Do I need an architect or engineer to file for a building permit in NYC?

Yes. All building permit applications in NYC must be filed by a New York State licensed architect or professional engineer (PE). They serve as the applicant of record and are responsible for code compliance. Licensed professionals can self-certify plans through DOB NOW, which significantly speeds up the approval process (1-5 days vs. 20-40 days for DOB examination).

What is FAR and how does it affect my project?

Floor Area Ratio (FAR) is the total floor area of all buildings divided by the zoning lot area. It is the primary development control in NYC. Each zoning district has a maximum FAR (e.g., R1 is 0.5, R6A is 3.0, R10 can be up to 10.0). FAR bonuses may be available through Inclusionary Housing, public plazas, or other mechanisms. Certain spaces like mechanical rooms and qualifying cellars are excluded from the calculation.

What are the residential setbacks in NYC?

Setbacks vary dramatically by district. R1/R2 detached zones require 15-20 foot front, 5-8 foot side, and 30-foot rear yards. Medium-density R6-R7 zones use height factor and sky exposure plane rules instead of simple setbacks. High-density R8-R10 use tower-on-base or Quality Housing programs. Special purpose districts and contextual zoning may override base requirements. Check ZoLa at zola.planning.nyc.gov.

What if my property is in a historic district?

Properties in NYC's 150+ historic districts require Landmarks Preservation Commission (LPC) review for all exterior changes visible from a public way. Individual landmarks require LPC approval for any exterior work. Minor alterations may get staff-level approval; major changes need a Certificate of Appropriateness from the full Commission. LPC review adds 30-90 days.

What flood zone requirements apply after Hurricane Sandy?

NYC Building Code Appendix G requires construction to the Design Flood Elevation (DFE), which is BFE plus 1-2 feet of freeboard. The Flood Resilience Zoning Text Amendment provides zoning relief for buildings that need to elevate in flood zones. Mechanical systems must be above DFE. Flood zones affect significant areas of all five boroughs, especially coastal neighborhoods.

What is professional certification (self-certification)?

Professional certification allows a licensed architect or PE to self-certify that plans comply with all applicable codes, bypassing DOB plan examination. This dramatically speeds up approval (1-5 days vs. 20-40 days). The professional assumes liability. Not all work types are eligible. DOB conducts random audits of self-certified applications.

How do I file through DOB NOW?

DOB NOW (dobnow.nyc.gov) is the electronic filing system for most permit applications. Your licensed architect or PE creates an account, enters project details, uploads plans in PDF format, and pays fees online. The system routes the application for review and provides real-time status updates. Complex projects may require in-person Hub filing at the Borough office.

How long does the NYC permit process take?

Self-certified applications: 1-5 days. DOB-examined applications: 20-40 business days initial review, with potential resubmissions adding weeks. LPC review: 30-90 days. Full environmental review (CEQR/ULURP): 6-12 months. Simple residential alterations are typically fastest. New buildings and major enlargements take longest.

New York City Site Plan Requirements & Permit Guide (2025)

By Site Plan Creator Team • March 6, 2026

Everything you need to know about creating site plans for building permits in New York City, including DOB requirements, zoning regulations, and submission procedures.

New York City Site Plan Requirements: Complete Guide for Building Permits

Creating a site plan for a building permit in New York City requires meeting specific requirements set by the Department of Buildings (DOB). NYC has the most complex building regulatory system in the United States, governed by the NYC Zoning Resolution, the NYC Building Code, and the NYC Construction Codes. All building permit applications must be filed by a New York State licensed architect or professional engineer.

What Is a Site Plan and Why Does NYC Require One?

A site plan (called a plot plan in NYC practice) is a scaled drawing showing your property boundaries, existing structures, proposed construction, setbacks, and site features. DOB requires a plot plan as part of every building permit application to verify compliance with the NYC Zoning Resolution. You can look up your property's zoning through the city's ZoLa (Zoning and Land Use Map) at zola.planning.nyc.gov.

