Resources
Every official source, one page
The 60 links an NYC zoning and development professional keeps open: the Resolution and its maps, the property records behind every report, the overlays that constrain a site, and the programs that change what it is worth. Curated, described, and checked.
60 resources
Zoning text & maps
The Resolution itself, the maps that apply it, and the programs that have rewritten it.
The full text of the NYC Zoning Resolution, browsable by article, chapter and section, with the current amendment history.
Envelope uses this for Every FAR, height, setback and yard rule a report cites resolves to a section here.
- ZR
- text
- FAR
- bulk
- use groups
DCP's interactive map. Look up any lot's zoning district, commercial overlay, special district, MIH area and pending map amendments.
- map
- district
- overlay
- lookup
The 126 official zoning map sections as PDFs, with the index sheet, plus a georeferenced set on Open Data.
Also: Map index (Open Data) · Georeferenced maps
- map
- sections
DCP's plain-English companion to the Resolution: what each district allows, illustrated, with the 2024–25 City of Yes changes.
- explainer
- districts
- handbook
The December 2024 housing text amendment: UAP bonus, transit-oriented and town-center development, ADUs, parking reform, small-lot and campus rules. Text, maps and explainers.
Envelope uses this for The UAP, TOD and parking-zone scenarios in a report are modeled on this text.
- City of Yes
- UAP
- TOD
- ADU
- parking
The June 2024 commercial and manufacturing amendment: modernized use groups, corner stores, life-science and small-scale production rules.
- City of Yes
- commercial
- use groups
- manufacturing
The December 2023 amendment easing solar, storage, EV charging, retrofits and permitted obstructions for energy equipment.
- City of Yes
- solar
- retrofit
- permitted obstructions
Where residential parking minimums are reduced or eliminated. DCP's explainer plus the Appendix I maps in the Resolution.
Also: ZR Appendix I maps
Envelope uses this for Determines the parking requirement applied to each scenario.
- parking
- transit
- Appendix I
- map
The borough-by-borough maps of MIH areas and the options that apply in each, plus DCP's program page and map.
Also: DCP MIH page & map
Envelope uses this for Flags MIH on a lot and sizes the affordable set-aside in the pro forma.
- MIH
- affordable
- Appendix F
- map
The voluntary bonus program: DCP's explainer of designated areas and how the bonus floor area is earned, with HPD's program guidance.
Also: HPD Inclusionary Housing
- inclusionary
- bonus FAR
- affordable
Appendix B: every special district by name, map number and ZR chapter, alongside DCP's overview of what they modify.
Also: DCP overview
Envelope uses this for Reports load the subdistrict rules for lots inside a special district.
- special district
- Appendix B
- index
LH-1, LH-1A and LH-2 caps (50, 60 and 70 ft) inside historic districts. DCP's explainer and ZR §23-739.
Also: ZR 23-739
- height
- LH
- historic district
Environmental designations on the zoning map for hazardous materials, air quality or noise — what they require before a permit is issued.
Envelope uses this for E-designated lots are flagged in the report's constraints section.
- environmental
- remediation
- OER
- E-designation
Search every land use application by project, applicant, ULURP number or location and read the filed documents.
Envelope uses this for The source of the pending rezonings shown in Market Intel.
- applications
- ULURP
- search
- rezoning
Where each application sits in the review clock, and the City Planning Commission's review-session and public-hearing schedule.
Also: Commission meetings
- ULURP
- calendar
- CPC
- text amendment
The expedited review track approved by voters in November 2025 for modest upzonings and affordable-housing dispositions — HPD's explainer and the Charter Commission's summary.
Also: Charter Revision Commission
- ELURP
- charter
- 2025
- expedited review
Property data
Lot, building, ownership, permit and tax records — the primary sources behind every report.
DCP's lot-level dataset: zoning, lot dimensions, building class, floor area, ownership and assessed values for every tax lot. Download, ArcGIS service and Open Data table.
Also: ArcGIS FeatureServer · PLUTO on Open Data
Envelope uses this for The lot record every report starts from; we track each PLUTO release and re-check lots that changed.
- PLUTO
- lots
- GIS
- download
- ArcGIS
The Department of Finance's tax-lot map and property record portal — block and lot boundaries, condo units, and the tax map history.
