The rules pack

Residence districts

Commercial districts

Paired and mixed districts

Manufacturing districts

Commercial overlays

Other codes

Open questions

Points where the text is ambiguous or sources disagree. None is resolved by guessing.

• ZR 24-111 caps community facility floor area in R1 and R2 districts at "the floor area permitted for residential uses by the applicable district regulations", except for uses that need a permit under ZR 73-11, 73-13 or 73-18 or a bulk modification under ZR 74-902. The figures therefore use 0.75 on a standard zoning lot and 1.00 on a qualifying residential site, or the range between them while that status is unsettled, whereas MapPLUTO's community facility FAR field shows the ZR 24-11 table value of 1.00 for R1 and R2 lots. No site on the ledger is in an R1 or R2 district.
• ZR 24-112(b) limits all zoning lots in R10 districts, except R10A and R10X, in Manhattan Community District 7 to a floor area ratio of 10.0, but it is written as a modification of the community facility ratios of ZR 24-11. Whether it also caps the 12.00 residential ratio for qualifying affordable or senior housing there is unclear; the figures use 12.00. No site on the ledger is in an R10 district in Manhattan Community District 7.
• ZR 21-14 applies R10 rules to R10H "unless otherwise specified", but ZR 23-434 (height and setback modifications for eligible sites) and ZR 23-731 (optional sky exposure plane buildings) apply only to districts "without a letter suffix". Whether they reach R10H bears on height and setback, not on the floor area figures, and no site on the ledger is in R10H.
• ZR 23-721 makes the optional Brooklyn Community District 12 provisions available in "R5 and R6 Districts without a letter suffix", but the ZR 23-722 floor area table lists only R5 (1.65 on a corner lot, 1.80 on an interior or through lot), so R6 appears to get no floor area change and to stay under ZR 23-22. The figures set these optional provisions aside, and no site on the ledger is in that part of Community District 12.
• MapPLUTO's residential FAR fields do not apply ZR 23-242, which raises the standard FAR in R1 through R3 districts south of Avenue H in Brooklyn Community Districts 11, 14 and 15 to 1.0; MapPLUTO shows 0.75 there. The figures apply 1.0 in Community District 15, where MapPLUTO places every R1 to R3 lot south of Avenue H, and show a range from 0.75 to 1.0 in Community District 14, which Avenue H crosses (MapPLUTO shows no R1 to R3 lots in Community District 11). Site 95 takes 1.0 on its R3-1 portion.
• Whether a zoning lot in an R1 through R5 district is a qualifying residential site under ZR 12-10, and so takes the higher ZR 23-21 ratio, is settled from MapPLUTO's transit zone field, lot area and mapped street widths where these suffice. Frontage on the short dimension of a block, community facility floor space existing on December 5, 2024, and qualifying senior housing are not shown in public data, so where one of them could decide the test the figure is a range, as on most ledger sites in R3 to R5 districts.
• These are base-district values; special purpose district rules replace them on ledger sites where the district's chapter changes floor area (Lower Manhattan, Jerome Corridor, Downtown Brooklyn, Inwood, Harlem River Waterfront, Gowanus, Coney Island, Coastal Risk 4 and 5, Long Island City, Southern Hunters Point, College Point and Willets Point), and the other special districts on the ledger do not change floor area on their sites. Waterfront Access Plan rules such as ZR 62-361 (plan BK-1, Brooklyn Community District 1) and approved large-scale developments are not applied; no residential ledger site is on a waterfront block in that plan, and site pages note where a large-scale permit governs. ZR 23-06, which changes the bulk rules on NYCHA land whose disposition needs HUD approval under Section 18, is named in a site flag rather than applied, because public data do not show whether Section 18 governs; sites 36, 73, 119 and 121 include NYCHA land in R6 to R8.
• C4-5D community facility FAR: ZR 33-123 lists C4-5D at 4.20, but MapPLUTO 26v2 reports 4.66, the R7D value in ZR 24-11, on C4-5D lots. No provision was found that applies 24-11 to C4-5D, so the rules pack uses 4.20, marked as not yet verified; no site on the ledger is in C4-5D.
• M1-5A: the ZR 43-132 table gives 6.50, but MapPLUTO 26v2 reports 5.0 in its commercial, community facility and manufacturing FAR fields on M1-5A lots, and 5.0 commercial and manufacturing FAR on M1-5A/R8 lots. The rules pack uses 6.50, marked as not yet verified. No figure on the ledger depends on it: the M1-5A/R8 sites (20 and 77) take their residential and community facility ratios from the Special Long Island City District.
• Community facility FAR in M1 districts with an A suffix: ZR 43-132 sets one ratio "for all permitted uses", while ZR 43-122, the M1 community facility table, lists only unsuffixed M1 districts; ZR 43-12 names both 43-122 and 43-13 as exceptions, and under ZR 11-25 a section that lists a district also covers its suffixed forms unless it lists them separately. The rules pack uses the 43-132 value, which MapPLUTO matches in M1-2A, M1-4A, M1-6A and M1-9A but not on the single M1-3A lot (6.5 against 4.00). No ledger site is in a standalone M1 A-suffix district; the paired ones on the ledger take community facility FAR from their residence district (ZR 123-621).
• C6-1G community facility FAR: a full-text search of the complete Zoning Resolution (PDF of September 21, 2026) finds 'C6-1G' only in the ZR 11-122 list of districts, so under ZR 11-25 the C6-1 ratio of 6.50 in ZR 33-123 applies. MapPLUTO 26v2 reports 0 on C6-1G lots while giving C6-2G, C6-2M and C6-4M their base values, which looks like a gap in its lookup. No site on the ledger is in C6-1G.
