Smoke Detectors: Ayer vs Cambridge
How do smoke detectors rules compare between Ayer, MA and Cambridge, MA?
Ayer and Cambridge have similar restriction levels.
Ayer, MA
Middlesex County
Smoke detectors in Middlesex County follow 527 CMR 1.00 and MGL c.148 s.26F. Homes sold or transferred require a Smoke Certificate inspection by the local fire department before closing.
View full Ayer rules →Cambridge, MA
Middlesex County
Cambridge enforces strict smoke and carbon monoxide detector rules under MGL c.148 s.26F and 527 CMR 1.00. Cambridge Fire Department inspects every home at point of sale and issues a required Certificate of Compliance.
View full Cambridge rules →Key Facts Comparison
| Fact | Ayer | Cambridge |
|---|---|---|
| State law | MGL c.148 s.26F | - |
| Code | 527 CMR 1.00 | - |
| Type required | Photoelectric with sealed 10-yr | - |
| Sale requirement | Smoke Certificate mandatory | - |
| CO detectors | Required within 10 ft of bedroom | - |
| Statute | - | MGL c.148 s.26F |
| Photoelectric alarms | - | Required within 20 feet of kitchens |
| CO alarms | - | Every level with fuel appliance |
| Point of sale inspection | - | Mandatory |
| Inspection contact | - | 617-349-4900 |
Highlighted rows indicate differences between cities.
Ayer FAQ
Do I need a smoke inspection to sell my house?
Yes. Massachusetts requires a Smoke and CO Certificate from the local fire department before closing on any residential property.
Can I use ionization smoke alarms?
New installations since 2017 must be photoelectric. Existing ionization units installed earlier are generally grandfathered until replacement.
Cambridge FAQ
Do I need to replace battery smoke alarms before selling my Cambridge home?
Yes, pre-1975 homes can keep battery alarms but they must be 10-year sealed models meeting current UL 217 standards.
How do I schedule a Cambridge smoke certificate inspection?
Call Cambridge Fire Prevention at 617-349-4900 at least 2 weeks before your closing date.
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