Certificate of Occupancy Requirements

Before any residential unit in Warren can be rented—whether short-term or long-term—the property must have a valid Rental Certificate of Occupancy (COO) on file with the Code Enforcement Office. This certificate confirms the unit is safe, suitable for occupancy, and compliant with local codes.

COOs are required for all rental units, including:

  • Apartments or multi-unit buildings

  • Single-family homes rented to others

  • Short-term rentals (e.g., AirBnB, seasonal stays)

  • Accessory units, such as garage or basement apartments

How Long is a Rental COO Valid?

A Rental COO in Warren is valid for five (5) years from the date of issuance.
To remain in compliance:

  • Property owners must schedule a re-inspection before the certificate expires.

  • If substantial changes are made to the unit or property (e.g., conversions, renovations, or additions), a new inspection may be required.

Inspection Checklist: Life Safety Requirements

A rental unit will not be approved without passing a life safety inspection conducted by the Code Enforcement Officer. The inspection verifies compliance with the following minimum standards:

Structural and Building Safety

  • No visible signs of rot, deterioration, or structural failure

  • Stairs, porches, decks, and railings must be sound and secure

  • Windows must open and close properly if used as a means of egress

  • Walls, ceilings, and floors must be free of hazardous conditions

Fire Safety

  • Working smoke detectors on every level and in/near each bedroom

  • Working carbon monoxide detectors outside each sleeping area

  • Safe, code-compliant means of egress (at least one direct path to the outside)

  • No blocked or nailed shut windows, doors, or escape routes

Electrical and Heating

  • No exposed wiring, open junction boxes, or overloaded circuits

  • All outlets and switches must function properly and be covered

  • Heating system must provide adequate and safe heat

  • No use of unvented combustion heaters as a primary heat source

Plumbing and Sanitation

  • Running water, functional plumbing, and access to a kitchen and bathroom

  • Adequate hot water

  • No leaks, mold, or unsanitary conditions

General Requirements

  • Clearly visible street address numbers

  • Adequate lighting for entryways and hallways

  • Safe and operable entry and exit doors

  • No unpermitted additions, conversions, or structural changes