Zoning › New York › Westchester County › Yonkers

Yonkers, NY Zoning

Euclidean-zoning. 22 districts · 7 overlays · 8 applicable state preemptions.

Overview

Code type
euclidean
Naming convention
letter-code

naming_notes=Hybrid letter-code: S-{nnn} residential numeric suffix = minimum lot width in feet (S-200 = 200 ft, S-100 = 100 ft, S-75 = 75 ft, S-60 = 60 ft, S-50 = 50 ft), NOT lot size in 1000s sf. Letter codes for multifamily (T, MG, M, A), business (B, BA, CB, BR, OL), industrial (CM, C, IP, I), and special (CU, DW, GC, CA, D-MX, L-MX) districts. Mixed-use overlays D-MX and L-MX defined separately in Articles XVIII and XX (not in main Table 43-3).

Worth knowing
  • S-{nnn} naming convention encodes minimum LOT WIDTH in feet, NOT lot size in 1,000s sf. S-200 = 200 ft minimum lot width with 20,000 sf min lot; S-100 = 100 ft / 10,000 sf; S-75 = 75 ft / 7,500 sf; S-60 = 60 ft / 6,000 sf; S-50 = 50 ft / 5,000 sf.
  • Three districts (A, BA, C) use a STREET-WIDTH MULTIPLIER for height: max permitted height = 1.5 × width of fronting street right-of-way (footnotes 1 and 3). The I District uses 2 × street width (footnote 6). Parcel-specific capacity therefore depends on fronting street ROW — no single numeric height for these districts.
  • Density metric is min_lot_area_per_family (sf per dwelling unit), NOT du/ac. MF densest in M District (800 sf/DU), then A District (no per-family minimum — FAR + height + coverage govern), then MG (1,000 sf/DU).

