A Resident's Guide to Cambridge's Local Ordinances

Cambridge is a mid-sized city in Middlesex County, Massachusetts, with about 118000 residents. Like most cities its size, it has a set of local rules that may differ significantly from neighboring municipalities. Here is an overview of 115 ordinances across 26 categories that affect daily life in Cambridge.

Home Business

Signage Rules: Cambridge bans most exterior home-business signage. A small professional nameplate under about 1 sq ft may be allowed, but illuminated or commercial-style signs are not permitted at residences..

Also covered: Home Occupation Permits (moderate), Home Daycare (moderate), Customer Traffic Restrictions (strict). See the full home business guide for Cambridge for details.

HOA Rules

Assessment & Dues: Massachusetts condos levy common expense assessments under MGL c.183A s.6, and unpaid fees create a super-lien that takes priority over most mortgages for up to 6 months of charges..

Also covered: Dispute Resolution (moderate), Architectural Review (moderate), CC&R Enforcement (moderate). See the full hoa rules guide for Cambridge for details.

Curfew Laws

Park Curfew: Cambridge parks and playgrounds generally close from 11 PM to sunrise (or dawn). Entering or remaining in a closed park is prohibited and subject to a warning or trespass citation..

Also covered: Juvenile Curfew (permissive). See the full curfew laws guide for Cambridge for details.

Noise Ordinances

Leaf Blower Rules: Cambridge banned gas-powered leaf blowers in 2024, requiring all landscapers and residents to switch to electric models, with time and decibel restrictions remaining in effect..

Also covered: Decibel Limits (strict), Construction Hours (strict), Amplified Music & Events (strict). See the full noise ordinances guide for Cambridge for details.

Drone Rules

Commercial Drones: Commercial drone operators in Cambridge must hold an FAA Part 107 Remote Pilot Certificate and obtain LAANC authorization for flights in the Boston Class B and Hanscom Class D airspace..

Also covered: Recreational Drones (moderate). See the full drone rules guide for Cambridge for details.

Parking Rules

Street Parking Limits: Cambridge operates a strict Resident Parking Permit system covering most city streets, requiring registered Cambridge residents to display a valid permit to park on marked resident-only streets..

Also covered: Overnight Parking (strict), Abandoned Vehicles (strict), Driveway Rules (strict). See the full parking rules guide for Cambridge for details.

Swimming Pools & Spas

Pool Permits: Cambridge requires building and plumbing permits for new pools through Inspectional Services, with zoning review for setbacks and compliance with the Massachusetts State Building Code..

Also covered: Above-Ground Pools (moderate), Hot Tub Rules (moderate), Fencing Requirements (strict). See the full swimming pools & spas guide for Cambridge for details.

Animal Ordinances

Exotic Pets: Cambridge prohibits exotic and wild animals as pets, following Massachusetts state law (321 CMR 9.01) which restricts dangerous species to licensed facilities..

Also covered: Chickens & Livestock (moderate), Wildlife Feeding (strict), Livestock (strict). See the full animal ordinances guide for Cambridge for details.

Short-Term Rentals

Parking Rules: Cambridge STR guests cannot obtain resident parking permits, and operators must disclose parking limitations and off-street availability as part of registration..

Also covered: Registration Rules (strict), Night Caps (strict), Occupancy Limits (moderate). See the full short-term rentals guide for Cambridge for details.

Fence Regulations

Pool Barriers: Cambridge pools deeper than 24 inches require a 48-inch barrier with self-closing, self-latching gates, per Massachusetts State Building Code 780 CMR Section 3109..

Also covered: Fence Requirements (moderate), Neighbor Fence Rules (moderate), Permit Requirements (moderate). See the full fence regulations guide for Cambridge for details.

Fire Regulations

Backyard Fires: Backyard fires are heavily restricted in Cambridge. Only small contained cooking fires in UL-listed devices are allowed, with no open ground fires and no brush or yard-waste burning anywhere..

Also covered: Wildfire Zones (permissive), Fire Pit Rules (strict), Smoke Detectors (strict). See the full fire regulations guide for Cambridge for details.

Landscaping Rules

Tree Removal & Heritage Trees: Cambridge requires a permit to remove any tree 6 inches DBH or larger under the 2021 Tree Protection Ordinance. Removals require replacement planting or payment into the Cambridge Tree Fund..

Also covered: Grass Height Limits (moderate), Water Restrictions (moderate), Native Plants (permissive). See the full landscaping rules guide for Cambridge for details.

