If you sell a one- or two-family home in New Jersey, you generally need a compliance certificate showing working smoke alarms and carbon monoxide alarms. State law bars an owner from selling, leasing or allowing residential occupancy without one. Your town issues it, usually through the fire prevention bureau or the construction office. One thing has changed: a portable fire extinguisher is no longer part of the requirement.
The fire extinguisher is no longer required
You may still see the old name, "smoke detector, carbon monoxide alarm and portable fire extinguisher certificate." State law P.L. 2025, c.19, approved February 3, 2025, eliminated the extinguisher requirement for these homes. It also replaced the old split penalty with a single fine of up to $500 for violating the residential requirements.
Some town forms and real estate websites have not caught up. If your town still asks for an extinguisher, ask the fire bureau which version of the rule they are applying.
A new label for homes with a secondary power source
The same law added something that touches the electrical system. A home that contains a secondary power source must have a label warning of the danger of secondary power sources. The label goes within 18 inches of the main electrical panel and the electrical meter.
The law does not spell out the exact label wording, and it does not define "secondary power source." Ask your fire bureau what it expects to see, and whether it applies to your home.
Who issues the certificate
The local enforcing agency does, or the state Division of Fire Safety where no local agency applies. If your town requires a certificate of occupancy or inspection on resale, that office will not issue it until the alarms are confirmed installed. If your town does not require one, you still need a compliance certificate from the enforcing agency.
The fee is set by your local governing body, so it differs from town to town. Lead times differ too. Call your town's fire prevention bureau early, ideally before you list, and ask about both.
What the inspector checks
The state law and the fire code (N.J.A.C. 5:70-4.19) set out the basics:
- Smoke alarms on each level of the home and outside each separate sleeping area, near the ceiling.
- Carbon monoxide alarms in the immediate vicinity of the sleeping areas. They may be battery, plug-in or hardwired, and they must be listed and labeled to UL 2034. The code exempts units in buildings with no fuel-burning device and no attached garage.
- Listed devices. Alarms must be tested and listed by a recognized product certification agency. Battery-powered smoke alarms installed under the code must be 10-year sealed units listed to UL 217.
The code also says smoke alarms do not have to be interconnected. Your town may apply its own checklist, so confirm before you assume.
What commonly fails
These are the problems we would expect on a failed inspection. Your inspector may flag others.
- A missing alarm. A basement, an attic bedroom or a hallway outside a sleeping area has none.
- No carbon monoxide alarm near the bedrooms.
- Dead or removed alarms. A chirping unit gets pulled down and never replaced.
- Unlisted devices. The alarm lacks the required listing.
- A hardwired alarm swapped for a battery one. Under the fire code, AC-powered smoke alarms installed as part of the original construction cannot be replaced with battery-powered alarms. AC-powered alarms are accepted as compliant.
Where an electrician fits in
Battery alarms are a hardware-store fix. Hardwired alarms are different. They run on the home's wiring, and many have a backup battery. If one is dead, chirping or missing from a spot where the house was built with one, the repair involves the wiring, not just the alarm.
A licensed electrician can test the circuit, replace the alarm with a compatible hardwired unit, and fix the wiring if there is a fault. That matters when you are racing a closing date. If you already have a violation notice, see our page on smoke alarm violations.
Gareffa Electric is a family-owned electrical contractor, NJ Electrical Contractor License #18578, with $2M liability insurance. We do not issue the certificate. Your town does. We handle the electrical side so the alarms and wiring are ready for the inspector.
A simple plan before you list
- Call the fire prevention bureau and ask for the current checklist, fee and scheduling time.
- Walk the house with the checklist. Count alarms by level and by sleeping area.
- Replace any dead or unlisted alarms, and add carbon monoxide alarms where needed.
- If any alarm is hardwired and not working, have an electrician look at it before the inspection, not after.
- Book the inspection with time to spare in case of a re-inspection.
If your closing is close, a same-day call may help. Our scheduled service calls start at $150 flat, and a same-day call is $350. Both include a diagnostic plus the first hour of work.
Frequently asked questions
Do I still need a fire extinguisher to sell my New Jersey home?
Not under state law. P.L. 2025, c.19 eliminated the extinguisher requirement for these homes in February 2025. Check with your town if its paperwork still lists one.
Who do I call to get the certificate?
Your town's fire prevention bureau or construction office, depending on how your town handles it. Where no local agency applies, the state Division of Fire Safety is the enforcing agency.
My hardwired smoke alarm does not work. Can I swap in a battery alarm?
If it was installed as part of the original construction, the fire code does not allow a battery-powered replacement. Have it repaired or replaced with a hardwired unit.
Need the alarms ready for inspection?
If you want a licensed electrician to check hardwired alarms before the inspector arrives, book a scheduled service call online or call (973) 662-4333. We are open Monday to Saturday, 7 AM to 6 PM.
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