New York City has many zoning districts and subdistricts, each with its own rules and regulations governing property development within the district. R10 is one example of a residential zoning district in NYC.
R10 is a high-density Residential Zoning District in New York City. You can find R10 Zoning Districts in Manhattan, Brooklyn, and Queens.
I am Jorge Fontan, an architect in New York and owner of Vinculum Architecture, a Manhattan-based architecture firm. At Vinculum, we work on a variety of project types, from property and zoning analysis to complete building designs for new developments. In this article, I will review some of the basics of the New York City Zoning District R10.
R10 Zoning
Multiple New York City Zoning Districts, such as R10, have fixed height limits and mandatory setbacks as options or alternative regulations for Tower zoning. The City of Yes significantly modified the rules under the New York City Zoning for Housing Opportunity amendment. This article reflects those modifications.
Qualifying Affordable Housing Option
Developers planning projects in an R10 Zoning District have the option to construct a strictly market-rate building or to incorporate Qualifying Affordable Housing units. While different zoning regulations and bulk rules apply to each approach, the inclusion of affordable housing allows for a larger overall development, including an increased Floor Area Ratio (FAR) and a higher maximum building height. There are also modified regulations for Qualifying Senior Housing.
R10 Zoning Commercial Overlay
When a residential district includes a commercial overlay (e.g., C1 or C2), the zoning permits local retail and services within the residential district.
This designation provides flexibility: developers can construct a purely commercial building, a residential building, or a mixed-use building combining both functions. It is crucial to note that the zoning regulations—particularly regarding Floor Area Ratio (FAR) and building bulk — vary significantly between the commercial and residential portions of a development.
R10 Zoning & Community Facility Use
The R10 Zoning District is primarily residential, but you can develop community facility uses (such as schools, medical facilities, and certain non-profits) as-of-right.
Key considerations for the development of a Community Facility in an R10 zone include:
- Different Regulations: When you develop a site with community facility use, the specific bulk regulations (including Floor Area Ratio and height limits) may differ from those for standard residential buildings.
- Mixed-Use Options: Developers may also construct a mixed-use building that combines both residential and community facility components.
R10 Zoning Regulation Basics
Lot Size:
- Minimum Lot width =18 Feet
- Minimum Lot Area = 1,700 Sq Ft
For Single or Two Family Detached Developments the Lot Size is:
- Minimum Lot Width = 25 Feet
- Minimum Lot Area = 2,375 sq ft
Floor Area Ratio (FAR):
- FAR = 10
- Qualifying Affordable Housing FAR = 12
Yards for Zero Lot Line or Detached Buildings:
- Corner Lot: No Yards Required
- Interior Lot = 20 foot minimum rear yard required below a height of 75 feet
- Interior Lot = 30 foot minimum rear yard required above a height of 75 feet
Yards for attached and Semi-Detached Buildings:
- Corner Lot: No Yards Required
- Interior Lot with a Width Less than 40 feet = 30 foot minimum rear yard required below a height of 75 feet
- Interior Lot with a Width of 40 feet or more = 20 foot minimum rear yard required below a height of 75 feet
- Interior Lot = 30 foot minimum rear yard required above a height of 75 feet
Lot Coverage:
- Corner Lot = 100%
- Interior or Through Lot = 80%
Density Factor
Density Factor (Also known as Dwelling Unit Factor) does not apply to all areas of NYC
- 680
Base Height Wide Street: This indicates a setback is required at these heights.
- Base Height = 60 Minimum / 155 Maximum
- Qualifying Affordable Housing Base Height = 60 Minimum / 155 Maximum
A setback is required in the base height range. Or this can be the maximum height of the building without a setback.
Building Height Wide Street: This is the maximum building height.
- Building Height: = 215 feet
- Qualifying Affordable Housing Building Height: =235 feet
Base Height Narrow Street: This indicates a setback is required at these heights.
- Base Height = 60 Minimum / 125 Maximum
- Qualifying Affordable Housing Base Height = 60 Minimum / 155 Maximum
A setback is required in the base height range. Or this can be the maximum height of the building without a setback.
Building Height Narrow Street: This is the maximum building height.
- Building Height: = 185 feet
- Qualifying Affordable Housing Building Height: =235 feet
Tower Regulations
There are alternate set of rules known as Tower Regulations that allow a building to exceed the height limitations. This exception applies to R10 Zoning. The Sliver Law applies to Tower buildings.
Sliver Law
The Sliver Law is a New York City zoning regulation that limits the height of buildings on lots less than 45 feet wide to prevent the development of excessively tall, slender structures. While the law does not apply to buildings in districts that follow the height limit guidelines, it remains applicable in R10 for developments using Height Factor and Sky Exposure Plane options.
Parking in R10
The new City of Yes for Housing Opportunity zoning changes have now drastically reduced parking requirements in New York City. There are currently no parking requirements for the Inner Transit Zone, and reduced parking requirements in the Outer Transit Zone, which can be waived under certain conditions.
R10 Zoning Districts:
- R10
- R10A
- R10H
- R10X
Commercial Districts with R10 Residential Equivalents:
Most commercial districts in New York City have a Residential Equivalent. This designation means that you have the option for developing residential use in the given commercial district and that regulations of the applicable Residential Equivalent would govern the residential portion of the building. The following are commercial zoning districts with an R10 Residential Equivalent:
- C1-9
- C2-8
- C4-6
- C4-7
- C5
- C6-4
- C6-5
- C6-6
- C6-7
- C6-8
- C6-9
R10 Zoning
New York City zoning is complicated and has many special circumstances. This post is intended to provide a brief general overview of R10 zoning. This article is not a substitute for the New York City Zoning Resolution.
If you are considering a development project, contact us at Vinculum Architecture for a consultation. We can help you determine the feasibility of your project, provide full design services, and guide you through the intricate process of obtaining city approvals to bring your vision to life. Succeeding in the NYC real estate market requires a strategic approach to the city’s complex regulatory environment. We offer both vision and expert architectural services.
Thank You for Reading Our Article on R10 Zoning In New York City
I hope this was helpful. If you would like to speak with an architect about a potential project, please get in touch with us directly at Vinculum Architecture.
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This post was written by Jorge Fontan AIA a Registered Architect and owner of New York City based architecture firm Vinculum Architecture. Jorge Fontan has earned 3 degrees in the study of architecture including two degrees from the City University of New York and a Masters Degree in Advanced Architectural Design from Columbia University. Jorge has a background in construction and has been practicing architecture for 20 years where he has designed renovations and new developments of various building types.
