Denville Township

Morris County

Text Client checklist

Certificate of Occupancy

Not required

Phone: (973) 625-8300 ext. 251

Official page

Smoke and CO alarm certificate

Required

Requirements

Smoke alarm on each level including basements (not attic or crawl space) and outside each separate sleeping area within 10 feet of bedrooms
10-year sealed battery smoke alarms (ANSI/UL 217) where battery alarms are used; AC alarms from construction or rehabilitation cannot be replaced with battery alarms, and AC alarms more than 10 years old must be replaced before the inspection
CO alarm in the immediate vicinity of sleeping areas (UL 2034, NFPA 720) unless the home has no fuel-burning device or attached garage
Low-voltage alarm systems: monitoring contact, account and password, plus certification from an alarm technician
Portable fire extinguisher 2A-10B:C, no more than 10 pounds, serviced and tagged within 12 months or with a recent purchase receipt; owner's manual left for the new occupant (form still lists it)
Secondary power source label ("Caution: Multiple Sources Of Power") within 18 inches of the main panel and the meter, if the home has a generator, solar panels or battery storage

Denville Township Fire Prevention Bureau

Fees

Smoke/CO resale inspection, more than 10 business days before change of occupant	$35
4 to 10 business days before change of occupant	$70
Fewer than 4 business days	$125
Township fee schedule: more than 10 days' notice	$35.00
Township fee schedule: 4 to 10 days' notice	$70.00
Township fee schedule: less than 4 days' notice	$125.00

Timing

Fee depends on business days between the request and the change of occupant (more than 10 for the lowest fee). Office hours Wednesday to Friday 8:00 am to 4:00 pm. Inspections are good for 6 months.

Phone

(973) 625-8300 ext. 257

Application Official page

Last checked October 4, 2026

Sources

Other towns in Morris County

Look up any New Jersey property on Watchdog

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