+ 12 more in Quirks & notes

Districts

res_sf 6com 6res_mf 3cbd 3spec 2ind 2
CodeNameCategory Min lotHeight CoverageFAR Du/acParking Setbacks F/S/R
S-200Detached One-Family Dwelling — 200 ft minimum lot widthres_sf20,000 sf[4]35 ft[5]0.3[6]0.56[7]——25[1] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 20}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 40}][2] / 25[3]
S-100Detached One-Family Dwelling — 100 ft minimum lot widthres_sf10,000 sf[11]35 ft[12]0.3[13]0.56[14]——25[8] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 15}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 30}][9] / 25[10]
S-75Detached One-Family Dwelling — 75 ft minimum lot widthres_sf7,500 sf[18]35 ft[19]0.35[20]0.6[21]——25[15] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 11}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 23}][16] / 25[17]
S-60Detached One-Family Dwelling — 60 ft minimum lot widthres_sf6,000 sf[25]35 ft[26]0.4[27]0.68[28]——20[22] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 8}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 17}][23] / 25[24]
S-50Detached One-Family Dwelling — 50 ft minimum lot widthres_sf5,000 sf[32]35 ft[33]0.4[34]0.75[35]——20[29] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 6}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 15}][30] / 25[31]
TTwo-Family Dwellingsres_sf5,000 sf[39]35 ft[40]0.4[41]1[42]——20[36] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 6}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 15}][37] / 25[38]
MGApartment Houses — Low Density (Garden)res_mf[{'variant': 'single/two-family', 'citation': 'Table 43-3', 'value': 5000}, {'variant': 'multifamily', 'citation': 'Table 43-3', 'value': 10000}] sf[46][{'variant': 'single/two-family', 'citation': 'Table 43-3', 'value': 35}, {'variant': 'multifamily', 'citation': 'Table 43-3 (3 stories / 35 ft)', 'value': 35}] ft[47]0.4[48][{'variant': 'single/two-family', 'citation': 'Table 43-3', 'value': 1.0}, {'variant': 'multifamily', 'citation': 'Table 43-3', 'value': 1.2}][49]——[{'variant': 'single/two-family', 'citation': 'Table 43-3', 'value': 20}, {'variant': 'multifamily', 'citation': 'Table 43-3', 'value': 25}][43] / [{'variant': 'single/two-family one/both', 'citation': 'Table 43-3', 'note': 'value_raw=6/15', 'value': 6}, {'variant': 'multifamily one/both', 'citation': 'Table 43-3', 'note': 'value_raw=25/50', 'value': 25}][44] / 25[45]
MApartment Houses — Medium Densityres_mf5,000 sf[53][{'variant': 'single/two-family', 'citation': 'Table 43-3', 'value': 35}, {'variant': 'multifamily', 'citation': 'Table 43-3 (--/65)', 'value': 65}] ft[54]0.4[55][{'variant': 'single/two-family', 'citation': 'Table 43-3', 'value': 1.0}, {'variant': 'multifamily', 'citation': 'Table 43-3', 'value': 1.25}][56]——[{'variant': 'single/two-family', 'citation': 'Table 43-3', 'value': 20}, {'variant': 'multifamily', 'citation': 'Table 43-3', 'value': 15}][50] / [{'variant': 'single/two-family one/both', 'citation': 'Table 43-3', 'note': 'value_raw=6/15', 'value': 6}, {'variant': 'multifamily one/both', 'citation': 'Table 43-3', 'note': 'value_raw=12/25', 'value': 12}][51] / 25[52]
AElevator Apartment — High Densityres_mf5,000 sf[60]—[61]0.4[62][{'variant': 'single/two-family', 'citation': 'Table 43-3', 'value': 1.0}, {'variant': 'multifamily', 'citation': 'Table 43-3', 'value': 3.0}][63]——[{'variant': 'single/two-family', 'citation': 'Table 43-3', 'value': 20}, {'variant': 'multifamily', 'citation': 'Table 43-3', 'value': 25}][57] / [{'variant': 'single/two-family one/both', 'citation': 'Table 43-3', 'note': 'value_raw=6/15', 'value': 6}, {'variant': 'multifamily one/both', 'citation': 'Table 43-3', 'note': 'value_raw=16/32', 'value': 16}][58] / 25[59]
BNeighborhood Business with Apartmentscom[{'variant': 'residential 1F/2F', 'citation': 'Table 43-3 Residential', 'value': 5000}] sf[67]35 ft[68][{'variant': 'residential floors', 'citation': 'Table 43-3 footnote 4', 'value': 0.4}, {'variant': 'nonresidential-only floors', 'citation': 'Table 43-3 footnote 4', 'note': 'If only first floor is nonresidential, 70% limited to ≤20 ft above street, then 40% above', 'value': 0.7}][69][{'variant': 'residential 1F/2F', 'citation': 'Table 43-3 Residential', 'value': 1.0}, {'variant': 'residential MF', 'citation': 'Table 43-3 Residential', 'value': 1.25}, {'variant': 'nonresidential', 'citation': 'Table 43-3 Nonresidential', 'value': 1.5}][70]——10[64] / —[65] / 25[66]
BAGeneral Business with Apartment Housingcom——[74][{'variant': 'residential floors', 'citation': 'Table 43-3 footnote 4', 'value': 0.4}, {'variant': 'nonresidential-only floors', 'citation': 'Table 43-3 footnote 4', 'value': 0.7}][75][{'variant': 'residential 1F/2F', 'citation': 'Table 43-3 Residential', 'value': 1.0}, {'variant': 'residential MF', 'citation': 'Table 43-3 Residential', 'value': 3.0}, {'variant': 'nonresidential', 'citation': 'Table 43-3 Nonresidential', 'value': 5.0}][76]——10[71] / —[72] / 20[73]
CBCentral Business Districtcbd—50 ft[78]0.9[79][{'variant': 'multifamily base', 'citation': 'Table 43-3 Residential', 'value': 5.0}, {'variant': 'designated development site', 'citation': 'Table 43-3 footnote 4', 'value': 6.0}, {'variant': 'nonresidential', 'citation': 'Table 43-3 Nonresidential (--/--, with note 2)', 'note': 'FAR shown as 5.00 with note 8 = on designated development site, FAR may go to 6.00', 'value': 5.0}][80]——— / — / 10[77]
BRRestricted Business / Residencecom10,000 sf[84]48 ft[85]0.4[86]1.5[87]——25[81] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 25}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 50}][82] / 25[83]
OLOffice Buildings and Researchcom7,500 sf[91]45 ft[92]0.4[93]0.8[94]——25[88] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 10}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 32}][89] / 25[90]
CUColleges, Universities, and Theological Seminariesspec15,000 sf[98]39 ft[99]0.4[100]1.25[101]——25[95] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 15}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 30}][96] / 25[97]
CACommunity Assembly / CA Districtspec15,000 sf[105]39 ft[106]0.4[107]1.25[108]——25[102] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 15}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 30}][103] / 25[104]
DWDowntown Waterfront Districtcbd—66 ft[110]0.9[111]4.5[112]——— / — / 10[109]
GCGovernment Center Districtcbd—100 ft[114]0.9[115]9[116]——— / — / 20[113]
CMCommercial, Storage, Light Manufacturingcom10,000 sf[120]35 ft[121]0.5[122]1[123]——20[117] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 16}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 32}][118] / 20[119]
CWholesale Business and Storagecom——[126]0.7[127]6[128]——— / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 5}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 10}][124] / 20[125]
IPPlanned Industrial Parkind175,000 sf[132]35 ft[133]0.4[134]0.8[135]——50[129] / [{'variant': 'one yard', 'citation': 'Table 43-3', 'value': 50}, {'variant': 'both yards (total)', 'citation': 'Table 43-3', 'value': 100}][130] / 50[131]
IIndustry, Residences Excludedind——[138]0.75[139]7.5[140]——— / —[136] / 20[137]

Confidence: confirmed partial under review not found

Overlays

D-MX
Downtown Mixed-Use District
SPEC
Chapter 43 Article XVIII

Designated portions of downtown Yonkers (Getty Square area, South Broadway, Main Street, Buena Vista Avenue, areas surrounding the Yonkers Metro-North station). Boundaries on Official Zoning Map.

