Table of Contents
- Most NYC construction work needs a DOB permit; cosmetic work like painting generally does not, but building rules still apply.
- Alterations are filed in DOB NOW: Build by a New York State registered architect or licensed professional engineer as applicant of record.
- Co-ops and condos require board approval first; DOB reportedly added a board attestation in DOB NOW in January 2026, so confirm with your managing agent.
- Simple filings can move in weeks while complex ones take months; design and filing fees often add about 15 to 25 percent.
- A new Existing Building Code under Local Law 33 of 2026 is expected to take effect July 17, 2027; current rules apply until then.
For most New Yorkers, the permit process starts with a sinking feeling: someone mentions the Department of Buildings, and a simple kitchen update turns into a legal project. It does not have to. A permit is a defined sequence of steps with defined people responsible for each. Once you know who does what, it becomes manageable.
This page is the practical route. It shows how to decide whether you need a permit, who files, what to prepare, how long things take and where co-op and condo rules fit. For the longer, more detailed version that adds asbestos testing, closeout and sample scenarios, read our complete NYC renovation permit guide. This page is current as of October 2026.
1. Step One: Decide Whether You Need a Permit
In New York City, most construction work needs a Department of Buildings permit. That includes moving walls, changing layouts, plumbing and gas work, electrical work beyond minor repairs, new windows in some cases, structural changes and work on building systems. Cosmetic work such as painting and many surface finishes generally does not need a DOB permit, but co-op, condo or landlord rules still apply.
Quick tests:
- Does the work change a wall, door opening, stair, window opening or floor structure? Probably a permit.
- Does it move or add plumbing, gas or electrical lines? Probably a permit.
- Is it surface-only, like paint, trim or floor refinishing? Often no permit, but check building rules.
- Is the building landmarked or in a historic district? Landmarks review may apply, especially for exterior work.
Our permit checker and the guide on when you need a building permit in New York walk through the edge cases. The NYC Department of Buildings also explains the basics of obtaining a permit.
2. Step Two: Understand the Lingo, Alt1 and Alt2
You will hear "Alt1" and "Alt2" from architects, expediters and managing agents. These are older names for alteration applications. In rough terms, an Alt1 involved a change of use, egress or occupancy that meant a new or amended certificate of occupancy. An Alt2 covered other alterations that did not change those things. DOB's current system, DOB NOW: Build, uses application types such as New Building, Alteration-CO and Alteration. The practical translation:
| Older shorthand | Current type | Typical project |
|---|---|---|
| Alt1 | Alteration-CO | Converts use, changes egress or occupancy |
| Alt2 | Alteration | Kitchen or bath renovation, moving walls, mechanical work |
| New Building | NB | Ground-up construction |
Your design professional decides the correct filing. Ask them to explain it in plain language so you understand the scope and fees.
Some permit renewals and legacy filings remain in older DOB systems, so you may see both. Do not worry about which portal; your professional handles it.
3. Step Three: Hire the Right Professionals
Several roles appear in a permit set.
- Applicant of record: A New York State registered architect or licensed professional engineer who files the alteration application and certifies drawings.
- Licensed contractor: For residential remodeling in NYC, a Home Improvement Contractor license from the Department of Consumer and Worker Protection is required. The DCWP license checklist explains the basics.
- Licensed trades: Plumbing and electrical work require licensed professionals, and electrical work follows its own permit path. See our NYC electrical permit guide.
- Expediter: An optional helper who tracks filings and responds to objections.
- Owner or board: Authorizes the work.
A design-build firm can coordinate these roles under one contract. A pure drafting firm, a separate GC and a separate expediter each add handoffs.
4. Step Four: Prepare What the Filing Needs
Expect to provide or gather:
- Property address, block and lot, and the owner's authorization.
- A clear scope: what changes, what stays.
- Existing conditions: a survey or measured drawings.
- Architectural or engineering drawings that comply with the current codes.
