Building Permits in Trenton, NJ

Check permit requirements for home improvement projects in Trenton. Select a project type below to see local requirements, estimated fees, and how to apply.

54 Permit Rules

15 Project Types

$45 – $4,500 Permit Fee Range

IRC 2018 Building Code

Key Exemptions in Trenton

These projects typically don't require a building permit in Trenton:

Cosmetic bathroom renovations (paint, tile, fixtures in same location) do not require a permit in Trenton, NJ.

Freestanding decks not exceeding 30 inches above grade do not require a building permit in Trenton, NJ.

Replacing a light fixture or outlet in-kind does not require an electrical permit in Trenton, NJ.

Fences 6 feet or under do not require a building permit in Trenton, NJ.

Small detached garage/carport structures (100 sq ft or less) may be treated as exempt accessory structures in Trenton, NJ.

See all rules by selecting a project type below, or use our free lookup tool for a personalized answer.

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Swimming Pool / Hot Tub

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Trenton Building Department

NameDivision of Inspections

Phone(609) 989-3528

WebsiteVisit website

Address319 E State St, Trenton, NJ 08608

HoursMon-Fri 8:30am-4:30pm

Nearby Cities in New Jersey

Newark Jersey City Paterson Hamilton Township Camden Princeton

Permit Guides

Read our in-depth guides for common home improvement projects:

Deck Guide Fence Guide Shed Guide Roof Guide Bathroom Guide Kitchen Guide Pool Guide Electrical Guide Plumbing Guide HVAC Guide Garage Guide Addition Guide Basement Guide

Disclaimer: Always confirm with your local building department before starting your project. PermitMint provides general guidance, not legal advice.