A Resident's Guide to Portland's Local Ordinances

Portland, Maine may not be the biggest city in the state, but it has its own set of local rules that residents need to follow. With 94 tracked ordinances across 15 categories, there is more here than you might expect.

Noise Ordinances

Vehicle Noise: 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.

Also covered: Barking Dogs (permissive), Industrial Noise (moderate), Quiet Hours (moderate). See the full noise ordinances guide for Portland for details.

Short-Term Rentals

Taxes & Fees: 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..

Also covered: Extended Home Share (moderate), Parking Rules (permissive), Host Presence Rule (moderate). See the full short-term rentals guide for Portland for details.

Parking Rules

Overnight Parking: 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.

Also covered: Abandoned Vehicles (moderate), Street Parking Limits (moderate), EV Charging (moderate). See the full parking rules guide for Portland for details.

Fire Regulations

Fireworks: 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.

Also covered: Fire Pit Rules (moderate), Propane Storage (moderate), Outdoor Burning (strict). See the full fire regulations guide for Portland for details.

Landscaping Rules

Tree Trimming: 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.

Also covered: Rainwater Harvesting (permissive), Weed Ordinances (moderate), Grass Height Limits (permissive). See the full landscaping rules guide for Portland for details.

Animal Ordinances

Exotic Pets: 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).

Also covered: Breed Restrictions (permissive), Beekeeping (permissive), Chickens & Livestock (moderate). See the full animal ordinances guide for Portland for details.

Fence Regulations

Pool Barriers: 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.

Also covered: Neighbor Fence Rules (moderate), Approved Materials (moderate), Height Limits (moderate). See the full fence regulations guide for Portland for details.

Swimming Pools & Spas

Fencing Requirements: 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.

Also covered: Safety Rules (moderate), Above-Ground Pools (moderate), Pool Permits (moderate). See the full swimming pools & spas guide for Portland for details.

Tree Protection

Heritage & Protected Trees: 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..

Also covered: Protected Tree Species (moderate), Parkway Planting (moderate), Tree Removal Permits (strict). See the full tree protection guide for Portland for details.

Accessory Structures

Tiny Homes: 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..

Also covered: ADU Rules (permissive), ADU Owner Occupancy (moderate), ADU Permits (moderate). See the full accessory structures guide for Portland for details.

Home Business

Cottage Food Operations: Maine requires a state license to operate a food establishment, including a home-based food business. Under 22 M.R.S.

Also covered: Customer Traffic Restrictions (moderate), Signage Rules (strict), Zoning Restrictions (moderate). See the full home business guide for Portland for details.

Drone Rules

Recreational Drones: Portland has not enacted a stand-alone recreational drone ordinance. Recreational flight in Portland is governed by federal law — 49 U.S.C.

Also covered: Park Drone Restrictions (moderate), Commercial Drones (moderate). See the full drone rules guide for Portland for details.

Trash & Recycling

Pickup Rules & Schedules: 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.

Also covered: Bulk Item Disposal (moderate), Illegal Dumping (strict), Yard Waste Collection (permissive). See the full trash & recycling guide for Portland for details.

Environmental Rules

Flood Zones: 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..

Also covered: Erosion Control (strict), Stormwater Management (strict), Grading & Drainage (moderate). See the full environmental rules guide for Portland for details.

Sign Regulations

Political Signs: 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.

Also covered: Holiday Displays (permissive), Garage Sale Signs (moderate). See the full sign regulations guide for Portland for details.

What to Do With This Information

Whether you are renting, buying, or renovating in Portland, knowing the local rules upfront saves headaches later. Dig into the individual ordinance pages linked above for the complete picture, including fines and exemptions.