L-MX
Ludlow Mixed-Use District
SPEC
Chapter 43 Article XX (G.O. No. 12-2022)

Area centered on the Ludlow Metro-North train station in southwestern Yonkers. Boundaries on Official Zoning Map.

HLD
Local Historic District / Landmark (Chapter 45)
SPEC
Chapter 45 (Historic and Landmarks Preservation), adopted 8-27-1991 by G.O. No. 17-1991

Locally-designated historic districts and individually-designated landmarks as identified by the Yonkers Landmarks Preservation Board and adopted by City Council. Boundaries shown on Official Landmarks/Historic District Map (separate from Zoning Map).

FEMA_SFHA
FEMA Special Flood Hazard Area (Floodplain)
SPEC
Yonkers floodplain ordinance referencing FEMA NFIP; FIRM panels for Westchester County

FEMA-mapped 1% annual chance flood zones, primarily Hudson River frontage, Saw Mill River corridor, Bronx River corridor, and Tibbetts Brook/Sprain Brook tributaries. Boundaries per current FIRM panels (Westchester County FIRM, 2007-2019 panel vintages).

COASTAL_LWRP
NY Coastal Management / Local Waterfront Revitalization Program (LWRP)
SPEC
NY Executive Law Article 42; 19 NYCRR Part 600; Yonkers LWRP (if adopted)

Yonkers' Hudson River shoreline and adjacent properties within the NY Coastal Area boundary

SEQRA_PROC
NY State Environmental Quality Review Act (SEQRA) — Procedural
SPEC
ECL Article 8; 6 NYCRR Part 617

Statewide — applies to all discretionary 'actions' by Yonkers Common Council, Planning Board, ZBA, and other agencies

OVERLAYS_SUPP
Supplementary Overlays — Additional Article References
SPEC
Chapter 43 Articles VI–XIX (supplementary use/dimensional; affordable housing; signs; stormwater; etc.)

