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Portland City Code Sec. 5-18 prohibits owning, possessing, or harboring any dog whose 'loud, frequent, or habitual barking, howling, or yelping' disturbs the peace of any person. The first violation receives a warning; subsequent violations within six months of the warning carry a fine of $10 to $100. State law (7 M.R.S. Sec. 3950) forbids breed-specific bans but allows Portland's barking ordinance.
Portland Code § 17-19 bans scrap-metal loading/unloading from ships, vessels, or barges (and preparatory stacking) between 9:00 p.m. and 7:00 a.m. General industrial noise that disturbs the peace falls under the disorderly-conduct noise rule in § 17-17(c).
Portland Code § 17-20 bans operating any vehicle on public right-of-way with a straight-pipe exhaust, cutout, bypass, or other non-compliant muffler — including motorcycles. Rapid throttle revving is separately prohibited. § 17-21 limits car burglar alarms to 10 minutes per hour (20 if actually triggered).
Portland's Code does not set fixed numeric quiet hours but prohibits loud, unnecessary noise that disturbs neighboring inhabitants 24/7 under Sec. 17-17(c). Most enforcement happens at night, and the loading of scrap metal is specifically barred between 9:00 p.m. and 7:00 a.m. under Sec. 17-19. State disorderly-conduct law (17-A M.R.S. Sec. 501-A) backs up the local rule.
Within Portland R-zones, construction noise above 50 decibels is prohibited within 500 feet of any residence, hospital, or nursing home between 7:00 p.m. and 7:00 a.m. (Sep 1 - May 31). The summer evening cutoff extends to 8:00 p.m. (Jun 1 - Aug 31). No construction may start before 8:00 a.m. on Saturdays, Sundays, or legal holidays.
Portland, Maine has NOT adopted any leaf-blower-specific ordinance (no time-of-day, day-of-week, decibel, or gas-vs-electric restriction). Leaf-blower use is governed by the general disorderly-noise standard of Sec. 17-17(c) and the construction-hours rule of Sec. 17-18 if used in conjunction with landscaping work in R-zones.
Portland's only numeric decibel limit is in Sec. 17-18: construction activity in R-zones may not exceed 50 dB measured within 500 feet of any residential, hospital, or nursing-home building during prohibited nighttime/weekend hours. All other noise is governed by qualitative 'loud and unreasonable' standards.
Portland prohibits loudspeakers, amplifiers, radios, musical instruments, and phonographs operated 'in such manner as to disturb the peace, quiet and comfort of neighboring inhabitants' (Sec. 17-17(c)). Amplified sound on public rights-of-way is additionally controlled by Sec. 17-20, with escalating fines from $50 to $500. Entertainment-licensed venues are subject to Sound Oversight Committee review after multiple complaints.
Portland Code § 17-17(c) expressly prohibits playing any radio, instrument, or sound-producing device 'in such manner as to disturb the peace, quiet and comfort of neighboring inhabitants and passers-by.' The Police Department also tracks verified complaints against entertainment licensees and can refer licensees for sanction after a complaint threshold.
Portland has no enforceable local aircraft-noise ordinance — aircraft operations are preempted by the FAA. The Portland International Jetport (PWM) runs a voluntary 'Fly Quiet' program under an FAA-approved FAR Part 150 study and a Noise Advisory Committee.
Any letting of 30 days or more is a 'Long Term Rental' under Sec. 6-150.1 and falls outside Portland's STR rules (though it still requires long-term rental registration under Article VI). Owner-occupants may register up to five owner-occupied STR units (e.g., separate bedrooms) within their primary residence under Sec. 6-153(h)(f).
Portland's STR ordinance does not require a minimum number of off-street parking spaces specific to short-term rentals. The unit's underlying zoning parking ratio (and on-street parking rules under Chapter 28) governs.
Portland does not require a host to be physically present during a guest stay, but to qualify for the lower owner-occupied fee tier and avoid the non-owner-occupied cap, the registrant must occupy the rental unit as their primary residence as defined in Sec. 6-150.1.