Required Site Plan Elements for DOB

DOB requires the following elements on all plot plans:

Property boundaries with accurate dimensions and total lot area (lot area per tax lot)
Yard setbacks (front, side, rear) per the Zoning Resolution for your zoning district
Existing structures with square footage, height, number of stories, and use group classification
Proposed construction clearly distinguished from existing structures
Floor Area Ratio (FAR) calculation showing existing and proposed floor area
Lot coverage and open space ratio calculations
Sky exposure plane and height factor calculations for applicable districts
Parking spaces per the Zoning Resolution (number of required and provided spaces)
Curb cuts and driveways with DOT approval numbers if applicable
Street trees per Parks Department requirements
Flood zone designation if in a Special Flood Hazard Area
North arrow and scale
Block and lot number (BBL — Borough, Block, Lot)

NYC Zoning Districts and Setback Requirements

NYC's Zoning Resolution creates an intricate system of residential, commercial, and manufacturing districts:

R1/R2 (Detached Single-Family): Front 15-20 feet, side 5-8 feet each, total side yards 13-18 feet, rear 30 feet. Max FAR 0.5. Max lot coverage 35%.
R3-R5 (Low-Rise Residential): Front 10-18 feet, side varies, rear 30 feet. Max FAR 0.5-1.25.
R6-R7 (Medium-Density): Height factor and sky exposure plane govern building envelope rather than simple setbacks. Max FAR 2.43-4.0 (Quality Housing).
R8-R10 (High-Density): Tower-on-base or Quality Housing programs. Max FAR up to 10.0 with Inclusionary Housing bonus.
Commercial overlays (C1, C2): Allow commercial uses within residential districts with modified standards.

NYC zoning is highly contextual — special purpose districts, contextual zoning, and overlay districts may significantly modify base regulations. Always check the full zoning designation through ZoLa.

Floor Area Ratio (FAR) and Bulk Controls

FAR is the primary development control in NYC and must be precisely calculated on your site plan:

FAR calculation: Total floor area of all buildings on a zoning lot divided by the lot area
Zoning lot: May differ from tax lot — multiple tax lots can be merged into one zoning lot
FAR bonuses: Available through Inclusionary Housing, public plazas, transit improvements, and other mechanisms
Community facility FAR: Often higher than residential FAR in the same district
Excluded floor area: Mechanical space, cellar space (if qualifying), and certain accessory spaces may be excluded from FAR calculations

Landmarks Preservation Requirements

NYC has over 37,000 landmarked properties and 150+ historic districts overseen by the Landmarks Preservation Commission (LPC):

Individual landmarks: Any exterior alteration, addition, or demolition requires LPC approval through a Certificate of Appropriateness or Permit to Work
Historic districts: All exterior changes visible from a public way require LPC review
Staff-level permits: Minor alterations may be approved at the staff level without a full Commission hearing
Environmental review (CEQR): Major projects may trigger City Environmental Quality Review

Flood Zone Requirements

After Hurricane Sandy (2012), NYC significantly strengthened flood requirements:

Flood zones: FEMA AE and VE zones cover significant areas of all five boroughs, particularly coastal Brooklyn, Queens, Staten Island, and lower Manhattan
Appendix G: NYC Building Code Appendix G requires elevation to Design Flood Elevation (DFE) — BFE plus 1-2 feet of freeboard depending on building category
Flood Resilience Text Amendment: Zoning relief available for buildings in flood zones that need to elevate (yard, height, and parking modifications)
Mechanical systems: Must be elevated above DFE or dry-floodproofed

DOB Filing Process

NYC has a unique filing system:

DOB NOW: The electronic filing system at dobnow.nyc.gov for most permit applications
Professional certification: Licensed architects/PEs can self-certify plans, bypassing DOB plan examination. The applicant assumes liability for code compliance
DOB plan examination: Non-certified applications are reviewed by DOB plan examiners. Initial review takes 20-40 business days
Hub filing: Complex projects may require in-person filing at the Borough office Hub

Permit Fees and Timeline

Filing fees: Based on construction cost and work type per DOB fee schedule
Plan examination fees: Additional fees for non-self-certified applications
No impact fees: NYC does not charge traditional development impact fees (infrastructure is funded through taxes)
Timeline: Self-certified applications can be approved in 1-5 days. DOB-examined applications take 20-40 business days for initial review, with potential resubmissions. LPC review adds 30-90 days. Full environmental review (CEQR/ULURP) can take 6-12 months.

Creating Your NYC Site Plan with Site Plan Creator

Site Plan Creator makes it easy to generate a professional plot plan for your NYC property. Simply enter your address, and the tool automatically loads your property boundaries, building footprints, and aerial imagery. You can then add setback lines, label structures, calculate FAR, and export a scaled PDF for your architect or PE to include in the DOB filing package.