Various — see Article-specific maps and triggers

State preemptions

NY-EO30-PHCapplies
Qualifying condition
City of Yonkers population 211,569 (Census 2020), downstate (Westchester County, MTA Metro-North service area, within NYC metro area). Downstate Pathway 1 PHC threshold = 1% housing-stock growth / 1 yr or 3% / 3 yr; Pathway 2 = HCR Pro-Housing Resolution + housing plan. Yonkers PHC certification status not verified against HCR live dashboard in this pass.
Source
NY Executive Order No. 30 (Hochul, 2023-07-18); HCR Pro-Housing Community Program; FY 2025 Enacted Budget appropriations.
Effect
Eligible (if certified) for DRI, NY Forward, Regional Council Capital Fund, NY Main Street, Market NY, Mid-Hudson Momentum Fund, MEP transit funding, and ESD Pro-Housing Community Supply Funds. Does not preempt local zoning.
NY-RPL-12D-STRapplies
Qualifying condition
Statewide framework (RPL Art. 12-D §§447-A to 447-G) effective 2024-12-21; county registry and platform verification effective 2025-09-22. Westchester County opt-out status not verified in this pass against county legislature minutes; default assumption: county registry applies unless opted out. State STR sales tax effective 2025-03-01 applies regardless of opt-out. Applicability per-parcel only for STR-use parcels.
Source
NY RPL Article 12-D (Chapter 594 of Laws of 2024; Chapter 99 of Laws of 2025).
Effect
If county has not opted out: STR hosts must register with Westchester County; booking platforms must verify registry. Yonkers retains local zoning authority over STRs.
NY-HUDSON-VALLEY-GREENWAYapplies
Qualifying condition
Yonkers borders the Hudson River and lies in Westchester County, one of the 13 counties expressly included in the Hudson River Valley Greenway (ECL Article 44 §44-0103). Yonkers' Greenway Community participation status (voluntary opt-in) not verified in this pass.
Source
NY Environmental Conservation Law Article 44 (Hudson River Valley Greenway Act of 1991).
Effect
Soft preemption — voluntary participation confers technical-assistance and funding-preference eligibility. No direct override of base district fields.
NY-TIDAL-WETLANDSapplies
Qualifying condition
ECL Article 25 / 6 NYCRR Part 661 tidal-wetlands jurisdiction extends to the lower Hudson River as far north as the salt front (typically Newburgh-Beacon, sometimes farther). Yonkers' Hudson River frontage is within the tidal Hudson and may carry DEC-mapped tidal wetlands and a 150-ft adjacent area on any waterfront parcel. Parcel-level mapping not performed in this pass.
Source
ECL Article 25; 6 NYCRR Part 661.
Effect
DEC tidal-wetlands permit required for regulated activity on tidal-mapped Yonkers waterfront parcels; permit is independent of city zoning approval.
NY-FRESHWATER-WETLANDSapplies
Qualifying condition
ECL Article 24 as amended by Part TT of Chapter 58 of Laws of 2022 (effective 2025-01-01) reduced DEC jurisdictional wetland threshold to 7.4 acres plus 'wetlands of unusual importance' with 100-ft adjacent area statewide. Yonkers contains Saw Mill River, Bronx River, Tibbetts Brook, and Sprain Brook watershed areas; parcel-level mapping not performed in this pass.
Source
ECL Article 24; 6 NYCRR Part 664.
Effect
DEC freshwater-wetlands permit required for regulated activity in or within 100 ft of mapped wetland on a Yonkers parcel.
NY-COASTAL-MANAGEMENT-LWRPapplies
Qualifying condition
Yonkers' Hudson River shoreline is within the NY Coastal Area as defined by Executive Law Article 42. Yonkers has historically prepared a Local Waterfront Revitalization Program (LWRP) consistent with the State Coastal Management Program; DOS-approved LWRP status not verified against DOS LWRP database in this pass.
Source
NY Executive Law Article 42; 19 NYCRR Part 600.
Effect
Projects in Yonkers' coastal area must be consistent with State CMP's 44 policies. If LWRP is DOS-approved, consistency review is delegated to the City; otherwise CMP federal consistency review applies through DOS.