Portland charges a tiered annual STR registration fee ranging from $100 (first owner-occupied or island unit) up to $4,000 (fifth non-owner-occupied mainland unit), in addition to the Maine 9% state lodging tax (Title 36 MRS § 1811) collected on every stay under 28 days.
Portland's STR registration runs on a calendar-year basis with renewal due by January 1 (Sec. 6-154(b)(c)). Beginning calendar year 2026, non-owner-occupied mainland STRs are capped at 1.5% of the prior year's registered long-term rental stock (about 285 units), down from the prior 400-unit cap, with a first-come, first-registered allocation and waitlist.
Portland's STR ordinance (Chapter 6, Article VI) does not impose a city-mandated minimum liability insurance amount for short-term rentals. Operators are responsible for carrying adequate coverage on their own, and Maine law does not preempt that gap.
Portland does not require every STR to be a primary residence, but Sec. 6-153(f) prohibits any STR in a single-family home unless it is owner-occupied, tenant-occupied (with owner permission), or on Peaks or an Outer Island. Non-owner-occupied STRs in detached single-family homes on the mainland are not allowed; in multi-unit buildings they are capped citywide at 1.5% of long-term housing stock.
Portland does not impose a per-unit annual night cap (e.g., 90 nights/year) on short-term rentals, but it does impose strict citywide caps: 1.5% of registered long-term rental units for non-owner-occupied mainland STRs (starting 2026), a 40-unit annual cap on Peaks Island Year-Round Non-Owner-Occupied STRs, and a five-year sunset for ADUs used as STRs.
Overnight guest occupancy in each Portland short-term rental is capped at two guests per bedroom, plus a maximum of two additional guests in shared/common space, under Portland Code §§ 6-150 et seq.
Every short-term rental (any letting of a rental unit, in whole or in part, for less than 30 days) must be registered annually with the Portland Permitting and Inspections Department under Portland City Code Chapter 6, Article VI. The registration number must appear on every advertisement and listing.
Portland's general noise ordinance (Chapter 17) and the state disorderly-conduct statute (17-A MRS § 501-A) apply to short-term rental guests with no STR-specific noise carve-out. STR operators are responsible for ensuring guests comply with quiet hours and decibel limits.
Portland Police and Parking Enforcement post vehicles that appear abandoned or unregistered on city streets. If the owner does not move or re-register the vehicle within 10 business days of posting, it is towed and processed under Maine's statewide abandoned-vehicle law (Title 29-A Sec. 1854).
On-street parking is governed by Portland Code of Ordinances Chapter 28 (Traffic and Motor Vehicles). Most metered downtown spaces have a 2-hour maximum, time-zone signs allow 15-minute to 2-hour free parking, and residential zones require an annual permit sticker to park beyond posted limits.
Portland's 2023 EV-Ready amendment to the Land Use Code (Chapter 14) requires all new multi-dwelling and mixed-use developments of 5+ units with on-site parking to install EV-ready conduit and electrical capacity. The city also approved a public right-of-way EV charging program in spring 2023 letting private operators install curbside chargers.
Portland Code Ch. 28 limits commercial truck loading-zone parking to 30 minutes (6 a.m.-6 p.m., Sec. 28-56(b)) and bars any motor vehicle over 20 feet long from residential streets November through March (Sec. 28-58(a)). On-street vehicle 'storage' over 10 consecutive days is prohibited under Sec. 28-57(d).
New residential or commercial driveways that cross a Portland sidewalk or curb require a curb-cut permit from the Portland Department of Public Works. The Eastern Promenade between Atlantic Street and North Street has a special 13-foot maximum curb-cut limit, and Portland is an Urban Compact municipality so the city — not MaineDOT — issues local-road driveway permits.
