Night Caps: Ayer vs Cambridge
How do night caps rules compare between Ayer, MA and Cambridge, MA?
Ayer and Cambridge have similar restriction levels.
Ayer, MA
Middlesex County
Several Middlesex County cities cap annual STR rental nights for non-owner-occupied units, with Cambridge limiting non-primary rentals and Somerville permitting owner-adjacent STRs under residency rules.
View full Ayer rules →Cambridge, MA
Middlesex County
Cambridge does not impose a specific annual night cap but restricts non-owner-occupied operations entirely and requires the owner to maintain primary residence at least 9 months per year.
View full Cambridge rules →Key Facts Comparison
| Fact | Ayer | Cambridge |
|---|---|---|
| Cambridge | Primary residence required | - |
| Somerville | Owner-occupancy rules | - |
| Typical suburban cap | 90 to 180 nights | - |
| Investor STRs | Banned in Cambridge | - |
| Enforcement | Annual registration | - |
| Annual Night Cap | - | None specific |
| Primary Residence | - | 9 months per year |
| Non-Owner-Occupied | - | Prohibited |
| Owner-Occupied 2-3 Family | - | Additional units allowed |
| Revocation Trigger | - | Loss of primary residency |
Highlighted rows indicate differences between cities.
Ayer FAQ
Is there a night cap on STRs in Cambridge?
Cambridge does not use a night cap but instead requires primary residence operation. Non-owner-occupied investor STRs are prohibited in Cambridge.
Can I rent my vacation home year-round?
In most Middlesex towns with STR ordinances, non-primary residence STRs are either capped at 90 to 180 nights per year or prohibited entirely. Check your local bylaw.
Cambridge FAQ
Is there a 90-night limit?
No, Cambridge does not cap nights but requires 9 months of owner occupancy annually.
Can I rent year-round?
Only if you maintain primary residence; investor-only STRs are not permitted in Cambridge.
Compare other topics
See how Ayer and Cambridge compare on other ordinance categories.
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