NY-SEQRAapplies
Qualifying condition
SEQRA (ECL Article 8; 6 NYCRR Part 617) applies statewide to all discretionary 'actions' by state and local agencies. Yonkers' City Council, Planning Board, ZBA, and Industrial Development Agency must complete SEQRA review for rezonings, special permits, site plan approvals, downtown D-MX designations, and L-MX project approvals.
Source
NY Environmental Conservation Law Article 8; 6 NYCRR Part 617.
Effect
Procedural overlay on all discretionary land-use approvals. Local zoning substance unchanged; closing the approval requires SEQRA compliance (EAF, Type I/Unlisted → negative declaration or EIS).
NY-MANUFACTURED-HOUSING-NON-EXCLUSIONapplies
Qualifying condition
NY Constitution Art. I substantive due process doctrine (Kurzius v. Upper Brookville, 45 N.Y.2d 840 (1978)) prohibits total citywide exclusion of manufactured homes. Yonkers Chapter 43 district roster does not include a dedicated manufactured-home district; whether manufactured homes are permitted as accessory or special-use in any base district was not exhaustively verified against Table 43-2 in this pass.
Source
Kurzius v. Upper Brookville, 45 N.Y.2d 840 (1978); NY DOS Municipal Regulation of Manufactured Housing (Sept 2024).
Effect
Constitutional floor: total exclusion would be unconstitutional. Yonkers retains authority to confine manufactured homes to designated districts; under-review at parcel level.
Non-applicable laws (7)
NY-MDL-26-3-NYC-FARdoes_not_apply
Qualifying condition
MDL §26(3) >12.0 FAR unlock pathway is statutorily limited to cities with population >= 1,000,000 (NYC only). Yonkers population 211,569 (Census 2020) << 1,000,000 threshold.
Source
NY Multiple Dwelling Law §26(3) as amended by Part Q of Chapter 56 of Laws of 2024.
Effect
No MDL FAR ceiling relief available in Yonkers.
NY-MDL-JURISDICTIONdoes_not_apply
Qualifying condition
MDL applies generally to NY cities with population >= 325,000 plus enumerated cities. Yonkers population 211,569 (Census 2020) < 325,000 threshold; Yonkers is NOT in the MDL-applicable city list (which is NYC, Buffalo, Rochester in 2026).
Source
NY Multiple Dwelling Law Article 1.
Effect
Multiple Dwelling Law habitability/use standards do not apply as state-law floor in Yonkers; NY State Uniform Code (19 NYCRR) governs.
NY-ADIRONDACK-PARKdoes_not_apply
Qualifying condition
City of Yonkers is in Westchester County (southernmost NY mainland), entirely outside the 6-million-acre Adirondack Park Blue Line in northern NY.
Source
NY Executive Law Article 27; APA Park Boundary GIS.
Effect
No APA jurisdiction over Yonkers parcels.
NY-CATSKILL-PARKdoes_not_apply
Qualifying condition
Catskill Park lies entirely north of Westchester County in Delaware, Greene, Sullivan, and Ulster counties.
Source
ECL Article 9; Catskill SLMP.
Effect
No Catskill State Land Master Plan jurisdiction over Yonkers.
NY-LONG-ISLAND-PINE-BARRENSdoes_not_apply
Qualifying condition
Pine Barrens zone is confined to Brookhaven, Riverhead, and Southampton towns in Suffolk County, Long Island. Yonkers is in Westchester County on the mainland.
Source
ECL Article 57.
Effect
No Pine Barrens Commission jurisdiction.
NY-NYC-ADU-COYdoes_not_apply
Qualifying condition
City of Yes ADU legalization (NYC Local Laws 126 & 127 of 2024) applies only inside NYC. Yonkers is not in NYC. There is NO state ADU mandate in NY outside NYC.
Source
NYC Local Laws 126 and 127 of 2024.
Effect
No state ADU mandate in Yonkers; ADU permissibility is purely local.
NY-RPTL-485X-NYC-ABATEMENTdoes_not_apply
Qualifying condition
RPTL §485-x Affordable Neighborhoods for New Yorkers tax abatement is statutorily limited to NYC. Yonkers is not NYC.
Source
NY Real Property Tax Law §485-x.
Effect
485-x abatement not available in Yonkers. (Yonkers operates its own IDA-issued PILOT framework separately.)

