Not legal advice. This is a free reference compiled from official government sources. Laws change and local details matter. Confirm every deadline with the official source or a licensed attorney before you rely on it.
Last verified: · Confidence: low
Smoke and CO alarms
Requirements to install, maintain or certify smoke and carbon monoxide alarms, including at tenant turnover.
| Where | Rule | Deadline | Status |
|---|---|---|---|
| New York | Carbon monoxide alarms within 15 feet of sleeping rooms | Ongoing requirement with no fixed date | verified, medium confidence, checked 2026-10-20 |
| Pennsylvania | CO alarms in rental multifamily dwellings (3+ households) with fossil-fuel appliances, fireplace or attached garage | Before each new occupancy: replace missing/inoperable alarms and ensure batteries work | verified, high confidence, checked 2026-10-20 |
| New York | Smoke detectors within 10 feet of sleeping rooms (multiple dwellings) | Ongoing requirement with no fixed date | verified, medium confidence, checked 2026-10-20 |
| New Jersey | Smoke/CO alarm compliance certificate before each new tenancy (1-2 family) | Before the unit is leased / before a change of occupancy (new tenant) | verified, low confidence, checked 2026-10-20 |
| New York City, NY | Smoke/CO/natural gas detectors, tenant notice and posting | Ongoing requirement with no fixed date | verified, medium confidence, checked 2026-10-20 |
Other topics: Security deposit return · Deposit receipts and bank notices · Security deposit interest · Rental registration and licensing · Rental inspections and certificates · Lead paint disclosure and certifications · Required tenant notices · Rent increase notice · Non-renewal and termination notice · Notice before entry · Income tax filing · Estimated tax payments · Information returns (1099s).