Portland has no year-round on-street overnight ban, but Chapter 28 authorizes the City Manager to declare a citywide overnight parking ban (10 p.m. to 6 a.m., or 1 a.m.-6 a.m. in the Old Port) during snowstorms. As of 2025 the fine for parking on the street during a declared snow ban is $130 (raised from $40) plus tow-and-storage charges.
Portland Code Chapter 28, Sec. 28-58(c) bars parking any boat, camper, trailer, recreational vehicle, similar vehicle, or snowmobile on any city street for more than 24 hours in any 7-calendar-day period. Storage of any vehicle in one street spot for 10+ consecutive days is also separately prohibited under Sec. 28-57(d).
Portland permits outdoor fireplaces and recreational fire appliances (UL-listed fire pits, chimineas) without a state burn permit, but they must be at least 15 feet from any structure, combustible material, or property line and be attended continuously by an adult age 18+ until fully extinguished.
Portland enforces NFPA 58 (the 2020 Maine LP Gas Code) through its adoption of NFPA 1 in Chapter 10 of the City Code. Residential propane cylinders must comply with NFPA 58 size limits (no more than two 100-lb DOT cylinders connected on the exterior of a one- or two-family home), with mandated separation distances from openings and ignition sources.
Even though consumer fireworks are legal statewide under 8 M.R.S. §221-A for persons 21+, Portland has opted out under home-rule authority and prohibits use, sale, possession with intent to use, and possession with intent to sell. Violators face fines of $200 to $600 per incident. Only sparklers and permitted public displays are allowed.
Open burning of any kind in Portland — brush, debris, ground campfires over 3 ft — requires a permit obtained from the Maine Forest Service or the Portland Fire Department. As of October 2023, permits are required for ALL outdoor fires larger than 3 ft x 3 ft, including recreational campfires. Burning is prohibited statewide during red-flag warnings.
Portland is not located within a designated Wildland-Urban Interface (WUI) zone under the Maine Forest Service program, and no local Portland ordinance creates wildfire-hazard severity zones. Wildfire risk is managed through statewide open-burning controls (12 M.R.S. §§9321-9325), the Maine Fire Service Class Day rating system, and Portland's adoption of NFPA 1 (Maine Fire Code).
Portland does not impose a California-style defensible-space requirement (the city is largely built-out urban and not in a designated wildland-urban interface). Brush, leaf, and yard-debris burning is allowed only with a state-issued burn permit obtained through the Maine Forest Service or the Portland Fire Department, under conditions set by 12 M.R.S. §§9321-9325 and 06-096 C.M.R. ch. 102.
Maine does not restrict private rainwater collection from rooftops, and Portland has no ordinance prohibiting rain barrels or cisterns. The city encourages rooftop disconnection and on-site stormwater management consistent with Portland's MS4 stormwater program. There is no permit required for a standard above-ground residential rain barrel.
Portland Code Chapter 29 protects 'Heritage Trees' on private property in historic districts (Sec. 29-1 through 29-15) and requires a city arborist permit before pruning, removing, or even disturbing roots within 20 feet of any public-place (street) tree (Sec. 29-18, 29-24). 'Tree topping' counts as removal.
Portland's Landcare Ordinance (Chapter 34) bans synthetic pesticides on virtually all public and private property, with the notable exception that prohibited pesticides may be used to control plants categorized as invasive by the Maine Department of Agriculture, Conservation and Forestry (Sec. 34-5(a)(4)(viii)). No numeric weed-height cap exists, but Heritage-Tree treatments for Elms and emerald-ash-borer control are also exempt.
Portland's Code of Ordinances does not impose a numeric grass-height cap (e.g., 8" or 10"). Overgrown lots are addressed through general nuisance authority under 30-A M.R.S. § 3001 (home-rule) and Chapter 14 (Land Use) buffer and shoreland rules, plus the Landcare Ordinance's encouragement of higher mowing heights for soil health.
Portland is served by the Portland Water District (PWD), which draws from Sebago Lake — one of about 50 U.S. surface-water supplies exempt from federal filtration. PWD has no current outdoor watering restrictions and no fixed weekly schedule; the only published advisories are boil/do-not-drink/do-not-use water-quality orders.