Adopted building codes

Statewide except NYC

IBC
2018
IRC
2024
NEC
2020
IFC
2018
IECC (Residential)
2018
IECC (Commercial)
2018

Click a code label to open its state-by-state adoption atlas.

Amendment history

DateKindCitation
2022-06-14amendment effectiveArticle XX (Ludlow L-MX) added by G.O. No. 12-2022 | kind_raw=amendment
2019-12-01supplement effectiveSupp 29, Dec 2019 (Table 43-3 attachment vintage) | kind_raw=supplement
2019-03-05amendment effectiveTable 43-3 (Nonresidential) amended by Ord. No. 1-2019 | kind_raw=amendment
2011-11-22amendment effectiveArticle XVIII (Downtown D-MX) added | kind_raw=amendment
2009-10-27amendment effectiveTable 43-3 amended by G.O. No. 7-2009 | kind_raw=amendment
2009-05-19amendment effectiveTable 43-3 amended by G.O. No. 3-2009 | kind_raw=amendment
2004-10-12amendment effectiveTable 43-3 amended by G.O. No. 6-2004 | kind_raw=amendment
2000-09-19adoptionChapter 43 preamble; Ordinance No. 4-2000

Quirks & notes

  • S-{nnn} naming convention encodes minimum LOT WIDTH in feet, NOT lot size in 1,000s sf. S-200 = 200 ft minimum lot width with 20,000 sf min lot; S-100 = 100 ft / 10,000 sf; S-75 = 75 ft / 7,500 sf; S-60 = 60 ft / 6,000 sf; S-50 = 50 ft / 5,000 sf.
  • Three districts (A, BA, C) use a STREET-WIDTH MULTIPLIER for height: max permitted height = 1.5 × width of fronting street right-of-way (footnotes 1 and 3). The I District uses 2 × street width (footnote 6). Parcel-specific capacity therefore depends on fronting street ROW — no single numeric height for these districts.
  • Density metric is min_lot_area_per_family (sf per dwelling unit), NOT du/ac. MF densest in M District (800 sf/DU), then A District (no per-family minimum — FAR + height + coverage govern), then MG (1,000 sf/DU).
  • Yonkers code uses 'family' to mean 'dwelling unit' in Table 43-3 (multifamily minimum lot area per family = sf per DU).
  • 'Designated development site' provisions in CB, DW, and GC Districts remove rear-yard requirement, lift coverage to 100%, lift FAR (CB to 6.00, DW to 4.50, GC to 9.00 with 220 ft height ceiling) and lift CB height to 400 ft.
  • B and BA Districts have partial-mixed-use coverage rule (footnote 4): residential floors limited to 40% coverage, nonresidential floors to 70%; if first floor only is nonresidential, 70% limited to ≤20 ft above street, 40% above.
  • Side yard in B, BA, and I Districts may be 0 ft, with 5 ft minimum when abutting a residential district (footnote 5).
  • FAR step-down rule for SF residential (footnote 5): portion of lot exceeding the district's minimum lot size is calculated at 0.67 × the base FAR (e.g., S-100 base FAR 0.56, excess area at 0.38).
  • Downtown D-MX (Article XVIII, added 2011-11-22) and Ludlow L-MX (Article XX, added 2022-06-14 via G.O. No. 12-2022) are mixed-use districts established outside the main Table 43-3 — they have their own bulk/use standards by reference. L-MX provides incentive height bonus from 65 ft base to 100 ft for buildings providing on-site commuter parking near the Ludlow Metro-North station.
  • Chapter 45 (Historic and Landmarks Preservation, adopted 1991-08-27 by G.O. No. 17-1991) is a separate chapter from Chapter 43 Zoning — Landmarks Preservation Board issues certificates of appropriateness for designated landmarks and properties in historic districts. 2005 Historic Design Guidelines and 2008-06-06 Demolition Delay Executive Order layer on top.
  • Yonkers is in Westchester County, has Hudson River frontage, and is within the 13-county Hudson River Valley Greenway region; Greenway participation is voluntary. Yonkers' Hudson River shoreline is within the NY Coastal Area subject to State CMP consistency review.
  • Yonkers (population 211,569 per Census 2020) is BELOW the MDL §26 jurisdiction threshold of 325,000 — Multiple Dwelling Law does NOT apply (only NYC, Buffalo, and Rochester are MDL-jurisdiction cities in 2026).
  • Yonkers is NOT NYC — RPTL §485-x abatement, RPTL §467-m office conversion, MDL §26(3) >12.0 FAR pathway, and NYC City of Yes ADU legalization are all NYC-only and do not apply.
  • Multiple article-level provisions (supplementary use/dimensional, special use permits, affordable housing, signs, stormwater) live in Chapter 43 Articles VI–XIX — not exhaustively extracted in this pass due to Cloudflare gating on ecode360 article pages.
  • Original v1 profile (date_researched 2026-04-08) was 100% FABRICATED at the district-roster level: it listed R1, R2, R2A, R3, R4, R5, R6, R7, R-MU, C1, C2, C3, CBD, C-MU, I1, I2, IP — none of which exist in Yonkers Chapter 43. Yonkers uses S-{nnn}/T/MG/M/A and B/BA/CB/BR/OL/CU/CA/DW/GC/CM/C/IP/I letter-codes per Table 43-3 (Supp 29, Dec 2019). v1 listed Chapter 201 — actual chapter is 43.

Formulas

Definitions

height
Maximum building height in feet (and/or stories), measured per Chapter 43 Definitions (Article II). Several districts use street-width multipliers (A/BA/C: 1.5x street ROW; I: 2x street ROW) per Table 43-3 footnotes.
lot_coverage
Maximum percentage of lot covered by buildings, per Table 43-3 'Building coverage'.
far
Floor area ratio: gross floor area divided by lot area, per Table 43-3.
du_ac
min_lot_area_per_family
Average lot area per dwelling unit, in sf per family — Yonkers' density metric in lieu of du/ac (Table 43-3 'Average lot area per family').
setback_front_ft
Front yard depth in feet, from front lot line to nearest building face.
setback_side_ft
Side yard, expressed as 'one yard / both yards' minimums (e.g. 6/15).
setback_rear_ft
Rear yard depth in feet, from rear lot line to nearest building face.
parking
Off-street parking minimums are by use type (Chapter 43 Article XI), not by district — not encoded per district in this profile.

Capacity calculations

max_footprint_sf
lot_area_sf * lot_coverage
max_gfa_sf
lot_area_sf * far
max_units_residential
lot_area_sf / min_lot_area_per_family_sf (where 'family' = dwelling unit per Table 43-3)
note
Yonkers controls multifamily density via min_lot_area_per_family (sf/DU) and FAR — NOT du/ac. Designated-development-site provisions in CB/DW/GC remove rear-yard, lift coverage to 100%, and lift FAR to 6.0 (CB) or higher on case-by-case basis.

Massing explorer

Interactive 3D comparison across every district. Drag to orbit, scroll to zoom, use the slider to walk districts, and toggle applicable overlays in the right-side panel.

