NYC Building Permits: Cost, Types & How to Get One (2026)

01 · THE SHORT ANSWERWhat a building permit costs in NYC

Most NYC renovation permits cost a few hundred dollars in DOB filing fees — but the fee is only the small part. Because nearly every permit must be filed by a registered architect, engineer, or licensed contractor, the real cost of permitting a typical apartment renovation lands between $2,000 and $10,000+ once professional fees are included. DOB's filing fee itself scales with the estimated job cost, so bigger jobs pay more. Always confirm the current amounts on the DOB fee schedule before budgeting.

02 · DO I NEED ONE?Which work needs a permit

Needs a permit

Structural work, moving or removing walls, new plumbing or gas lines, electrical changes, façade repairs, mechanical systems, changes of use or occupancy, demolition, and most full renovations. If the work touches structure, building systems, or the certificate of occupancy, assume it needs a permit.

Exempt — "ordinary repairs"

Painting, plastering, flooring, cabinet swaps, and like-for-like minor repairs need no permit. The line between "ordinary repair" and "alteration" is narrower than most contractors claim — when in doubt, have a design professional confirm before work starts.

03 · PERMIT TYPESThe filings you'll actually see

• New Building (NB) — ground-up construction.
• Alteration CO (Alt-CO) — major work that changes use, egress, or occupancy; ends with a new or amended certificate of occupancy.
• Alteration (Alt) — renovations that don't change the C of O; the most common filing for apartment and storefront work.
• Limited Alteration Application (LAA) — small plumbing, sprinkler, or oil-burner jobs filed by a licensed trade.
• Demolition (DM) — full or partial demolition.

04 · HOW TO GET ONEThe filing path, step by step

1. Hire a registered design professional (architect or engineer). Except for trade-only LAA work, they prepare and file the application.
2. File in DOB NOW. All new applications go through the DOB NOW portal — plans, fees, and objections are handled there. (Older jobs live in BIS; here's which portal to use when.)
3. Clear objections. A plan examiner reviews the filing; most jobs get at least one round of objections before approval.
4. Pull the work permit. After approval, the licensed contractor pulls the actual permit and posts it on site.
5. Pass inspections and sign off. The job isn't done until final inspection and Letter of Completion — an open job on the record is a common closing headache years later.

05 · CHECK ANY ADDRESSHow to look up permits on a building

Permits are public. Search the address in DOB NOW's public portal or BIS to see every application, permit, and job status on the property — or run a free ViolationWatch lookup to see permits alongside violations, complaints, and stop-work orders on the same screen.

06 · SKIP IT AND IT COSTS MOREThe penalty math

Working without a permit triggers a civil penalty calculated from the scope of the work, a separate ECB/OATH violation with its own hearing, usually a stop-work order — and you still pay every permit fee to legalize the work after the fact. The full breakdown is in our work-without-permit guide, but the summary is: the permit is always the cheap option.

07 · WATCH THE RECORDPermits on your building you didn't file

A tenant's contractor, a neighbor's shared-wall job, or unpermitted work you never heard about can all land on your record as complaints and violations. ViolationWatch's detection engine surfaces new DOB filings, complaints, violations, and stop-work orders on your buildings in real time — so you hear about them the day they appear, not at closing. Start a 7-day trial or see DOB monitoring.

Last updated: July 2026.