Portland's Landcare Ordinance (Chapter 34) explicitly references the Maine Department of Agriculture, Conservation and Forestry Natural Areas Program invasive-species list, and authorizes targeted pesticide use to remove invasive plants on city property (Sec. 34-5(a)(4)(viii)). The city partners with Wild Seed Project and Portland Pollinator Partnership on native pollinator gardens at Western Promenade and Bayside Trail.
Portland does not prohibit residential artificial turf. The Landcare Ordinance (Chapter 34, Sec. 34-5(a)(4)(iii)) specifically carves out 'Hadlock Field applications' — the Sea Dogs' synthetic-turf stadium — from the pesticide and fertilizer prohibitions. Residential artificial turf is treated as an impervious-like surface under Chapter 14 (Land Use) lot-coverage rules.
Maine encourages residential backyard composting and exempts small-scale home composting from solid waste licensing. The Department of Environmental Protection rules apply statewide and supersede any local ban on home composting of food scraps and yard waste.
Maine's Forest Practices Act regulates timber harvesting on all forestland statewide and requires harvest notifications to the Bureau of Forestry. Shoreland tree removal rules also apply universally near protected waters under separate statewide standards.
Portland does not — and legally cannot — restrict or ban dogs based on breed. Maine Revised Statutes 7 § 3950 expressly prohibits municipalities from adopting any breed-specific ordinance, law, or regulation. Dangerous-dog rules apply equally to all breeds.
Portland Code Chapter 5, Article VI (Sec. 5-506 to 5-509), effective October 18, 2017, prohibits the display of wild and exotic animals in traveling animal acts (circuses, fairs, exhibitions). Personal exotic-pet ownership is governed by Maine state wildlife in captivity rules administered by Maine DIFW.
Portland has no specific beekeeping ordinance in Chapter 5 — beekeeping is generally allowed citywide. However, every Maine beekeeper must register their hives annually with the state Department of Agriculture, Conservation and Forestry by June 15 under 7 MRS §2701, and apiaries are subject to municipal nuisance enforcement.
Portland allows up to 6 female chickens per lot for non-commercial use under Chapter 5, Article IV (Sec. 5-400 et seq.). Roosters are banned, the chicken permit was repealed in 2017, and henhouses must sit at least 10 feet from any residential structure on adjacent lots.
Portland has no city ordinance that sets a specific limit on the number of pets a person may keep or that uses the term 'animal hoarding.' Hoarding cases are prosecuted under Maine's animal cruelty statute (17 MRS §1031 and 7 MRS §4011) when animals are deprived of necessary sustenance, medical attention, shelter, or humanely clean conditions.
Maine state law (7 MRS § 3911) makes it unlawful for any dog, licensed or unlicensed, to be at large except when hunting. Portland enforces this through its Animal Control program and applies additional leash rules in city parks and on public ways.
Under Portland Code Sec. 5-110 (Article III), it is illegal to intentionally feed wildlife — including pigeons and squirrels — on public ways or on city-owned/controlled property within the Portland Downtown District. Lincoln Park is exempted. A verbal or written warning is required before a citation can be issued.
Maine retains a centuries-old statutory framework for fence disputes between neighbors: Title 30-A Chapter 133 governs partition (shared) fences and assigns municipal 'fence viewers' to arbitrate disputes. Title 17 § 2801 governs spite fences as private nuisance.
Portland restricts barbed wire fencing along public streets and ways; barbed wire requires a revocable permit from the building inspector and is typically only allowed atop a fence at least 4 ft high with the barbed wire at least 6 inches above the top.
Maine state law (22 MRS § 1632) requires every swimming pool to be enclosed by a fence with gates or doors capable of being securely fastened when not in use. Portable above-ground pools with sidewalls of at least 24 inches are exempt. Portland enforces this baseline plus IRC pool-barrier standards under MUBEC.
