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40 Riverside Drive, Manhattan, NY 10023

BBL 1011850049 (Borough 1, Block 1185, Lot 49) · BIN 1031043 · Last updated:

Summary · as of October 31, 2026

40 Riverside Drive (Manhattan, NY 10023; tax lot BBL 1011850049) is an one-family home (building class A4: one-family city residence), built around 1898, on a 1,850 sq ft lot zoned R10A. City tax records list the owner as 40 RIVERSIDE TENANTS CORP. The Department of Finance's final market value for tax year 2027 is $18,552,000. As of October 31, 2026, NYC Open Data shows three DOB jobs with a permit issued but no sign-off, two active DOB violations 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
40 RIVERSIDE TENANTS CORP
Building class
A4 · One-family city residence
Year built · units
1898 · 1 res.
Lot area · zoning
1,850 sq ft · R10A
Market value (DOF)
$18,552,000 FY2027
Last priced deed
—
BBL
1011850049
BIN
1031043

How to cite: NYC Property Facts, “40 Riverside Drive, Manhattan, NY 10023 (BBL 1011850049)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/manhattan/40-riverside-drive-1011850049. 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)
40 RIVERSIDE TENANTS CORPThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
Building class
A4 – One-family city residenceThe Department of Finance’s category for what kind of building this is.
Land use
One- & two-family buildingsCity Planning’s broad category of how the lot is used.
Year built
1898Often an estimate for older buildings. Major alteration recorded: 1985, 2016.
Floors
5
Units
1 residential / 1 totalResidential units are apartments; total includes stores and offices.
Buildings on lot
1
Lot size
1,850 sq ft (32 ft × 53 ft)
Building floor area
9,465 sq ft
Zoning
R10AThe zoning district sets what can be built and used here. Residential district.
Built vs. allowed density (FAR)
5.12 built / 10.00 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).
Historic district
West End-Collegiate Historic DistrictExterior changes in a historic district need Landmarks Preservation Commission approval.
Identifiers
BBL 1011850049 (Borough 1, Block 1185, Lot 49) · BIN 1031043BBL 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 2026-11-02; 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)
$18,552,000The 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
$1,113,120The portion of market value that taxes are calculated on (capped by law for small homes).
Taxable value (final)
$954,000Assessed 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$18,552,000$1,113,1201
2026Final$21,326,000$1,279,5601
2025Final$17,466,000$1,047,9601

Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-11-02

Sales & deed history 11

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
1987-08-05DEED$0 / not statedSeroush, Natalia40 Riverside TenantscpFT_1850000208785
1986-02-07DEED$0 / not statedN.B.S. Develpmt Corp.Seroush, NataliaFT_1520000129852
1986-02-07DEED$0 / not statedSeroush, NataliaN.B.S. Devlpmt Corp.FT_1510000129851
1985-10-30DEED$0 / not statedSeroush, NataliaN.B.S. Development CorpFT_1270000119527
1985-10-30DEED$0 / not statedN.B.S. Development CorpSeroush, NataliaFT_1250000119525
1984-11-09DEED$0 / not statedSeroush, Babeck; Seroush, NataliaSeroush, NataliaFT_1180000078818
1984-01-11DEED$0 / not statedSeroush, Natalia; Seroush, BabeckN.B.S. Development Corp.FT_1160000051416
1984-01-11DEED$0 / not statedN.B.S. Development Corp.Seroush, Babeck; Seroush, NataliaFT_1150000051415
1983-05-27DEED$0 / not statedSeroush, BabeckSeroush, Natalia; Seroush, BabeckFT_1700000033470
1982-07-16DEED$0 / not statedSeroush, NataliaSeroush, BabeckFT_1680000013968
1981-12-16DEED$0 / not statedBaldwin Lg Indpndntschs; Riverside-Baldwin School; Emerson School Inc AkaSeroush, NataliaFT_1840008650784

Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-11-02; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-11-02; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-11-02

DOB job filings 3 open of 9

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.