Also: DOF tax map page
- tax map
- DOF
- block and lot
- condo
The city register: deeds, mortgages, leases, easements and every recorded document on a lot in Manhattan, Bronx, Brooklyn and Queens.
Also: ACRIS master on Open Data
Envelope uses this for Ownership, sale history and mortgage records in the property intelligence section.
- deeds
- ownership
- mortgages
- records
Search current job filings, permits, certificates of occupancy, and licensee records filed through DOB NOW.
Envelope uses this for Recent filings and permit status on the development timeline.
- DOB
- permits
- jobs
- CO
The legacy property profile: BIN, complaints, violations, older jobs, elevator and boiler records, and historic certificates of occupancy.
- DOB
- BIS
- BIN
- certificate of occupancy
Open and closed DOB violations as a dataset, and the OATH (formerly ECB) ticket finder for hearing status and penalties.
Also: OATH ticket finder
Envelope uses this for The Violations Investigator reads these feeds and watches for status changes.
- violations
- ECB
- OATH
- penalties
Registered owners and managing agents, open HPD violations, complaints, litigation and vacate orders for multi-family buildings.
- HPD
- violations
- registration
- multifamily
Tentative and final assessment rolls back to 2010, plus the portal for a lot's current tax bill, exemptions and abatements.
Also: Property Information Portal
Envelope uses this for Assessed value and current taxes in the pro forma's tax basis.
- assessment
- taxes
- DOF
- exemptions
Zoning districts, commercial overlays, special districts, limited height districts and map amendments as a geodatabase, updated monthly.
Also: DCP zoning GIS page
Envelope uses this for The district polygons behind our map layers and split-lot detection.
- Open Data
- GIS
- zoning districts
- shapefile
The three permit feeds: legacy BIS job filings, DOB NOW job filings, and issued permits.
Also: DOB NOW job filings · Permit issuance
Envelope uses this for New-building filings feed the pipeline and comps.
- Open Data
- DOB
- permits
- new buildings
DCP's free address geocoder built on the Property Address Directory. Returns the BBL and BIN for a typed address. API docs on GitHub.
Also: API source
Envelope uses this for Turns the address you type into a BBL.
- geocoder
- API
- address
- BBL
The Landmarks Preservation Commission's map of individual, interior and scenic landmarks and historic district boundaries.
Envelope uses this for Landmark and historic-district status on every report.
- landmarks
- LPC
- map
- historic district
LPC's designation reports and the list of every designated landmark and district, with the boundaries and the reasoning.
Also: Designations
- LPC
- historic district
- designation
Overlays & constraints
Flood, waterfront, industrial, landmark and street conditions that sit on top of the district.
Effective FIRMs, the preliminary maps for NYC, and letters of map change by address.
Envelope uses this for Flood zone and base flood elevation on the constraints panel.
- flood
- FIRM
- FEMA
- BFE
DCP's viewer of current and preliminary flood zones with projected future floodplains, lot by lot.
- flood
- map
- resiliency
- sea level
The Waterfront Revitalization Program's coastal zone boundary and consistency review, and DCP's waterfront zoning rules (Article VI, Chapter 2) with the adopted WAPs.
Also: Waterfront zoning & WAPs
- waterfront
- WRP
- coastal zone
- WAP
- public access
Where the Food Retail Expansion to Support Health bonus applies: extra floor area and reduced parking for a qualifying grocery store.
- FRESH
- grocery
- bonus FAR
NYCEDC's page on the 21 IBZs, with the boundaries and the relocation credit. Residential rezonings inside an IBZ are discouraged by policy.
- IBZ
- industrial
- manufacturing
- EDC
HUD's map of designated census tracts and the CDFI Fund's official list. The NYC tracts are fixed through 2028.
Also: CDFI Fund
Envelope uses this for Reports flag lots inside an OZ tract.
- OZ
- tax
- census tract
- map
The Special Hillside Preservation District (Staten Island) and the Special Natural Area Districts (Staten Island, Riverdale, Douglaston) that restrict grading, tree removal and steep-slope building.
Also: Special Natural Area District (ZR Art. X Ch. 5)
- steep slope
- Staten Island
- Bronx
- SNAD
- hillside
DSNY's containerization requirements for residential and commercial buildings, and the Resolution's off-street loading berth requirements.
Also: ZR 36-60 loading (C districts) · ZR 44-50 loading (M districts)
- DSNY
- containerization
- loading berth
- waste
The official City Map online: mapped streets, widths, name changes and the City Map alterations that affect a lot's frontage.