Portland regulates fence height through Chapter 14 (Land Use Code) zoning standards, with stricter limits in front-yard and corner-lot sight-triangle areas than in side/rear yards. State law (17 MRS § 2801) declares any fence over 6 feet maliciously erected to annoy a neighbor a private nuisance.
A building permit is required in Portland for retaining walls over 4 feet measured from the bottom of the footing to the top of the wall, walls supporting a surcharge load (driveways, structures, slopes), and any wall within the shoreland zone. Lower freestanding garden walls are typically exempt.
Portland follows the 2015 IRC anti-entrapment and barrier rules adopted via MUBEC for residential pools, while public/semi-public pools (apartment complexes, hotels, clubs) must additionally be licensed and inspected by the Maine DHHS Health Inspection Program under 22 M.R.S. ch. 266. Federal Virginia Graeme Baker Pool & Spa Safety Act drain-cover standards apply to public pools.
Every outdoor swimming pool in Portland must be enclosed by a barrier at least 48 inches high under the 2015 IRC (adopted via MUBEC), with no openings allowing a 4-inch sphere to pass and no more than a 2-inch ground clearance. State law 22 M.R.S. §1632 separately mandates a fence around every pool, with gates capable of being securely fastened when not in use.
Above-ground pools in Portland generally require a building permit and must meet the 48-inch barrier rules under the 2015 IRC. State law 22 M.R.S. §1632 exempts portable above-ground pools with sidewalls at least 24 inches high from the separate fence requirement, but the IRC barrier provisions still govern any pool capable of holding 24+ inches of water.
Portland requires a building permit to install any in-ground swimming pool and most above-ground pools, with review under the Maine Uniform Building and Energy Code (MUBEC). A separate plumbing permit is required if the pool ties into the water supply and an electrical permit is required for heaters, pumps, and lighting.
Portland does not require a separate building permit for a residential hot tub or spa, but the unit must be equipped with a safety cover meeting ASTM F1346. A plumbing permit is required for any potable-water connection and an electrical permit for heaters, pumps, and lighting. Hot tubs on raised decks may trigger structural review.
Portland permits up to two accessory dwelling units (ADUs) per qualifying residential lot under Land Use Code Chapter 14 §6.6.2 (the December 2024 ReCode), implementing the statewide ADU mandate in 30-A MRS §4364-B.
Under Land Use Code §6.6.2, the owner of a Portland lot must occupy at least one of the dwelling units at the time an ADU is initially constructed or legally created, with a Peaks Island legally-nonconforming-lot exception.
Any ADU — new construction, garage/basement/attic conversion, or detached accessory building — requires a building permit issued by Portland's Permitting and Inspections Department, plus separate electrical, plumbing, and mechanical trade permits.
Converting a garage to living space requires a building permit and zoning review; garages may also be converted into an Accessory Dwelling Unit (ADU), with detached ADUs above a garage allowed up to 25 ft in height under the 2024 ReCode Land Use Code.
New ADUs in Portland are exempt from the city's non-owner-occupied short-term rental registration cap for the first 5 years after construction, after which they revert to the normal STR waitlist under the Chapter 6 STR ordinance.
Portland allows fixed-foundation tiny homes that comply with MUBEC as either a primary dwelling or an ADU (subject to a 190 sq ft state minimum and Portland's ADU rules); tiny houses on wheels are treated as recreational vehicles and cannot be used as permanent dwellings on residential lots.
Carports are regulated as detached covered accessory structures under the Portland Land Use Code: a building permit is required for any roofed structure regardless of size, and the carport must meet residential setbacks (3-5 ft side/rear under ReCode) and lot-coverage limits.
Portland does not impose a separate impact or development fee on ADUs; only the standard building permit fee under the Permitting and Inspections fee schedule (typically valued as a percentage of construction cost) plus connection charges for water and sewer apply.