StatusJob #TypeFiledEst. cost
Permitted, not signed off
Permit Entire · 2025-09-18
M00629658-I1
DOB NOW
Alteration CO2023-04-03$20,000
Permitted, not signed off
PERMIT ISSUED - ENTIRE JOB/WORK · 1991-04-09
100040242
BIS
A3 – Minor alteration (one type of work)1990-05-02—
Permitted, not signed off
PERMIT ISSUED - ENTIRE JOB/WORK · 1991-04-09
100040233
BIS
A3 – Minor alteration (one type of work)1990-05-02—
Not open
PLAN EXAM - DISAPPROVED · 2026-07-14
123920463
BIS
SC – Subdivision – condo2026-06-23—
Not open
Approved · 2025-09-18
M00629658-P2
DOB NOW
Alteration CO2025-09-10$20,000
Not open
Approved · 2025-04-12
M00629658-P1
DOB NOW
Alteration CO2025-04-09$20,000
Not open
SIGNED OFF · 2018-07-10
122490189
BIS
A1 – Major alteration (changes use, egress or occupancy)2015-08-12$20,000
Not open
SIGNED OFF · 2016-06-20
122385409
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2015-04-23$32,000
Not open
PLAN EXAM - DISAPPROVED · 1995-09-06
101115277
BIS
A1 – Major alteration (changes use, egress or occupancy)1995-08-24$2,000

Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-11-01; data as of 2026-11-02; DOB Job Application Filings (BIS) — city dataset updated 2026-10-30; data as of 2026-10-31

Work permits 9

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.

IssuedExpiresJob #WorkPermit status
2025-07-242026-07-24M00629658-I1
DOB NOW
General Construction
Application filed herewith for the conversion of a single family dwelling to a two family dwelling. Minor interior non-bearing partition removal and installat
Permit Issued
2025-04-142025-07-05M00629658-I1
DOB NOW
General Construction
Application filed herewith for the conversion of a single family dwelling to a two family dwelling. Minor interior non-bearing partition removal and installat
Permit Issued
2016-02-182017-02-17122490189
BIS
Plumbing / PlumbingISSUED (initial)
2015-12-042016-02-02122490189
BIS
AlterationISSUED (initial)
2015-05-202016-02-02122385409
BIS
Equipment work / Other / general constructionISSUED (initial)
1991-04-091991-12-31100040233
BIS
Construction equipment (scaffold, fence, shed) / Construction equipmentISSUED (renewal)
1991-04-091991-12-31100040242
BIS
Construction equipment (scaffold, fence, shed) / Construction equipmentISSUED (initial)
1991-04-091991-12-31100040233
BIS
Construction equipment (scaffold, fence, shed) / Construction equipmentISSUED (renewal)
1990-05-171991-04-10100040233
BIS
Construction equipment (scaffold, fence, shed) / Construction equipmentISSUED (initial)

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

DOB violations 2 active of 9

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
1997-01-13LL1081-LOCAL LAW 10/81 - ELEVATOR ELEVATOROPTIONALV011397LL108100983
Active
V-DOB VIOLATION - ACTIVE
1988-07-15E-ELEVATOR ELEVATORREQUIRED(51) CLEAN INSTALLATION (52) POST NAME OF ELEV. CO.'S NAME IN MOTOR ROOMV071588E1474I/5
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2017-01-03ACC1-(OTHER BLDGS TYPES) - ELEVATOR AFFIRMATION OF CORRECTION ELEVATORREQUIREDVIO ISSUED TO ELEVATOR - FAIL TO CORRECT DEFECTS ON 2015 CAT 1 INSP/TSTV*010317ACC102514
Resolved/dismissed
V*-DOB VIOLATION - Resolved
2011-05-24E-ELEVATOR ELEVATORREQUIREDV*052411E9027/383568
Resolved/dismissed
V*-DOB VIOLATION - Resolved
2007-12-14E-ELEVATOR ELEVATORREQUIREDV*121407E9011/229596
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1997-01-13LL1081-LOCAL LAW 10/81 - ELEVATOR ELEVATOROPTIONALV*011397LL108100983
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1989-09-20LANDMK-LANDMARK NONEV*092089LANDMK90-0149
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1989-02-10LANDMRK-LANDMARK NONEV*021089LANDMRKVIOL
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1989-02-10LANDMK-LANDMARK NONEV*021089LANDMK89-0464

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

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: DISMISSED · Certification: N/A - DISMISSED
1989-11-21Non-HazardousFAILURE TO MAINTAIN EXTERIOR CHIMNEY DEFECT IS BRICK CHIMNEY APPROX 10FT HIGH BY 8 FT WIDE COLLAPSED ONTO EXISTING ROOF. REMEDY PROVIDE SHORING FOR EXISTING ROOF AND REMOVE ALL LOSE BRICK AND DEBRIS AND MAKE$0 / $0 / $034032732N

Source: DOB ECB Violations — city dataset updated 2026-10-31; data as of 2026-11-02