Accessory Structures

Carport Rules: Carports in Cambridge are accessory structures subject to zoning setbacks and a building permit over 120 sq ft. They are uncommon on dense lots and historic districts often restrict open-wall designs..

Also covered: Tiny Homes (moderate), Garage Conversions (moderate), Shed Rules (moderate). See the full accessory structures guide for Cambridge for details.

Building Safety

Lead Paint: Massachusetts Lead Law under MGL c.111 s.197A requires de-leading of pre-1978 homes when a child under 6 resides there, and Cambridge CEDO aggressively enforces compliance..

Also covered: Pest Control (strict), Elevator Maintenance (strict), Scaffold & Sidewalk Shed (strict). See the full building safety guide for Cambridge for details.

Solar Energy

Panel Permits: Cambridge requires building and electrical permits for solar PV installations, with streamlined review for standard rooftop systems and additional review in historic districts..

Also covered: HOA Restrictions (permissive). See the full solar energy guide for Cambridge for details.

Trash & Recycling

Recycling Requirements: Cambridge mandates curbside single-stream recycling and weekly curbside composting. State waste bans prohibit disposal of cardboard, glass, metal, paper, textiles, mattresses, and food waste over one ton..

Also covered: Bin Placement Rules (moderate), Pickup Rules & Schedules (moderate), Bulk Item Disposal (moderate). See the full trash & recycling guide for Cambridge for details.

Property Maintenance

Vacant Lot Maintenance: Owners of vacant lots in Cambridge must keep them free of trash and overgrown vegetation, and unsecured vacant buildings must be registered with Inspectional Services and boarded to code..

Also covered: Trash Bin Storage (moderate), Snow & Sidewalk Clearing (strict), Garage Sale Rules (permissive). See the full property maintenance guide for Cambridge for details.

Cannabis Regulations

Home Cultivation: Under MGL c.94G (the Cannabis Control Act), Massachusetts adults 21 and older may grow up to 6 cannabis plants per person or 12 per household indoors out of public view. Cambridge follows state law..

Also covered: Dispensary Zoning (moderate). See the full cannabis regulations guide for Cambridge for details.

Sign Regulations

Political Signs: Political signs on private residential property in Cambridge are allowed with size and setback limits and no permit. Signs on public property, poles, or tree-belts are prohibited..

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

Rental Property Rules

Just Cause Eviction: Massachusetts prohibits rent control under MGL c.40P, but Cambridge tenants retain strong eviction protections under MGL c.186 and c.239. Landlords must follow statutory notice and court process..

Also covered: Rent Control (permissive), Rental Registration (moderate). See the full rental property rules guide for Cambridge for details.

Environmental Rules

Grading & Drainage: Cambridge requires grading and drainage plans with building permits to ensure runoff is managed on-site and does not adversely affect neighbors or the municipal storm drain system..

Also covered: Stormwater Management (strict), Erosion Control (strict), Flood Zones (strict). See the full environmental rules guide for Cambridge for details.

Food Trucks & Mobile Vendors

Food Truck Permits: Cambridge licenses mobile food vendors through the License Commission and Board of Health, with permits for truck operation, food safety, and designated location use..

Also covered: Vending Zones (strict). See the full food trucks & mobile vendors guide for Cambridge for details.

Building Setbacks & Zoning

Lot Coverage Limits: Cambridge regulates lot coverage and Floor Area Ratio (FAR) by zoning district, with Residence A limited to modest coverage and business districts allowing much higher intensity with inclusionary housing..

Also covered: Setback Rules (strict), Structure Height Limits (strict). See the full building setbacks & zoning guide for Cambridge for details.

Soliciting & Door-to-Door

No-Knock Registry: Cambridge allows residents to post No Soliciting or No Trespassing signs that legally bar commercial solicitors. Ignoring such signs can result in trespass enforcement under MGL c.266 s.120..

Also covered: Solicitor Permits (moderate). See the full soliciting & door-to-door guide for Cambridge for details.

Outdoor Lighting

Light Trespass: Cambridge prohibits outdoor lighting that creates nuisance glare or spills onto neighbor property in excess of zoning limits, with enforcement through Inspectional Services and nuisance law..

Also covered: Dark Sky Rules (moderate). See the full outdoor lighting guide for Cambridge for details.

Garage & Yard Sales

Garage Sale Permits: Cambridge does not require a permit for occasional residential yard sales. Sales must stay on private property, follow sign rules, and not create traffic or parking disruptions..

What to Do With This Information

Think of this as a map of the regulatory landscape in Cambridge. For any rule that directly affects a decision you are making, click through to the full ordinance page for penalty details and exceptions, and confirm with the city if the stakes are high.