Sheds 200 sq ft or smaller are exempt from a MUBEC building permit but still require zoning/land-use review for setbacks and lot coverage; sheds over 200 sq ft require a full building permit from the Permitting and Inspections Department.
Portland Code § 14-410 limits the volume of customer and client visits to a home occupation so the use stays accessory to the residence, and any parking demand the business generates must be met off the street and outside any required front yard.
Portland tightly limits signage for home occupations. Under Code § 14-410, a home occupation must remain visually subordinate to the residential use, and any sign is subject to the small, low-impact size and lighting standards in Chapter 14's sign regulations.
Portland regulates home-based businesses as 'home occupations' under Chapter 14 (Land Use) § 14-410. Home occupations are an accessory use to a dwelling and are permitted in residential zones subject to limits that keep the business clearly secondary to the residential character of the home.
Maine requires a state license to operate a food establishment, including a home-based food business. Under 22 M.R.S. § 2167, a person may not operate a food establishment without a license from the Department of Agriculture, Conservation and Forestry. A narrow exception in § 2174 lets licensed sellers display unpackaged baked goods at farmers' markets.
Family child care providers operating in their Portland residence must be licensed by Maine DHHS under 22 M.R.S. § 8301-A when caring for 4 or more unrelated children. Under § 14-410, the Portland zoning code treats a licensed family child care home as a permitted home-occupation accessory use to a single-family dwelling.
Portland's Heritage Tree definition automatically covers any tree on the Maine Big Tree List and any native rare or threatened species, regardless of diameter — and statewide Shoreland Zoning further restricts cutting within 250 ft of protected waters.
Under Portland Code Ch. 29 Sec. 29-18, planting any tree in a street, park, or public place — including the parkway strip between curb and sidewalk — requires a permit from the City Arborist, and species must be selected from the City's recommended/approved street tree list.
Portland Code of Ordinances Chapter 29 (Vegetation) requires a permit from the City Arborist before any person may plant, prune, remove, cut, or otherwise disturb any tree growing on a street, park, or other public place — including the strip between the curb and sidewalk.
Portland Code Ch. 29 requires replacement trees when a permitted street tree or Heritage Tree is removed, and allows a fee-in-lieu payment to the City's Tree Trust when on-site replacement is impractical.
Adopted as Order 26-20/21 effective August 13, 2020, Portland's Heritage Tree Ordinance (Ch. 29) requires a city permit before any healthy Heritage Tree on private property within a designated historic district may be removed or extensively pruned.
Portland has not enacted a stand-alone recreational drone ordinance. Recreational flight in Portland is governed by federal law — 49 U.S.C. § 44809 (the Exception for Limited Recreational Operations) and the FAA's TRUST safety test — plus the Maine state drone framework at 25 M.R.S. § 4501, which regulates law-enforcement drones but does not preempt municipal park or nuisance rules.
Portland Code Chapter 16 (Parks and Recreation) governs conduct in city parks but does not list a dedicated drone prohibition. Drone flights from or above parks must comply with FAA Part 107 / 49 U.S.C. § 44809 airspace rules, and operators remain subject to general park rules on disturbance, hazardous conduct, and nuisance — plus FAA Class C airspace restrictions over the Eastern Promenade, Back Cove, and most peninsula parks.
Portland has no separate commercial-drone permit. All commercial small UAS flights in the city (real estate, photography, inspection, surveying, delivery) are regulated by 14 CFR Part 107. Operators need a Remote Pilot Certificate, registered aircraft, and LAANC authorization for the controlled airspace surrounding Portland International Jetport.
Items weighing 30 lbs or less that don't fit in a purple PAYT bag are collected free (limit 10 per dwelling per year). Items over 30 lbs require a paid bulky-waste permit (currently $40 per item) obtained through the City's Citizen Self Service portal before set-out.
Portland operates a Pay-As-You-Throw (PAYT) system: trash is only collected if placed in official purple City of Portland bags, and recycling is collected weekly on the same scheduled day as trash. Carts must be curbside by 6:30 a.m. on collection day and returned by 8:00 p.m.