- For co-ops and condos: board-approved plans and the alteration agreement.
- Contractor information, license numbers and insurance certificates.
- Hazmat documentation, such as asbestos survey results for older buildings.
- Product and fixture specifications where required.
Your design professional works from the NYC Construction Codes. A major change is coming: Local Law 33 of 2026 enacts a new Existing Building Code that DOB says will take effect July 17, 2027, governing all alteration applications from then. Until then, current rules apply, so filings today follow today's code.
5. Step Five: File, Review and Respond
Once the plans are ready, your professional files in DOB NOW: Build. DOB reviews for zoning, code and safety. Common outcomes:
- Approved: The permit can be issued after fees and requirements are met.
- Objections: DOB asks for corrections; your professional responds.
- Audit or additional review: For some filings, extra checks apply.
The process is iterative. Good drawings reduce rounds. Simple filings can move in weeks, while complex ones, landmark-related review or repeated objections can take months. See our timing guide for how long a building permit takes in NYC.
DOB posts procedural changes on its service updates page, which is worth a glance before you file.
6. Step Six: Co-op and Condo Board Factor
If you live in a co-op or condo, the board is part of the process, and often the slowest part.
- Read the alteration agreement. It lists what needs approval, insurance, deposits, working hours, and contractor requirements.
- Submit a package. Drawings, scope, contractor details, insurance certificates and schedule.
- Respond to comments. Boards and their engineers often ask for changes.
- Get written approval. Keep it; you will need it for the DOB filing.
- Follow the rules during work. Elevator reservations, floor protection and quiet hours are enforced.
Industry reports indicate DOB reinstated a board attestation inside DOB NOW: Build, effective January 26, 2026, confirming alterations are board-approved. This is reported, so confirm with DOB and your managing agent. In practice, that makes board approval before filing even more important.
Work hours matter too. The NYC Noise Code generally limits construction to weekdays from about 7 AM to 6 PM unless an after-hours variance is approved, and many buildings restrict to roughly 9 AM to 5 PM on weekdays. Always confirm with building rules.
7. Costs and Timeline: What to Expect
Government fees are only one part of the bill. Design, engineering and expediting often add about 15 to 25 percent on top of construction for larger projects, and landmarked buildings often add roughly 15 to 20 percent to time and budget. The numbers below are typical 2026 planning ranges. Building rules, access, hazmat, finishes and scope move prices, and a written itemized quote governs.
| Project | Typical timeline | Notes |
|---|---|---|
| Interior painting, 1 to 3BR | 2 to 7 working days | Generally no DOB permit |
| One bathroom renovation | 3 to 6 weeks | Permit depends on scope |
| Kitchen renovation | 6 to 12 weeks | Often needs permits when plumbing, gas or walls change |
| Full apartment gut | 4 to 9 months including approvals | Design, board, filings, construction |
| Simple filing | Weeks | Clear scope, clean drawings |
| Complex filing | Months | Objections, landmark review |
Typical costs for context: a bathroom renovation runs roughly $30,000 to $60,000 or more, a kitchen $25,000 to $85,000 or more, and a gut renovation about $250 to $500 or more per square foot all-in. Our 2026 NYC renovation cost guide lays out the ranges.
Three common scenarios
A paint-and-floor refresh in a co-op. No DOB permit is typical, but the board still wants an alteration agreement, insurance and a flooring sound-rating submission. Timeline is driven by the board, not the city.
A kitchen with a relocated sink and a gas range. Plumbing and gas changes mean a licensed plumber, a design professional and a filing. If a wall comes down, the drawings add structure. Expect the filing to be the long pole.
A brownstone gut with a new stair. Egress and structural changes, possible landmark review and an asbestos survey push this into the longest timelines. This is where a single accountable team earns its fee.
8. Mistakes That Delay Permits
- Starting work before the permit.
- Hiring an unlicensed contractor.
- Skipping the board approval or filing before it arrives.
