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310 Spring Street, Manhattan, NY 10013

BBL 1005940034 (Borough 1, Block 594, Lot 34) · BIN 1010295 · Last updated:

Summary · as of October 31, 2026

310 Spring Street (Manhattan, NY 10013; tax lot BBL 1005940034) is a 1-unit mixed-use building with apartments and ground-floor commercial space (building class S1: mixed-use: one-family home with one store or office), built around 1819, on a 1,875 sq ft lot zoned C6-2A. City tax records list the owner as UNITY ENVIRONMENTALCORP. The Department of Finance's final market value for tax year 2027 is $5,979,000. As of October 31, 2026, NYC Open Data shows one active DOB violation and one OATH ticket with an unpaid balance. There were two 311 requests in the past 12 months and no HPD complaints since 2019. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)

Owner of record
UNITY ENVIRONMENTALCORP
Building class
S1 · Mixed-use: one-family home with one store or office
Year built · units
1819 · 1 res.
Lot area · zoning
1,875 sq ft · C6-2A
Market value (DOF)
$5,979,000 FY2027
Last priced deed
—
BBL
1005940034
BIN
1010295

How to cite: NYC Property Facts, “310 Spring Street, Manhattan, NY 10013 (BBL 1005940034)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/manhattan/310-spring-street-1005940034. Source: NYC Open Data.

Lot & building

Basic facts about the tax lot and building from the city’s PLUTO database.

Owner (as listed by the city)
UNITY ENVIRONMENTALCORPThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
Building class
S1 – Mixed-use: one-family home with one store or officeThe Department of Finance’s category for what kind of building this is.
Land use
Mixed residential & commercialCity Planning’s broad category of how the lot is used.
Year built
1819Often an estimate for older buildings.
Floors
3
Units
1 residential / 2 totalResidential units are apartments; total includes stores and offices.
Buildings on lot
1
Lot size
1,875 sq ft (25 ft × 75 ft)
Building floor area
3,175 sq ft (incl. 1,575 sq ft commercial)
Zoning
C6-2AThe zoning district sets what can be built and used here. Commercial district.
Built vs. allowed density (FAR)
1.69 built / 6.02 max residentialFloor Area Ratio = building floor area ÷ lot area. If built FAR is below the maximum, zoning may allow more floor area (other rules apply).
Landmark
INDIVIDUAL LANDMARK
Identifiers
BBL 1005940034 (Borough 1, Block 594, Lot 34) · BIN 1010295BBL identifies the tax lot; BIN identifies each building (from DOB/HPD/footprint records).

Source: PLUTO (Dept. of City Planning) — city dataset updated 2026-08-24; data as of 2026-11-04; Building Footprints — city dataset updated 2026-10-25; data as of 2026-11-01

Tax assessment

How the Department of Finance values this lot for property tax.

Market value (tax year 2027, final roll)
$5,979,000The Department of Finance’s estimate of value for tax purposes. It is not an appraisal and is often far from the sale price.
Assessed value
$358,740The portion of market value that taxes are calculated on (capped by law for small homes).
Taxable value (final)
$116,473Assessed value minus any exemptions.
Tax class
Tax class 1 – 1–3 family homes (and some small mixed-use / vacant lots)
Tax yearRollMarket valueAssessed valueTax class
2027Final$5,979,000$358,7401
2026Final$7,034,000$422,0401
2025Final$7,752,000$465,1201

Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-11-04

Sales & deed history 2

Deeds recorded with the City Register (ACRIS). A deed transfers ownership. A $0 or very low price usually means a transfer between related parties, an estate, or a refinance-related transfer, not a market sale. This is not a title search; mortgages, liens and other documents are not shown.

DateTypePriceSeller (grantor)Buyer (grantee)Doc ID
1989-01-23DEED$0 / not statedMass, Theodore; Mass, NormaUnity EnvironmentalcorpFT_1800000294780
1967-05-05DEED$0 / not statedMccarthy, Nora F ExMass, Theodore; Mass, NormaFT_1200008674020

Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-11-04; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-11-04; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-11-04

DOB job filings 0 open of 0

A “job” is an application to the Department of Buildings to do construction work. A job marked Permitted, not signed off had a work permit issued but the city has no record of final sign-off (inspection/completion). Old jobs left in this state are common and appear in buyer and lender due diligence; the work may or may not have been done.