Dumping trash, construction debris, or yard waste on public ways, vacant lots, or private property without consent is prohibited under Maine's littering statute (17 M.R.S. §§ 2263-A, 2264-A): $100-$500 for under 15 lbs, $500+ (with treble damages and public-service hours) for over 15 lbs, and Title 38 § 349 penalties for commercial dumping over 500 lbs.
Portland offers seasonal curbside yard-waste collection in spring and fall on published dates. Year-round, residents may drop off leaves, grass clippings, brush, and garden waste free at Riverside Recycling (910 Riverside St). The City also operates a free community food-scrap composting program with multiple drop-off locations.
Trash bags and the City-provided blue recycling bin must be placed at the curb (not in the travel lane or blocking sidewalks) by 6:30 a.m. on the scheduled collection day, and removed by 8:00 p.m. the same day.
Portland uses single-stream recycling processed by ecomaine: paper, cardboard, plastic bottles/jugs/tubs, and metal cans go in the City-provided blue bin. Glass is collected separately in a glass-only bin. Plastic bags, food, and tanglers are not accepted.
Any development in a FEMA Special Flood Hazard Area (V, VE, A, AE, AO, AH zone) inside Portland requires a Flood Hazard Development Permit issued under Subsection 12.4.1 of the Floodplain Management Ordinance (Chapter 14, Article 12 of the Land Use Code) — including new buildings, substantial improvements, fill, grading, manufactured homes, piers and seawalls.
Any construction activity in Portland that disturbs 10,000 square feet or more — or that discharges sediment to the public right-of-way — must prepare an Erosion and Sedimentation Control Plan and obtain written approval before ground disturbance begins. Sites of 1 acre or more require a third-party qualified inspector with weekly reports.
Portland is a Regulated Small MS4 under the EPA/Maine DEP NPDES program. Chapter 32 of the City Code prohibits non-stormwater (illicit) discharges to the city storm drain system and requires every qualifying development to file, implement and annually inspect a Post-Construction Stormwater Management Plan with city-approved Best Management Practices.
Portland regulates grading and drainage through three layers: (1) Chapter 32 (Stormwater & Erosion Control) for any disturbance of 10,000 sq ft or more; (2) Section V of the Portland Technical Manual for post-construction drainage design; and (3) the building permit and Site Plan review under Chapter 14 (Land Use Code), which require certified grading plans and lowest-floor elevations.
Portland's tidal shoreline, Fore River, Back Cove and Presumpscot River frontage is covered by a mandatory Shoreland Overlay Zone (Portland, ME Land Use Code, Chapter 14, Art. 11) implementing 38 M.R.S. § 435 et seq. The overlay extends 250 feet inland of the high-water line / coastal wetland edge, imposes a 75-foot structural setback in most cases and requires an Other Land Use Permit for any pier, seawall, vegetation removal or land alteration.
Portland defers to Maine's statewide categorical-sign law (23 M.R.S. §1913-A) for political signs in the public right-of-way: max 4 ft × 8 ft, must carry the placer's name/address and erection date, no more than 6 weeks per half-year, and at least 30 ft between signs bearing the same message. On private property, Maine's on-premises-sign statute (23 M.R.S. §1914) and Portland's Land Use Code (Chapter 14) control.
Portland's Land Use Code regulates "signs" as defined in Chapter 14; private, non-commercial holiday lights, wreaths, inflatables, and seasonal yard decorations are not signs and do not require a permit. State temporary-sign rules (23 M.R.S. §1913-A) and on-premises rules (23 M.R.S. §1914) supply the outer limits; Portland's general nuisance and historic-district rules can still reach displays that block sightlines or violate the Munjoy Hill / Old Port historic standards.
Portland does not require a permit to hold a residential yard sale or to post yard-sale signs on private property. Signs in the public right-of-way fall under Maine's categorical-sign law (23 M.R.S. §1913-A): max 4 ft × 8 ft, must show the placer's name/address and date, and must come down promptly. Signs may not be tacked to utility poles, traffic devices, trees, or street furniture.