- Incomplete drawings or unclear scope.
- Changing scope mid-project without amending the filing.
- Ignoring asbestos testing in older buildings.
- Forgetting sign-off, which leaves open permits that can block a sale or refinance later.
Unpermitted work can bring stop-work orders and violations, complicate insurance claims and delay sales. A little paperwork up front costs less than fixing problems later.
9. Why a Design-Build Firm Makes Permits Easier
Permits are not hard because the forms are impossible. They are hard because the pieces must arrive in order: scope, drawings, board package, hazmat results, contractor insurance, filing and sign-off. Miss one, and the others wait.
N.Y. Renovation Services designs and builds in-house, from blueprints to the final coat of paint. We are fully licensed and insured, and we handle permitting and co-op or condo board paperwork when your project requires it. That means the scope you approve in design is the scope we price and build, and the schedule includes approvals instead of ignoring them. We coordinate licensed plumbers, electricians and registered design professionals, plan around freight elevators and building hours, and arrange hazard testing before demolition when a building's age calls for it.
Pricing is itemized and transparent, with design, filing, demolition and finish lines separated, so you can see exactly what the permit process costs. Five percent of total project cost goes to a nonprofit of your choice.
Compare that with piecing it together: a separate drafter, a separate expediter, a general contractor who was not at the design table and a board that sees three versions of the plan. Most delays come from mismatches between those parties. One contract, one schedule and one responsible team cut that risk.
Here is how our permit-ready process runs. We begin with a free walk-through to define scope and note building rules. We then coordinate drawings with a registered design professional, assemble the board package and certificate of insurance, and submit. While approvals proceed, we finalize product selections and lock in a schedule with realistic approval windows. When the permit is issued, demolition and construction begin in the order we planned, and we help close out the filing at the end. If you want to see what that would look like for your address, request an itemized quote and tell us your building type.
You can see how we handle kitchens at Kitchen Remodeling NYC, and our related guides explain how to obtain a building permit in New York and how to get a construction permit in NYC in plain steps.
10. Neighborhoods and ZIP Codes We Serve
Permit paths vary with the building and the area.
- Washington Heights, Manhattan (ZIPs 10032, 10033, 10040): Pre-war elevator buildings and co-ops on steep terrain. Board approval, elevator scheduling and access around hills shape the schedule.
- Marine Park, Brooklyn (ZIP 11234): Detached homes, large lots and basements. Basement finishing and additions often involve DOB filings and sometimes zoning questions.
- Howard Beach, Queens (ZIP 11414): Waterfront homes in flood-zone areas with basements. Elevation and flood-resistant materials rules may apply, so verify with DOB.
- Annadale, Staten Island (ZIP 10312): Detached homes and townhouse complexes. HOA or complex rules and DOB filings apply for structural work.
- Cedarhurst, Nassau County (ZIP 11516): Five Towns large colonials. Building permits come from the local village or town, and Nassau County requires contractor licensing through county consumer affairs. Verify details with the municipality and the Nassau County website.
- North Bergen, Hudson County NJ (ZIP 07047): Multifamily buildings, row houses and condos. Permits are issued by the local construction office under New Jersey's Uniform Construction Code.
11. Next Steps: Get Your Free Estimate
You now have the map. The next step is a scope. Send us your address, a short description of the work and photos if you have them. We will tell you whether a filing is likely, what your building may require and what the schedule and budget look like.
Request a free estimate or call (347) 455-1741, Monday through Saturday, 8 AM to 5 PM. If you want to evaluate returns first, use the renovation ROI calculator. Before hiring anyone, including us, read the NYC contractor hiring checklist, which covers licenses, insurance and contract terms.
Safety Note: All work follows OSHA 30 safety and EPA Lead-Safe practices for pre-1978 homes. Check local permit requirements before starting.
James - Lead Renovation Editor. With over 20 years in renovation and construction, James writes and edits our guides. More about James