No records found in this dataset for this lot.

Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-11-01; data as of 2026-11-04; DOB Job Application Filings (BIS) — city dataset updated 2026-10-30; data as of 2026-10-31

Work permits 0

Individual permits issued under DOB jobs (one job can have several permits, e.g. plumbing and construction). Permit expiration alone does not mean the job was completed or signed off.

No records found in this dataset for this lot.

Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-11-02; data as of 2026-11-04; DOB Permit Issuance (BIS) — city dataset updated 2026-10-31; data as of 2026-10-31

DOB violations 1 active of 5

Violations issued by the Department of Buildings for building-code or zoning conditions. Active means DOB has not recorded the violation as resolved or dismissed. Many active DOB violations are old (e.g. elevator or boiler inspection paperwork).

StatusIssuedTypeDescriptionNumber
Active
V-DOB VIOLATION - ACTIVE
1997-07-17C-CONSTRUCTION OTHER OPTIONALV071797C02B01
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2002-03-26LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*032602LL629101648
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2001-02-27LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*022701LL629101608
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2000-02-07LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*020700LL629101545
Resolved/dismissed
VPW*-VIOLATION UNSERVED ECB-WORK WITHOUT PERMIT-DISMISSED
1997-07-17C-CONSTRUCTION OTHER OPTIONALVPW*071797C02B01

Source: DOB Violations — city dataset updated 2026-11-02; data as of 2026-11-04

ECB violations (DOB) 0 active of 1

DOB violations that go to a hearing at OATH (formerly the Environmental Control Board) and can carry fines. Active or Resolved follows the DOB violation status field. The hearing status is about the hearing and its penalty: written off means the city stopped collecting the fine, not that the condition was corrected. A balance due is a fine the city says is unpaid.

StatusIssuedSeverityWhat it was forPenalty / paid / balanceECB #
Resolved
Hearing: CURED/IN-VIO · Certification: CURE ACCEPTED
1989-10-30Non-HazardousWORK WITHOUT A PERMIT WORK NTOED CREATING A NEW BATHROOM WITH NEW METAL STUDS AND SHEETROCK PARTITIONS AND NEW PLUMBING REMEDY STOP ALL WORK UNTIL A PERMIT AND APPROVALS HAVE BEEN OBTAINED$0 / $0 / $034032535Y

Source: DOB ECB Violations — city dataset updated 2026-10-31; data as of 2026-11-04

OATH tickets (all agencies) 1 unpaid of 137

Summonses heard at the Office of Administrative Trials and Hearings, from agencies like Sanitation, Buildings, Fire and Health, linked to this lot’s block and lot. Default means the respondent did not appear at the hearing, which typically results in the maximum penalty. Tickets may be issued to tenants or businesses at the address, not just the owner. DOB ECB tickets appear here too.

