NYC permits for renovation, electrical and plumbing work
Summary
Painting, flooring and like-for-like replacements usually do not need a permit in NYC. New wiring, moving plumbing or gas, removing walls and structural work do, and they must be filed by licensed professionals.
Work that usually does not need a permit
The Department of Buildings (DOB) treats small cosmetic work as ordinary repairs (opens an external site). A co-op or condo may still want to approve it.
Electrical and plumbing work are different: in NYC, even small jobs that need no permit must be done by a licensed electrician or a Licensed Master Plumber.
- Painting, plastering and wallpaper
- New flooring and tile without moving plumbing
- Replacing cabinets and countertops in the same place
- Replacing a faucet or toilet with a similar one, done by a Licensed Master Plumber, without changing the shutoff valves or trap
Work that requires a permit
- Electrical work beyond simple replacements: new circuits, panels, service upgrades, EV chargers, solar. A licensed master electrician files it (opens an external site) through DOB NOW: Build.
- Plumbing or gas work that adds or moves piping. A licensed master plumber files it; small jobs may use a Limited Alteration Application (opens an external site).
- Removing or adding walls, changing the layout, or structural repairs. A registered architect or professional engineer files drawings through DOB NOW: Build. In a building built before April 1, 1987, the filing also needs an asbestos assessment (ACP-5) (opens an external site), or an exemption form, before the permit is issued.
- Converting a basement or attic to living space, adding a unit or changing a building's use. These change the certificate of occupancy and are filed as an Alteration-CO, which takes the longest to approve and sign off. Many cellars and basements cannot be legalized because of ceiling height, light, air and egress rules; have the architect confirm feasibility before you spend on design.
Landmarks and co-op or condo approvals
If your building is a landmark or in a historic district, exterior work and some interior work also need approval from the Landmarks Preservation Commission (opens an external site).
Co-op and condo boards have their own approval process on top of any DOB permit.
Long Island
In Nassau and Suffolk, permits come from your town or village building department, and electrical work is inspected by an approved electrical inspection agency. Rules differ from town to town, so check before work starts.
The risks of unpermitted work
Work without a permit can lead to violations, stop-work orders, insurance problems and delays when you sell or refinance. A contractor who offers to skip the permit to save money is passing that risk to you.
Frequently asked questions
Who files the permit?
Licensed professionals do: a master electrician for electrical work, a master plumber for plumbing and gas, and an architect or engineer for alterations. Your contractor coordinates it.
How long do permits take?
Simple electrical and plumbing permits are often issued quickly. Jobs that require drawings and DOB review take longer: an Alteration without a change to the certificate of occupancy is often approved in a few weeks, while an Alteration-CO commonly takes several months including sign-off. Request a permit timeline with your estimate.
Does a contractor need a license for home improvement work in NYC?
Yes. Contractors doing home improvement work on homes and apartments in NYC need a Home Improvement Contractor license (opens an external site) from the Department of Consumer and Worker Protection. You can look up the license online.
Sources
6 sources
- Do I Need a Permit? (opens an external site)NYC Department of Buildings
- Electrical Permit (opens an external site)NYC Department of Buildings
- Limited Alteration Applications (LAA) for Property Owners (opens an external site)NYC Department of Buildings
- Permit Application Guide (opens an external site)NYC Landmarks Preservation Commission
- Home Improvement Contractor Permit Requirements (opens an external site)NYC Department of Buildings
- Project Requirements: Asbestos (opens an external site)NYC Department of Buildings
This guide reflects our experience and our interpretation of the rules as of the date it was published or last updated. Regulations, codes, incentives and the way agencies enforce them change often, and our interpretation may be incomplete or wrong. It is general information, not legal, engineering, tax or financial advice. Consult the relevant agency and a licensed professional before you plan, purchase or begin any work. Reading this guide does not make you our client and does not create any contractor, consulting or advisory relationship. Outstanding Construction Inc is not liable for any loss arising from the use of or reliance on this content, and is responsible only for work performed under a written contract signed with us.