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Building Safety in Trenton, NJ (2026)

9 verified building safety rules for Trenton, New Jersey, sourced directly from the municipal code and official government pages.

Verified from official government sources

Lead Paint

Trenton requires periodic lead-based paint inspections for single-family, two-family and multiple rental dwellings under Code § 132-131, performed by the Municipal Inspector or a licensed lead evaluation contractor. Because Trenton exceeds the state's elevated blood-lead threshold, inspections use the dust-wipe method, and owners pay $350 to $600 per unit under § 132-135.

Trenton Rental Lead-Paint Inspection Program

Some Restrictions

Trenton Code § 132-131, § 132-142

The Municipal Inspector shall be authorized and empowered to conduct periodic lead-based paint inspections for all applicable multiple dwelling units offered for rent to determine the presence of lead-based paint, in accordance with N.J.S.A. 52:27D-437.6 and N.J.A.C. 5:28A-1.1 et seq. ... The owner of the dwelling shall first be given a period of 30 calendar days to cure any violation by conduc...

Elevator Maintenance

Trenton's housing code requires owners of multi-dwelling buildings to keep every elevator serving occupied units on the third floor or higher in working order. An owner cannot let an elevator sit broken without notifying the Building Inspector and pursuing a diligent repair effort.

Trenton Elevator Maintenance Duty for Owners

Some Restrictions

Trenton Code § 132-69

§ 132-69. Elevators. The owner of every multi-dwelling facility shall maintain in operating order all elevators providing access to occupied units on the third level or higher. No owner shall permit such an elevator to remain out of service without notifying the Building Inspector of the fact and without pursuing a diligent repair effort.

Childcare Center Rules

Trenton doesn't set its own child-care capacity or space rules: zoning code § 315-8.4.F simply requires every day care center or day care home to meet whatever indoor/outdoor space and child-to-adult ratios New Jersey already mandates, post the operator's state license publicly, and give a day care center a dedicated pickup/drop-off area that can't block a drive aisle or the right-of-way.

Trenton Day Care Center Zoning Standards

Some Restrictions

Trenton Code § 315-8.4.F

F. Day Care Center and Day Care Home. 1. The day care center or day care home facilities must comply with all applicable state regulations, such as required indoor and outdoor space. 2. The maximum number of children or adults shall be in accordance with state regulations and guidelines. 3. The operator's license of the day care center or day care home must be displayed publicly. 4. A day care ...

Door Locking Hardware

Trenton bans draw bolts, slide bolts, barrel bolts, surface bolts, flush bolts, hooks, hasps, padlocks and key-operated deadbolts on the egress side of any exit door. A narrow exception lets one- and two-family dwelling units keep draw bolts, hooks or key-operated deadbolts if the key cannot be removed while the door is locked from the egress side.

Trenton Ban on Prohibited Egress Locks

Significant Restrictions

Trenton Code § 97-9M

M. Prohibited door hardware. Draw bolts, slide bolts, and barrel bolts, surface bolts, flush bolts, hooks, hasps and padlocks, and key-operated deadbolts from the egress side are prohibited on all egress doors. All such locking devices shall be removed and the egress door hardware made to conform to approved egress hardware. Exception: Draw bolts, hooks and key-operated deadbolts are permitted ...

Carbon Monoxide Detectors

Trenton requires carbon monoxide alarms in every dwelling unit in buildings in Use Groups I-1, R-1, R-2, R-3 and R-4, unless the unit has no fuel-burning device or attached garage. Alarms must sit near sleeping areas, be UL-2034 listed, and tampering with one is a separate offense.

Trenton Carbon Monoxide Alarm Rules

Some Restrictions

Trenton Code § 97-17D

D. Carbon monoxide alarms shall be installed in all dwelling units in buildings in Use Groups I-1, R-1, R-2, R-3 and R-4, except for units in buildings that do not contain a fuel-burning device or have an attached garage, as follows: (1) Single station carbon monoxide alarms shall be installed and maintained in the immediate vicinity of the sleeping area(s). (2) Carbon monoxide alarms may be ba...

Building Permits

Trenton requires a permit from the code official before anyone constructs, alters, or demolishes a structure, adds an addition, changes occupancy, installs regulated equipment, or moves a lot line affecting an existing structure. City Code § 42-3E lists the covered activities; ordinary repairs that don't touch structural, egress, or utility work are exempted under § 42-3F.

Trenton Building Permit Requirements

Some Restrictions

Trenton Code § 42-3E

E. Permit application. An application shall be submitted to the code official for the following activities, and these activities shall not commence without a permit being issued: (1) Construct or alter a structure. (2) Construct an addition. (3) Demolish or move a structure. (4) Make a change of occupancy. (5) Install or alter any equipment which is regulated by this chapter. (6) Move a lot lin...

Electrical Permits

Trenton requires a construction permit before any electrical wiring for light, power, or communication is installed, altered, or extended in a building, administered by the Electrical Subcode Official. Only minor repairs like swapping lamps, switches, and fixtures are exempt; everything else must be inspected and certified before use.

Trenton Electrical Work Permit Requirement

Some Restrictions

Trenton Code § 42-10

A. Permit required; exceptions. No electrical or wiring for light, power or communication shall be installed in a building or structure, nor shall an alteration or extension of existing systems be made until a permit has been issued therefor as provided for in this code, except in the case of a system designed for the following purposes or which is by or for the following agencies: (1) Minor re...

Plumbing Permits

Trenton enforces the New Jersey Uniform Construction Code through its Division of Technical Services, whose Plumbing Subcode Official issues permits before any plumbing fixture, appliance or system is installed or altered. Fees run from $68 for the first three fixtures up to $147 per special device, plus a state training surcharge on top.

Trenton Plumbing Permit Rules and Fees

Some Restrictions

Trenton Code § 42-1A and § 42-12B

§ 42-1. Uniform Construction Code Enforcing Agency. A. Establishment; composition. There is hereby established a State Uniform Construction Code Enforcing Agency to be known as the Division of Technical Services, consisting of a Construction Official, Building Subcode Official, Plumbing Subcode Official, Electrical Subcode Official, Fire Protection Subcode Official, Elevator Subcode Official an...

Building Inspections

Trenton's Housing Inspector can enter and survey dwellings between 9:00 a.m. and 8:00 p.m. for periodic inspections, with emergency entry allowed any time. Owners and occupants must give access on request; interference is itself a code violation.

Trenton Housing Inspector Entry Hours and Authority

Some Restrictions

Trenton Code § 132-7

§ 132-7. Hours. A. The Housing Inspector shall make periodic inspections to determine the condition of dwellings, dwelling units, rooming units and premises located within this City, in order that (s)he may perform his/her duty of safeguarding the health, safety and welfare of the occupants of dwellings and of the general public. For the purpose of making inspections, the Housing Inspector is h...

Looking for Mercer County county-wide rules?

County ordinances apply to unincorporated areas and may supplement Trenton city rules.

Building Safety in Mercer County