StatusDateAgencyChargeRespondentImposed / paid / balanceTicket #
Unpaid balance Default
DEFAULTED · DEFAULTED
2026-07-10Sanitation OthersSTORAGE OF RECEPTACLES PLACED OUT PRIOR TO 8PM WITHOUT A RECEPTACLEUNITY ENVIRONMENTALCORP$80 / $0 / $80049854517H
Hearing pending
NEW ISSUANCE
2026-08-07Sanitation OthersIMPROPER RECEPTACLE FAILURE TO CONTAINERIZE - RESIDENTIAL 1STUNITY ENVIRONMENTALCORP$50 / $0 / $50049949235L
No balance due
PAID IN FULL · SETTL IN-VIO
2022-08-02Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETUNITY ENVIRONMENTALCORP$300 / $203 / $0047504302H
No balance due
PAID IN FULL
2021-06-04Sanitation OthersSTORAGE OF RECEPTACLESUNITY ENVIRONMENTALCORP$100 / $100 / $0047102995H
No balance due
PAID IN FULL · SETTL IN-VIO
2019-12-18Sanitation OthersSTORAGE OF RECEPTACLESUNITY ENVIRONMENTAL CORP$300 / $218 / $00209916383
No balance due
PAID IN FULL · SETTL IN-VIO
2019-11-20Sanitation OthersSTORAGE OF RECEPTACLESUNITY ENVIRONMENTAL CORP$300 / $221 / $00209919885
No balance due
PAID IN FULL · SETTL IN-VIO
2019-09-06Sanitation OthersSTORAGE OF RECEPTACLESUNITY ENVIRONMENTAL CORP$300 / $224 / $00208777499
No balance due
PAID IN FULL · SETTL IN-VIO
2019-07-29Sanitation OthersSTORAGE OF RECEPTACLESUNITY ENVIRONMENTAL CORP$300 / $224 / $00208771393
No balance due
PAID IN FULL · SETTL IN-VIO
2019-06-14Sanitation OthersSTORAGE OF RECEPTACLESUNITY ENVIRONMENT ALCORP$300 / $228 / $00206860547
No balance due
PAID IN FULL · SETTL IN-VIO
2019-06-12Sanitation OthersSTORAGE OF RECEPTACLESUNITY ENVIRONMENTAL CORP$300 / $228 / $00206863241
No balance due
PAID IN FULL · SETTL IN-VIO
2019-05-10Sanitation OthersSTORAGE OF RECEPTACLESUNITY ENVIRONMENTAL ALCORP$300 / $230 / $00206869850
No balance due
PAID IN FULL · SETTL IN-VIO
2019-03-20Sanitation OthersSTORAGE OF RECEPTACLESUNITY ENVIRONMENTAL CORP$300 / $231 / $00206863764

Showing 12 of 137 records. The API and the source dataset have the full list.

Source: OATH Hearings Division Case Status — city dataset updated 2026-11-02; data as of 2026-11-04

HPD registration & contacts

Owners of most rental buildings must register with the Department of Housing Preservation and Development each year and list an owner and managing agent.

No HPD registration found. Registration is required for buildings with 3 or more apartments (and for 1–2 family homes where neither the owner nor family lives there).

Source: HPD Multiple Dwelling Registrations — city dataset updated 2026-11-04; data as of 2026-11-04; HPD Registration Contacts — city dataset updated 2026-10-28; data as of 2026-11-04

HPD housing-code violations 0 open of 0

Violations HPD inspectors issued for conditions in residential buildings (heat, leaks, mold, pests, lead paint, etc.). Class letters show how serious: Class A – non-hazardous (HPD gives 90 days to correct); Class B – hazardous (30 days to correct); Class C – immediately hazardous (24 hours to correct for most conditions); Class I – information / order (e.g. orders to register, lead or other administrative orders). Open means HPD has not recorded the condition as corrected.

No records found in this dataset for this lot.

Source: HPD Housing Maintenance Code Violations — city dataset updated 2026-11-02; data as of 2026-11-04

HPD complaints 0

Complaints tenants or others made to HPD (usually via 311) about housing conditions, from 2019 onward. A complaint is not a violation; HPD may inspect and issue one.

No records found in this dataset for this lot.

Source: HPD Housing Maintenance Code Complaints and Problems — city dataset updated 2026-11-02; data as of 2026-11-04

311 requests (last 12 months) 2

Recent 311 service requests the city geocoded to this lot: noise, illegal parking, heat, sanitation and more. Anyone can file them, so they describe activity at or near the address, not necessarily the building itself.

OpenedAgencyComplaintStatusClosed
2025-12-05NYPDNoise - Commercial – Loud Music/PartyClosed2025-12-05
2025-12-05NYPDNoise - Residential – Loud Music/PartyClosed2025-12-05

Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-04; data as of 2026-11-04

Nearby properties

On Spring St

Same tax block (594)

All properties on Spring St, Manhattan · All of Manhattan 10013 (Tribeca-Civic Center)

Open-item counts as of October 31, 2026; each section lists its own dataset date. Machine-readable: JSON API · Markdown · Plain text · API & MCP docs