Why trust this guide: General Contractor NYC connects homeowners across Manhattan, Brooklyn, Queens, the Bronx, and Staten Island with licensed general contractors. The permit types, timelines, and 2026 rule changes below come from NYC DOB filing guidance and DOB NOW procedures. We also checked them against permit and cost patterns from contractor quotes and referral inquiries across our network.
A homeowner in Astoria called us in June. Her contractor quoted $4,200 just to file permits for a kitchen wall removal. That was on top of the $38,000 renovation. She wanted to know if that was normal. It is. NYC building permit fees and expediting costs for a mid-size renovation usually run $500–$4,000. That’s separate from architect or engineer drawing fees. NYC DOB permits cause more renovation delays than anything else we track. And a new 2026 rule just added a step for co-op and condo owners. This guide covers which projects need a DOB permit, the permit types, what changed in 2026, real costs, and real timelines. General Contractor NYC is a referral network. We connect homeowners with independent, licensed contractors who file the permits and do the work.
What Actually Requires a DOB Permit
Almost all construction, renovation, and alteration work in NYC needs a permit. The exceptions are narrow.
Requires a permit:
- Removing or altering a load-bearing wall
- Adding or moving plumbing fixtures or gas lines
- New or upgraded electrical circuits and panels
- HVAC or mechanical system changes
- Window replacement that changes the opening size
- Any change to occupancy, use, or egress
Usually exempt:
- Painting and wallpaper
- Flooring replacement (with some exceptions)
- Like-for-like fixture swaps with no plumbing moved
Even a “cosmetic” kitchen refresh can need a permit. A sink shift or a new outlet crosses the line. See our complete NYC home renovation guide for how permits fit into your overall timeline.
The Main NYC DOB Permit Types
DOB sorts renovation work into a few categories. The category changes your cost and your timeline.
| Permit Type | Covers | Needs PE/RA Drawings? |
|---|---|---|
| ALT1 | Work that changes use, egress, or occupancy; most structural work | Yes, always |
| ALT2 | Multi-trade work that doesn’t change use or egress (most gut renovations) | Often eligible for self-certification |
| ALT3 | Simple, limited-scope work; common for 1–2 family homes | Sometimes |
| NB (New Building) | Ground-up construction | Yes, always |
| LAA | Limited scope — fences, sidewalk sheds, signs | No |
Most homeowner renovations file as ALT2. A Registered Architect or Professional Engineer can self-certify an ALT2 or ALT3 filing. That can cut approval to days instead of weeks. But DOB audits some self-certified jobs after the fact.
From the Field — The self-certification trade-offSelf-certifying sounds like a shortcut, and it often is. But a failed audit can trigger a stop-work order mid-renovation. That costs more time than the standard plan exam would have. Ask your contractor if your scope is a safe candidate for self-certification before you choose it for speed alone.
What Changed for NYC Homeowners in 2026
Two 2026 rules change renovation timelines. Most generic permit guides online still don’t mention them.
Co-op and condo board attestation (effective January 26, 2026): Building boards must now attest inside DOB NOW that they reviewed and approved your renovation plans. DOB won’t accept your filing until they do. Before this rule, board approval and DOB filing ran on separate tracks. This adds about 2–4 weeks to co-op and condo timelines.
Structural permit filing restriction (effective February 2, 2026): Structural work tied to a larger project can no longer be filed as a separate alteration. If your renovation includes load-bearing wall removal or other structural changes, that work must go in the main alteration application now.
From the Field — Budget the new co-op timeline nowSince January, several co-op renovations in our network stalled at the board-attestation step. Homeowners assumed their old approval letter was enough. It isn’t. Boards must attest inside DOB NOW directly. Confirm with your managing agent that this step is scheduled before you lock in a start date.
NYC DOB Permit Timelines in 2026
| Filing Type | Typical Approval Timeline |
|---|---|
| Self-certified ALT2/ALT3 | Days to 1–2 weeks |
| Standard ALT2/ALT3, plan-examined | 1–4 weeks |
| ALT1 or NB, full plan examination | 4–12 weeks |
| Structural work bundled into ALT1 | 6–12 weeks |
| Landmark district property (DOB + LPC) | 3–6 months |
These ranges assume a clean, complete filing. DOB objections add weeks. So does a missing co-op attestation or incomplete drawings. Landmark districts need Landmarks Preservation Commission sign-off before DOB will issue a permit. Parts of Brooklyn Heights, the Upper West Side, and Greenwich Village fall in this category. That’s what drives most multi-month timelines.
