Permit Fee Estimator
Estimate your New York City deck permit fee based on project value. This is an estimate only — verify with NYC Department of Buildings.
This is an estimate based on the DOB alteration filing fee: $130 min + $2.60 per $1,000 fee structure. Actual fees depend on your project scope and may include plan review fees. Always confirm with NYC Department of Buildings.
What's Required in New York City
- New decks and porches are filed as an alteration by a Registered Design Professional (PE or RA) in DOB NOW; not on the 1 RCNY 101-14 exemption list
- Work permit issued to a Registered General Contractor; DCWP Home Improvement Contractor license required at 1-4 family homes
- Guards required where the deck is more than 30 in above adjacent grade, within 36 in of the edge (DOB Decks and Porches code notes)
- Filing set: PW1 (scope, zoning district), PW3 cost estimate, TR1 special inspections, ZD1 zoning diagram
- Zoning governs decks in required yards (ZR §23-44), setbacks (§23-632) and rooftops
- Building Code governs distance to property lines, anchorage to the exterior wall, combustible materials and loads
- Deck lighting or outlets need a separate electrical permit by a Licensed Master Electrician
- In-kind board replacement with no structural change is an ordinary repair and needs no permit
Do You Need a Permit to Build a Deck in New York City?
Yes. Decks are not among the exempt items in DOB rule 1 RCNY 101-14 (sheds, fences, small pools and packaged AC units are; decks are not), and DOB's own Decks and Porches code notes state that a registered design professional shall submit applications for approval. A deck is an accessory structure attached to the building and elevated from grade, so it is filed as an alteration in DOB NOW: Build by a Professional Engineer or Registered Architect, and the work permit is issued to a Registered General Contractor. The only deck work that escapes a filing is an ordinary repair: replacing existing work in the ordinary course of maintenance that does not affect structural safety, which the Administrative Code defines narrowly and which excludes removing or modifying structural beams or supports.
NYC Deck Permit Rules by Scenario
| What you are doing | DOB filing | Rule |
|---|---|---|
| New attached deck or porch, any height | Alteration filed by a PE or RA in DOB NOW | DOB Decks and Porches code notes |
| Rebuilding a deck, including its framing or supports | Alteration filing (structural work is not an ordinary repair) | Admin Code §28-105.4.2.1 |
| Replacing deck boards or a railing in kind, no structural change | None (ordinary repair) | Admin Code §28-105.4.2 |
| Deck surface more than 30 in above grade | Guards required within 36 in of the edge | DOB Decks and Porches code notes (BC guards and loads) |
| Deck in a required rear yard or on a roof | Filed; zoning review of yard and rooftop rules | ZR §23-44 and rooftop sections cited by DOB |
| Lighting or outlets on the deck | Separate electrical permit by a Licensed Master Electrician | DOB Electrical System owner requirements |
| Deck on a landmarked property | Landmarks Preservation Commission approval first | DOB accessory-structure guidance |
How Much Does a Deck Permit Cost in NYC?
The DOB fee is small next to the deck itself. Under Administrative Code Table 28-112.2 (as amended by Local Law 128 of 2024, in effect since December 21, 2025), an alteration to a one-, two- or three-family home costs a $130 minimum for the first $5,000 of job cost, plus $2.60 for each additional $1,000. An $18,000 deck therefore files at about $164; a $40,000 one at about $221. In buildings that are not one- to three-family and are under seven stories, the minimum is $225 for the first $3,000 plus $10.30 per additional $1,000. The current page used to cite a $280 minimum: that is the Alteration Type 1 minimum for larger buildings, not the figure for a house. The PE or RA who draws the plans and the licensed contractor who builds it set their own fees.
What DOB Reviews on a Deck Filing
DOB's code notes list the documents: the PW1 application with the scope and zoning district, a PW3 cost estimate, a TR1 statement of responsibility for special inspections, and a ZD1 zoning diagram. The Zoning Resolution decides where the deck may go and whether it counts as floor area, with decks in required rear yards governed by §23-44, decks in side and rear setbacks by §23-632, and rooftop decks by their own sections. The Building Code governs distance to property lines, guards where the deck is more than 30 inches above adjacent grade, anchorage to the exterior wall, combustible materials, and design loads. Special inspections may be required depending on the material, connections and foundation.
Who Files and Builds a Deck in New York City?
Plans are prepared and filed by a PE or RA. The permit goes to a Registered General Contractor, and for one- to four-family homes that contractor also needs a Department of Consumer and Worker Protection Home Improvement Contractor license. Any wiring is a Licensed Master Electrician's job under its own electrical permit. Once built, the deck is inspected and signed off by DOB.
How to Get a Deck Permit in New York City
Hire a PE or RA
A registered design professional prepares the plans and the zoning diagram; DOB's code notes require one for deck and porch applications.
File the alteration in DOB NOW
PW1, PW3, TR1 and ZD1. Fee: $130 minimum for the first $5,000 of job cost plus $2.60 per $1,000 above that at a 1-3 family home.
Pull the permit through a registered GC
The permit is issued to a Registered General Contractor with a DCWP Home Improvement Contractor license for 1-4 family homes.
Build to code
Guards above 30 inches, proper ledger anchorage, materials and loads per the Building Code; special inspections where the TR1 requires them.
Electrical and sign-off
Any wiring goes on a separate electrical permit; DOB inspects and signs off the completed deck.