OATH tickets (all agencies) 1 unpaid of 50

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
2023-11-15Pcs - DohmhFAIL TO ELIMINATE RODENT INFESTATION SHOWN BY ACTIVE RODENT SIGNS 1STMARK HOFFMAN$600 / $50 / $5500802860200
Hearing pending
NEW ISSUANCE
2026-09-19Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREET40 RIVERSIDE TENANTS CORP$50 / $0 / $50046996697Z
No balance due
PAID IN FULL
2026-08-15Sanitation OthersFAILURE TO BUNDLE NEWSPAPERS MAGAZINES CARDBOARD 9+ DWELLING UNITS40 RIVERSIDE TENANTS CORP$100 / $100 / $0049857749K
No balance due Default
PAID IN FULL · DEFAULTED
2026-03-12Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREET40 RIVERSIDE TENANTS CORP$300 / $300 / $0049623739P
No balance due
PAID IN FULL
2025-02-09Sanitation RecyclingSNOW,ICE DIRT ON SIDEWALKS40 RIVERSIDE TENANTS CORP$100 / $100 / $0048923358J
No balance due
PAID IN FULL
2025-01-13Pcs - DohmhFAIL TO ELIMINATE RODENT INFESTATION SHOWN BY ACTIVE RODENT SIGNS 2ND40 RIVERSIDE TENANTS CORP$600 / $600 / $00803341624
No balance due Default
PAID IN FULL · DEFAULTED
2024-12-05Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREET40 RIVERSIDE TENANTS CORP$80 / $80 / $0048705860J
No balance due Default
PAID IN FULL · DEFAULTED
2024-09-10Fire Department Of NycFIRE PROTECTION SYSTEMS40RIVERSIDE TENANTS CORP$1,000 / $1,000 / $0014145639Y
No balance due
PAID IN FULL · IN VIOLATION
2024-06-24Pcs - DohmhFAIL TO ELIMINATE RODENT INFESTATION SHOWN BY ACTIVE RODENT SIGNS 1ST40 RIVERSIDE TENANTS CORP$300 / $300 / $00803099359
No balance due
HEARING COMPLETED · IN VIOLATION
2024-05-15Fire Department Of NycINSPECTION AND TESTING40RIVERSIDE TENANTS,CORP$0 / $0 / $0014121040L
No balance due
PAID IN FULL
2024-03-12Sanitation OthersDIRTY SIDEWALK40 RIVERSIDE TENANTS CORP$50 / $50 / $0048201882L
No balance due
HEARING COMPLETED · DISMISSED
2022-05-16Pcs - DohmhFAIL TO ELIMINATE RODENT INFESTATION SHOWN BY ACTIVE RODENT SIGNS 1STC O MGMT$0 / $0 / $00802274340

Showing 12 of 50 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 2026-11-02

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.

HPD building ID
27271
Last registered
2021-11-17
Registration valid until
2022-09-01 ExpiredRegistrations must be renewed every year.

No records found in this dataset for this lot.

Source: HPD Multiple Dwelling Registrations — city dataset updated 2026-10-28; data as of 2026-11-02; HPD Registration Contacts — city dataset updated 2026-10-28; data as of 2026-11-02

HPD housing-code violations 0 open of 4

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.

StatusClassIssuedAptCondition
Closed
Violation Closed · 2022-06-22
A2022-02-16(A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.
Closed
Violation Dismissed · 2021-04-05
A2021-04-01(A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.
Closed
Violation Dismissed · 2016-12-20
I2016-10-26§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE SUBJECT TO CIVIL PENALTIES, PROHIBITED FROM CERTIFYING VIOLATIONS, AND DENIED THE RIGHT TO RECOVER POSSESSION OF PREMISE
Closed
Violation Dismissed · 2015-03-02
I2015-02-02§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE SUBJECT TO CIVIL PENALTIES, PROHIBITED FROM CERTIFYING VIOLATIONS, AND DENIED THE RIGHT TO RECOVER POSSESSION OF PREMISE

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

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 2026-11-02

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
2026-07-09DOHMHIndoor Air Quality – Dust from ConstructionClosed2026-07-13
2026-04-29EDCNoise - Helicopter – OtherIn Progress—

Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-02; data as of 2026-11-02

Nearby properties

On Riverside Dr

Same tax block (1185)

All properties on Riverside Dr, Manhattan · All of Manhattan 10023 (Upper West Side-Lincoln Square)

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