In Maine's shoreland zone, no more than 20 percent of a lot may be covered by structures and other non-vegetated surfaces. This statewide cap applies to every municipality through DEP shoreland guidelines.
Maine's Mandatory Shoreland Zoning Act sets minimum building setbacks from great ponds, rivers, streams, and coastal waters. Every municipality must adopt these standards, and DEP enforces if local rules fall short.
Within Maine's mandatory shoreland zone, principal and accessory structures may not exceed 35 feet in height. The cap applies in every municipality and overrides any local ordinance permitting taller buildings near water.
Maine state law uniformly requires municipal opt-in before any adult-use cannabis establishment can operate, while medical dispensaries and caregivers operate under statewide licensing with limited local authority over location, hours, and signage.
Maine state law universally allows adults 21 and over to grow up to three mature cannabis plants for personal use and qualifying medical patients to grow more, with municipalities barred from prohibiting state-permitted personal cultivation.
Maine's minimum wage statute at 26 MRS section 664 sets a state floor while expressly permitting municipalities to enact higher local minimum wages above the state level.
Maine's Earned Paid Leave law at 26 MRS section 637 grants employees one hour of paid leave per 40 hours worked, capped at 40 hours per year for covered employers.
Maine has no statewide predictive scheduling mandate, leaving wage payment timing under 26 MRS section 621-A and allowing municipalities to enact local fair scheduling.
Maine is a permitless carry state for residents 21 and older, while still issuing concealed handgun permits recognized for reciprocity and certain restricted areas.
Maine preempts local firearms regulation under 25 MRS section 2011, with limited municipal authority allowed for discharge ordinances and certain public buildings.
Maine generally permits open carry of firearms by lawful possessors, governed primarily by state law with municipalities preempted from imposing additional carry restrictions.
Maine permits handgun carry in motor vehicles by lawful possessors under 25 MRS section 2001-A, with permitless concealed carry available to qualifying residents 21 and older.
Maine has no statewide E-Verify mandate for private employers, leaving participation in the federal employment verification system voluntary except for federal contractors.
Maine has no statewide sanctuary preemption; LD 1259 attempted to bar local sanctuary policies but was not enacted, leaving immigration cooperation decisions to municipalities.
Maine's Right to Farm and farmland protection statutes at 7 MRS section 152 and Title 30-A limit local zoning that would impede agricultural operations meeting state standards.
Maine's Right to Farm Law at 7 MRS section 152 shields established farm operations from nuisance suits and restrictive local ordinances when generally accepted practices are followed.
Maine's single-use plastic carryout bag ban under 38 MRS § 1611 took effect July 1, 2021 after a COVID-era delay. Retail establishments may not provide single-use plastic carryout bags; recycled paper or reusable bags carry a minimum 5-cent fee. The State expressly occupies the whole field — local bag ordinances enacted after January 15, 2021 are void. (The ban has NOT been repealed; both the Maine DEP and Maine Legislature confirm it remains current law.)
Maine's LD 1532 enacted a statewide ban on single-use plastic carryout bags, codified in 38 MRS section 1611, with retailer fee requirements for paper alternatives.
Maine prohibits the sale and distribution of disposable polystyrene foam food service containers under 38 MRS section 1612, the first such statewide ban in the United States.
Maine restricts plastic straw distribution under 38 MRS section 1614, requiring full-service restaurants to provide single-use plastic straws only upon customer request.
Maine prohibits the sale of tobacco and electronic smoking devices to anyone under age 21 under 22 MRS section 1551-A and related Tobacco 21 statutes.
Maine has no statewide flavor ban, but several municipalities have adopted local restrictions on flavored tobacco and vape sales using their public health authority.
Maine regulates electronic smoking device retailers under 22 MRS section 1551-A and Title 22 chapter 263, requiring licensure, ID checks, and compliance with sale restrictions.