- City Map
- streets
- frontage
- mapped street
The GIS release of the City Map: street centerlines, mapped widths and the status of each segment, for the wide-street/narrow-street test.
Envelope uses this for Street width drives which height and setback table applies.
- street width
- wide street
- GIS
- DCM
DOT's permanent outdoor dining program: eligibility, siting rules, clear-path and setback requirements, and the application.
- sidewalk café
- DOT
- outdoor dining
The citywide one-foot digital elevation model and the planimetric spot-elevation points — for curb level, base plane and flood-elevation work.
Also: Spot elevations
- elevation
- DEM
- curb level
- base plane
Process & incentives
How an application moves, and the tax and housing programs that change what pencils.
DCP's step-by-step of the Uniform Land Use Review Procedure — certification, community board, borough president, CPC and Council clocks.
Also: All land use review procedures
- ULURP
- process
- rezoning
- timeline
Variances, BSA special permits and appeals of DOB determinations: the Board's calendar, decisions and how to file.
Also: Applications
- variance
- special permit
- BSA
- appeal
The Department's binding interpretations and policies, issued by year. Where zoning-related DOB positions get written down.
- DOB
- bulletins
- policy
- interpretation
Technical and Operations Policy and Procedure Notices — the older interpretive memos that still govern many filings.
- DOB
- TPPN
- OPPN
- policy
The ZD1 zoning diagram required on new building and enlargement filings, and the DOB forms index.
Also: DOB forms index
- ZD1
- forms
- filing
- DOB
The 2024 successor to 421-a: benefit tiers, affordability and wage requirements, and the application process at HPD.
Envelope uses this for The 485-x option in the pro forma's tax basis.
- 485-x
- tax exemption
- affordable
- rental
The expired program still governing buildings vested before June 2022, with the extended completion deadline for eligible projects.
- 421-a
- tax exemption
- legacy
DOF's abatement for building or renovating commercial and industrial property outside the Manhattan exclusion area.
- ICAP
- abatement
- commercial
- industrial
The 2024 reboot of J-51: an abatement for major capital work on eligible affordable and moderate-income rental and co-op buildings.
- J-51
- rehabilitation
- abatement
Grants of up to $395,000 for eligible one- to four-family homeowners to build or legalize an accessory dwelling unit.
- ADU
- HPD
- grant
- homeowner
The pilot in fifteen community districts that lets existing basement and cellar apartments be legalized over time, with DOB's filing path and HPD's tenant rules.
Also: HPD basements & cellars
- basement
- cellar
- legalization
- LL126
DCP's explainer of where detached, attached, basement and attic ADUs are now permitted, and DOB's code guidance for ancillary dwelling units.
Also: DOB ancillary dwelling units
Envelope uses this for Reports on one- and two-family lots test the ADU option.
- ADU
- City of Yes
- backyard cottage
- basement
The 2024 tax exemption for converting commercial buildings to housing with an affordable share, and the city's Office Conversion Accelerator.
Also: Office Conversion Accelerator
Envelope uses this for The office-to-residential screening applies the 467-m eligibility tests.
- 467-m
- office conversion
- tax exemption
- adaptive reuse
How work on a landmark or in a historic district is approved: permit types, staff-level vs. Commission review, and the Portico filing system.
Also: Permit types · Portico
- LPC
- permit
- CNE
- certificate of appropriateness
The city's affordable housing lottery portal — where MIH, 485-x and Inclusionary units are marketed and leased.
- lottery
- affordable
- marketing
- HPD
Envelope
Our own guides, sample reports and tools.
Plain-language answers to the questions every NYC feasibility study has to settle: as-of-right studies, buildable SF, City of Yes, air rights.
- guides
- how-to
Real lots, real numbers: complete zoning reports you can read before you run one.
- sample
- report
Enter any NYC address and start a zoning report: as-of-right FAR, massing, scenarios and value.
- report
- address
- start
How Envelope sits against PropertyScout, PropertyShark, Buildout, TestFit, Gridics and Agora.
- compare
- software
Missing something?
If there is an official source you reach for that is not here, tell us. We read every suggestion and add the ones that earn a place.
Rather have the answer than the sources? Envelope reads all of these for any lot and returns the zoning analysis in about a minute.
Run a zoning report