• Legacy C7: ZR 33-06 treats C7 districts mapped before June 6, 2024 as C7-1 for the bulk rules of Article III, Chapter 3, so the rules pack gives the 75 lots MapPLUTO codes 'C7' a community facility FAR of 2.00. MapPLUTO reports 0 for C7 lots but 2.0 for its one C7-1 lot, so it appears not to apply 33-06; no site on the ledger is in a C7 district.
• C5-P in the Special Midtown District: ZR 81-241 sets the residential FAR at 8.0, or 9.6 for qualifying affordable or senior housing, and ZR 81-211 row A gives a basic maximum of 8.0 for non-residential or mixed buildings; the rules pack uses these, marked as not yet verified. MapPLUTO 26v2 shows 10 residential, 12 affordable residential and 10 community facility FAR (its commercial 8 agrees), apparently the C5 district's R10 equivalent and C5-2 values without the Special Midtown District rules. No site on the ledger is in C5-P.
• C5-3.5 and C6-7.5 are established in ZR 11-122 and assigned to Article VIII, Chapter 1 by ZR 31-20, but neither appears in the ZR 81-021 table of applicable districts or the ZR 81-211 floor area table, and neither is mapped in MapPLUTO 26v2. The rules pack has no values for them.
• C4-7A appears in the district lists of ZR 33-12, 34-112 (with R10A as its residential equivalent) and 35-35, but it is not established in ZR 11-122 and is not mapped, so the rules pack has no entry for it.
• ZR 34-24 refers to 'Section 36-64' for special height and setback provisions for certain areas and to 'Section 35-71, inclusive' for sky exposure plane buildings, but 36-64 concerns loading berths on zoning lots divided by district boundaries and 35-71 is 'Planting'. The intended references appear to be 35-64 (Special Provisions for Certain Areas) and 35-81 (Special Provisions for Sky Exposure Plane Buildings); these govern height and setback, not the floor area figures.
• R6 and its equivalents (C4-2, C4-3, C6-1A, and C1 or C2 overlays within R6): MapPLUTO 26v2 gives a residential FAR of 2.43, the ZR 23-732 maximum for the optional sky exposure plane building, while the figures follow ZR 23-22 (3.00 within 100 feet of a wide street, 2.20 elsewhere) and use 2.43 only on a waterfront block (ZR 62-322). The optional regime is barred in C4-2 in Staten Island and in Limited Height Districts (ZR 35-811) and in Special Mixed Use Districts (ZR 123-61), where M1-2/R6 is mapped, so in those places MapPLUTO's 2.43 overstates the ratio except on waterfront blocks. Sixteen ledger sites include R6 land, and site 26 includes M1-4/R6 in MX-21.
• C1 and C2 overlays: MapPLUTO computes its FAR fields from the underlying residence district only, so its commercial FAR is 0 on overlay lots and its community facility FAR is the ZR 24-11 residence value. The figures use the ZR 33-121 Column B ratio on the overlaid part of a lot, which differs from 24-11 in R1 and R2 (0.50 against 1.00) and in R3-2 (1.60 against 1.00), so overlay values cannot be checked against MapPLUTO; on the ledger this changes site 96, which has a C1-1 overlay within R3-2.
• C6-4.5 in the Special Downtown Brooklyn District (93 lots): ZR 81-021 applies C6-4 rules, and with them the R10 equivalent, to C6-4.5 only within the Special Midtown District, and ZR 101-21 sets only the 12.0 commercial and community facility FAR for C6-4.5 in Downtown Brooklyn. No provision examined states the residential equivalent there; the rules pack uses R10, as MapPLUTO does, and no site on the ledger is in C6-4.5.
• ZR Appendix B (last amended 11/12/2025) omits the Special Atlantic Avenue Mixed Use District (AAM, Article XIV, Chapter 6, adopted 5/28/2025), which the MapPLUTO 26v2 data dictionary also omits, and MX-30 (Kingsbridge Heights, listed in ZR 123-90); it also prints the symbols 'MID' and '125' where MapPLUTO uses 'MiD' and '125th'. Sites 4 and 5 are in AAM and site 74 is in MX-30; the rules pack takes chapter numbers from the article tables of contents and ZR 11-122, so their figures are not affected.
• One MapPLUTO 26v2 lot is coded 'M1-3/R8' with no special purpose district, although under ZR 11-121 and 123-10 paired districts are mapped only within special purpose districts. It is likely a boundary or attribution error in MapPLUTO; no site on the ledger is affected.
• Special purpose district rules on paired M1 and residence districts are applied where a ledger site needs them: ZR 139-211 (Gowanus) on M1-4/R7-2 at sites 59 to 63, and ZR 117-321 (Long Island City) on M1-5A/R8 at sites 20 and 77. Others are not modeled, among them ZR 117-221 and 117-631 (Long Island City), 138-21 (East Harlem Corridors), 127-21 (Flushing Waterfront) and Article XIV, Chapter 3 (SoHo-NoHo), and no ledger site is in the areas they govern. ZR 146-211 (Atlantic Avenue) caps only the total FAR of buildings that mix residential and non-residential uses in M1A pairings, so the per-use figures for site 4 are unchanged.
• R1 through R5 districts and the commercial districts that take their residential rules (for example C3 and C3A, equivalent to R3-2 and R3A, and C4-1, equivalent to R5): MapPLUTO's affordable residential FAR field holds the ZR 23-21 ratio for qualifying residential sites (1.00 and 2.00 in these examples). That ratio depends on whether the zoning lot meets the qualifying residential site test of ZR 12-10 (lot area, transit zone, frontage, existing community facility space or qualifying senior housing) rather than on an affordable housing program, so the figures label it as the maximum on a qualifying residential site; 16 ledger sites include R3 to R5 land.