Frequently Asked Questions

Do I need an architect or engineer to file for a building permit in NYC?: Yes. All building permit applications in NYC must be filed by a New York State licensed architect or professional engineer (PE). They serve as the applicant of record and are responsible for code compliance. Licensed professionals can self-certify plans through DOB NOW, which significantly speeds up the approval process (1-5 days vs. 20-40 days for DOB examination).
What is FAR and how does it affect my project?: Floor Area Ratio (FAR) is the total floor area of all buildings divided by the zoning lot area. It is the primary development control in NYC. Each zoning district has a maximum FAR (e.g., R1 is 0.5, R6A is 3.0, R10 can be up to 10.0). FAR bonuses may be available through Inclusionary Housing, public plazas, or other mechanisms. Certain spaces like mechanical rooms and qualifying cellars are excluded from the calculation.
What are the residential setbacks in NYC?: Setbacks vary dramatically by district. R1/R2 detached zones require 15-20 foot front, 5-8 foot side, and 30-foot rear yards. Medium-density R6-R7 zones use height factor and sky exposure plane rules instead of simple setbacks. High-density R8-R10 use tower-on-base or Quality Housing programs. Special purpose districts and contextual zoning may override base requirements. Check ZoLa at zola.planning.nyc.gov.
What if my property is in a historic district?: Properties in NYC's 150+ historic districts require Landmarks Preservation Commission (LPC) review for all exterior changes visible from a public way. Individual landmarks require LPC approval for any exterior work. Minor alterations may get staff-level approval; major changes need a Certificate of Appropriateness from the full Commission. LPC review adds 30-90 days.
What flood zone requirements apply after Hurricane Sandy?: NYC Building Code Appendix G requires construction to the Design Flood Elevation (DFE), which is BFE plus 1-2 feet of freeboard. The Flood Resilience Zoning Text Amendment provides zoning relief for buildings that need to elevate in flood zones. Mechanical systems must be above DFE. Flood zones affect significant areas of all five boroughs, especially coastal neighborhoods.
What is professional certification (self-certification)?: Professional certification allows a licensed architect or PE to self-certify that plans comply with all applicable codes, bypassing DOB plan examination. This dramatically speeds up approval (1-5 days vs. 20-40 days). The professional assumes liability. Not all work types are eligible. DOB conducts random audits of self-certified applications.
How do I file through DOB NOW?: DOB NOW (dobnow.nyc.gov) is the electronic filing system for most permit applications. Your licensed architect or PE creates an account, enters project details, uploads plans in PDF format, and pays fees online. The system routes the application for review and provides real-time status updates. Complex projects may require in-person Hub filing at the Borough office.
How long does the NYC permit process take?: Self-certified applications: 1-5 days. DOB-examined applications: 20-40 business days initial review, with potential resubmissions adding weeks. LPC review: 30-90 days. Full environmental review (CEQR/ULURP): 6-12 months. Simple residential alterations are typically fastest. New buildings and major enlargements take longest.

How to Create a Site Plan in New York City

Look Up Your Property Information: Use ZoLa (zola.planning.nyc.gov) to find your zoning district, FAR limits, special purpose districts, landmark status, and flood zone. Note your BBL (Borough, Block, Lot) number. Check for any active zoning text amendments or rezonings.
Engage a Licensed Architect or PE: Hire a New York State licensed architect or professional engineer to prepare and file your permit application. They will determine the applicable code requirements, calculate FAR, and prepare the filing package.
Create Your Site Plan: Enter your NYC address in Site Plan Creator to load property boundaries, building footprints, and aerial imagery. Add setback lines, label structures, and calculate lot coverage. Your architect/PE can use this as a base for the formal plot plan.
Include All Required Elements: Ensure the plot plan includes property boundaries, yard setbacks, FAR calculation, lot coverage, open space ratio, sky exposure plane (if applicable), parking, curb cuts, street trees, flood zone if applicable, and BBL number.
Prepare for Agency Reviews: If the property is landmarked, prepare LPC application. Check for CEQR requirements. For flood zone properties, prepare flood-resistant design documentation. Coordinate with DOT for curb cuts if needed.
File Through DOB NOW: Your architect/PE files the application through DOB NOW, choosing either self-certification or DOB examination. Upload plans, pay filing fees, and submit. Complex projects may require Hub filing at the Borough office.
Manage Review and Obtain Permit: Track the application through DOB NOW. Respond to examiner objections or audit requests. Once approved, the permit is issued electronically. Post the permit at the job site and schedule required inspections through DOB NOW.