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District Category Height FAR Coverage Setbacks Parking Density Min lot Overlays

Sources & references

Citations
  1. [1] Table 43-3 (Residential)
  2. [2] Table 43-3 (Residential)
  3. [3] Table 43-3 (Residential)
  4. [4] Table 43-3 (Residential)
  5. [5] Table 43-3 (Residential) — 2.5 stories or 35 ft; min height for SF/2F = 1 story or 15 ft per footnote 2
  6. [6] Table 43-3 (Residential)
  7. [7] Table 43-3 (Residential)
  8. [8] Table 43-3 (Residential)
  9. [9] Table 43-3 (Residential)
  10. [10] Table 43-3 (Residential)
  11. [11] Table 43-3 (Residential)
  12. [12] Table 43-3 (Residential)
  13. [13] Table 43-3 (Residential)
  14. [14] Table 43-3 (Residential)
  15. [15] Table 43-3 (Residential)
  16. [16] Table 43-3 (Residential)
  17. [17] Table 43-3 (Residential)
  18. [18] Table 43-3 (Residential)
  19. [19] Table 43-3 (Residential)
  20. [20] Table 43-3 (Residential)
  21. [21] Table 43-3 (Residential)
  22. [22] Table 43-3 (Residential)
  23. [23] Table 43-3 (Residential)
  24. [24] Table 43-3 (Residential)
  25. [25] Table 43-3 (Residential)
  26. [26] Table 43-3 (Residential)
  27. [27] Table 43-3 (Residential)
  28. [28] Table 43-3 (Residential)
  29. [29] Table 43-3 (Residential)
  30. [30] Table 43-3 (Residential)
  31. [31] Table 43-3 (Residential)
  32. [32] Table 43-3 (Residential)
  33. [33] Table 43-3 (Residential)
  34. [34] Table 43-3 (Residential)
  35. [35] Table 43-3 (Residential)
  36. [36] Table 43-3 (Residential)
  37. [37] Table 43-3 (Residential)
  38. [38] Table 43-3 (Residential)
  39. [39] Table 43-3 (Residential) — 5,000 sf for one- and two-family dwellings
  40. [40] Table 43-3 (Residential)
  41. [41] Table 43-3 (Residential)
  42. [42] Table 43-3 (Residential)
  43. [43] Table 43-3 (Residential)
  44. [44] Table 43-3 (Residential)
  45. [45] Table 43-3 (Residential)
  46. [46] Table 43-3 (Residential)
  47. [47] Table 43-3 (Residential)
  48. [48] Table 43-3 (Residential)
  49. [49] Table 43-3 (Residential)
  50. [50] Table 43-3 (Residential)
  51. [51] Table 43-3 (Residential)
  52. [52] Table 43-3 (Residential)
  53. [53] Table 43-3 (Residential) — MF column blank in Supp 29 — 5,000 sf single/two-family value applies
  54. [54] Table 43-3 (Residential)
  55. [55] Table 43-3 (Residential)
  56. [56] Table 43-3 (Residential)
  57. [57] Table 43-3 (Residential)
  58. [58] Table 43-3 (Residential)
  59. [59] Table 43-3 (Residential)
  60. [60] Table 43-3 (Residential)
  61. [61] z Table 43-3 footnote 3
  62. [62] Table 43-3 (Residential)
  63. [63] Table 43-3 (Residential)
  64. [64] Table 43-3
  65. [65] Table 43-3 footnote 5
  66. [66] Table 43-3
  67. [67] Table 43-3
  68. [68] Table 43-3 (Nonresidential) — Nonresidential side: --/35
  69. [69] Table 43-3 footnote 4
  70. [70] Table 43-3
  71. [71] Table 43-3
  72. [72] Table 43-3 footnote 5
  73. [73] Table 43-3
  74. [74] z Table 43-3 footnote 1
  75. [75] Table 43-3 footnote 4
  76. [76] Table 43-3
  77. [77] Table 43-3 Nonresidential
  78. [78] Table 43-3 (Residential row, '--/504')
  79. [79] Table 43-3 (Residential)
  80. [80] Table 43-3 footnote 4 + 8
  81. [81] Table 43-3 Nonresidential
  82. [82] Table 43-3 Nonresidential
  83. [83] Table 43-3 Nonresidential
  84. [84] Table 43-3 Nonresidential
  85. [85] Table 43-3 Nonresidential ('--/48')
  86. [86] Table 43-3 Nonresidential
  87. [87] Table 43-3 Nonresidential
  88. [88] Table 43-3 Nonresidential
  89. [89] Table 43-3 Nonresidential
  90. [90] Table 43-3 Nonresidential
  91. [91] Table 43-3 Nonresidential
  92. [92] Table 43-3 Nonresidential ('3/45') — 3 stories / 45 ft
  93. [93] Table 43-3 Nonresidential
  94. [94] Table 43-3 Nonresidential
  95. [95] Table 43-3 Nonresidential
  96. [96] Table 43-3 Nonresidential
  97. [97] Table 43-3 Nonresidential
  98. [98] Table 43-3 Nonresidential
  99. [99] Table 43-3 Nonresidential ('3/39') — 3 stories / 39 ft
  100. [100] Table 43-3 Nonresidential
  101. [101] Table 43-3 Nonresidential
  102. [102] Table 43-3 Nonresidential
  103. [103] Table 43-3 Nonresidential
  104. [104] Table 43-3 Nonresidential
  105. [105] Table 43-3 Nonresidential
  106. [106] Table 43-3 Nonresidential ('3/39')
  107. [107] Table 43-3 Nonresidential
  108. [108] Table 43-3 Nonresidential
  109. [109] Table 43-3 Nonresidential
  110. [110] Table 43-3 Nonresidential ('5/66²')
  111. [111] Table 43-3 Nonresidential
  112. [112] Table 43-3 Nonresidential
  113. [113] Table 43-3 Nonresidential ('20⁹')
  114. [114] Table 43-3 Nonresidential ('--/100²')
  115. [115] Table 43-3 Nonresidential
  116. [116] Table 43-3 Nonresidential
  117. [117] Table 43-3 Nonresidential
  118. [118] Table 43-3 Nonresidential
  119. [119] Table 43-3 Nonresidential
  120. [120] Table 43-3 Nonresidential
  121. [121] Table 43-3 Nonresidential ('2/35') — 2 stories / 35 ft
  122. [122] Table 43-3 Nonresidential
  123. [123] Table 43-3 Nonresidential
  124. [124] Table 43-3 Nonresidential
  125. [125] Table 43-3 Nonresidential
  126. [126] z Table 43-3 footnote 1
  127. [127] Table 43-3 Nonresidential
  128. [128] Table 43-3 Nonresidential
  129. [129] Table 43-3 Nonresidential
  130. [130] Table 43-3 Nonresidential
  131. [131] Table 43-3 Nonresidential
  132. [132] Table 43-3 Nonresidential — 175,000 sf ≈ 4.0 acres — largest minimum lot in Yonkers
  133. [133] Table 43-3 Nonresidential ('2/35') — 2 stories / 35 ft
  134. [134] Table 43-3 Nonresidential
  135. [135] Table 43-3 Nonresidential
  136. [136] Table 43-3 footnote 5
  137. [137] Table 43-3 Nonresidential
  138. [138] z Table 43-3 footnote 6
  139. [139] Table 43-3 Nonresidential
  140. [140] Table 43-3 Nonresidential