What NYC DOB Permits Cost in 2026
- DOB filing fees: These scale with permit type and declared job value. LAA filings start near $100. Larger ALT1/NB filings can run into the thousands.
- Expediter fees: $500–$2,500, depending on project complexity.
- Architect or engineer drawings: Usually $5,000–$50,000+. It depends on scope, project size, and whether structural work is involved.
A Bronx homeowner doing a $25,000 bathroom gut with plumbing work should budget a few thousand dollars for permits. A Manhattan co-op doing a full gut with structural changes will pay more. Get exact numbers from your contractor once the scope is set. Never accept a flat permit-cost estimate before that.
Co-op and Condo Approval Now Runs Through DOB NOW
Most co-op and condo buildings need a separate alteration agreement too. As of 2026, the board must log its approval directly inside DOB NOW before DOB will accept your filing. Typical requirements:
- Your contractor’s plans submitted to the managing agent
- Contractor insurance, usually $1M–$2M general liability, with the building named as additional insured
- A signed alteration agreement, sometimes with a $500–$5,000 security deposit
- Confirmed work hours — usually Monday–Friday, 9am–5pm in Manhattan buildings
Start your board approval the same week your contractor begins the DOB filing. Run them together, not one after the other. Sequencing them wrong is now the top cause of permit delay we see reported. For help vetting a contractor who can manage this process, see our guide on how to hire a general contractor in NYC.
What Happens If You Skip the Permit
Unpermitted work in NYC costs real money, not just risk on paper. DOB can issue a stop-work order right away. Work Without Permit violations carry base fines of $2,500 to $25,000, plus daily penalties until you fix it. Unpaid fines can become a lien on your property. That can block a future sale or refinance. Legalizing unpermitted work after the fact usually costs two to three times the original permit. Your homeowner’s insurance may also deny claims tied to unpermitted electrical or plumbing work. For the full picture, read what to know before starting a construction project in NYC.
How to Check a Permit’s Status
You can search filed permits on NYC DOB’s public DOB NOW and BIS systems by address or job number. Recent filings live in DOB NOW. Older permits and violations still sit in BIS. Check both if you’re researching a property’s full permit history.
Getting Started
Permit strategy belongs in your contractor’s estimate from day one. It shouldn’t be an afterthought once demo starts. If your renovation touches structure, plumbing, gas, or electrical, get matched with a licensed NYC building contractor who can map the right permit path before you commit to a start date.
Frequently Asked Questions
Do I need a permit for a cosmetic renovation in NYC?
Usually not for paint, wallpaper, or flooring alone. But even a cosmetic-looking kitchen or bathroom refresh often needs a permit if it touches plumbing, electrical, or fixture moves. Confirm scope with a licensed contractor before you assume your project is exempt.
How long does it take to get a NYC building permit in 2026?
Self-certified ALT2/ALT3 filings can clear in days to two weeks. Standard plan-examined filings run 1–4 weeks for minor work and 4–12 weeks for major ALT1 or new-building filings. Co-op and condo projects now add 2–4 weeks for the required board attestation inside DOB NOW.
What happens if I renovate without a permit in NYC?
DOB can issue a stop-work order right away, plus a Work Without Permit violation. Base fines run $2,500 to $25,000, plus daily penalties until you resolve it. Legalizing the work later usually costs two to three times the original permit fee. Unpaid fines can become a lien on the property.
What is DOB NOW and do I have to use it?
DOB NOW is NYC’s online filing platform for permit applications, inspections, and, since January 2026, co-op and condo board attestations. Nearly every current permit filing goes through DOB NOW. The older BIS system mainly helps you look up historical permits and violations.
Does my co-op board need to approve my permit before DOB will accept it?
Yes, as of January 26, 2026. Co-op and condo boards must attest inside DOB NOW that they reviewed and approved your plans. DOB will not accept the filing until they do. Before this rule, board approval and DOB filing ran on separate tracks.
General Contractor NYC is a referral network. We connect homeowners with independent, licensed contractors who provide the quotes and complete the work. Reference: NYC Department of Buildings.