Research status

Publication gates

primary url presentpassedhttps://ecode360.com/15113784 (ecode360 — non-aggregator codifier; verified live in spec-01 web_search)
no aggregator citedpassedScan clean: no zoneomics, steadily, siteplanguide, sitedesignguide, siteplancreator, propwire, zonara, unzoned references in record. Source authority is City of Yonkers Chapter 43 via ecode360, and Westchester County GIS for district-roster cross-check, and city-hosted PDF for Table 43-3 verbatim values.
confidence tags full formpassedAll confirmed dimensional fields carry c-prefix citation to Table 43-3 (Supp 29, Dec 2019) with footnote references where applicable (footnotes 1, 2, 3, 4, 5, 6, 8, 9)
overlays have parameters trigger confidencepassedAll 7 overlays (D-MX, L-MX, HLD/Ch.45, FEMA SFHA, Coastal LWRP, SEQRA procedural, Supplementary Articles) have non-empty parameters, geographic_trigger, status, and citation. Two carry status:partial with explicit what_is_confirmed / what_is_missing pairs; one carries status:not_captured with not_captured_reason.
preempt section city specificpassed15 NY-level preemption laws evaluated with city-specific qualifying_condition_checked (Yonkers population 211,569, downstate, Westchester County, MTA Metro-North area, Hudson River frontage, in 13-county Greenway region). NY not in gate-5 active-preemption state list (CA/TX/FL/OR/WA/CO/MN/MT/UT/AZ/NJ/CT) — substantive evaluation performed anyway.

Data quality

80%completeness110 confirmed8 partial
Documented gaps
  • D-MX and L-MX dimensional standards not extracted from Article XVIII / Article XX text (ecode360 Cloudflare-gated; Wayback CDX 503'd this pass)
  • Specific FEMA freeboard value in Yonkers local floodplain ordinance not captured
  • Yonkers LWRP DOS-approval status not verified against DOS LWRP database this pass
  • Yonkers Pro-Housing Community certification status not verified against HCR live dashboard this pass
  • Westchester County RPL Article 12-D opt-out status not verified against county legislature minutes this pass
  • Article-level supplementary overlays (affordable housing, sign, stormwater, planned-development) not exhaustively enumerated this pass
  • M District multifamily minimum lot SF and A District multifamily lot-area-per-family appear blank in Supp 29 Dec 2019 Table 43-3 — flagged with status:confirmed for null values where the source itself is null
  • CA District full district name not verified against Article III roster (column header in Nonresidential Table 43-3 first page lists 'CA' between A and Cu)

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