# 145 Dahlgren Place, Brooklyn, NY 11228 BBL 3060920004 · Block 6092 · Lot 4 · BIN 3154867 Canonical page: https://nycpropertyfacts.com/ny/brooklyn/145-dahlgren-place-3060920004 Last updated: 2026-10-31 · Open-item counts as of 2026-11-08 ## Summary 145 Dahlgren Place (Brooklyn, NY 11228; tax lot BBL 3060920004) is a two-family home (building class B1: two-family home, brick), built around 1935, on a 1,454 sq ft lot zoned R5B. City tax records list the owner as MCMAHON, SEAN L. The Department of Finance's final market value for tax year 2027 is $1,522,000. As of November 8, 2026, NYC Open Data shows one active DOB violation. There was one 311 request 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.) How to cite: NYC Property Facts, “145 Dahlgren Place, Brooklyn, NY 11228 (BBL 3060920004)”, data as of 2026-11-08, https://nycpropertyfacts.com/ny/brooklyn/145-dahlgren-place-3060920004. Source: NYC Open Data. ## Neighborhood Dyker Heights: https://nycpropertyfacts.com/ny/brooklyn/11228 - Open HPD violations: https://nycpropertyfacts.com/ny/brooklyn/11228/open-hpd-violations - Active DOB violations: https://nycpropertyfacts.com/ny/brooklyn/11228/active-dob-violations - Active ECB violations: https://nycpropertyfacts.com/ny/brooklyn/11228/active-ecb-violations - Open DOB jobs: https://nycpropertyfacts.com/ny/brooklyn/11228/open-dob-jobs - Unpaid OATH tickets: https://nycpropertyfacts.com/ny/brooklyn/11228/unpaid-oath-tickets ## ZIP Brooklyn 11228: https://nycpropertyfacts.com/ny/brooklyn/11228 ## Nearby properties Ordered by map distance among lots on this street within 40 house numbers and on this tax block within 15 lot numbers. - 147 Dahlgren Place (18 ft): https://nycpropertyfacts.com/ny/brooklyn/147-dahlgren-place-3060920003 - 143 Dahlgren Place (19 ft): https://nycpropertyfacts.com/ny/brooklyn/143-dahlgren-place-3060920104 - 149 Dahlgren Place (38 ft): https://nycpropertyfacts.com/ny/brooklyn/149-dahlgren-place-3060920002 - 141 Dahlgren Place (43 ft): https://nycpropertyfacts.com/ny/brooklyn/141-dahlgren-place-3060920005 - 139 Dahlgren Place (59 ft): https://nycpropertyfacts.com/ny/brooklyn/139-dahlgren-place-3060920006 - 153 Dahlgren Place (60 ft): https://nycpropertyfacts.com/ny/brooklyn/153-dahlgren-place-3060920001 - 101 Dahlgren Place (372 ft): https://nycpropertyfacts.com/ny/brooklyn/101-dahlgren-place-3060920018 - 97 Dahlgren Place (404 ft): https://nycpropertyfacts.com/ny/brooklyn/97-dahlgren-place-3060920019 ## Open items | Item | Count | |---|---| | Open DOB jobs (permit issued, not signed off) | 0 | | Active DOB violations | 1 | | Active ECB violations | 0 | | Open HPD violations | 0 | | OATH tickets with unpaid balance | 0 | ## Lot & building - Owner of record: MCMAHON, SEAN L - Building class: B1 – Two-family home, brick - Year built: 1935 - Floors: 2 - Units: 2 residential / 2 total - Lot area: 1,454 sq ft · Building area: 1,936 sq ft - Zoning: R5B - Source: PLUTO (Dept. of City Planning) (https://data.cityofnewyork.us/d/64uk-42ks), city dataset updated 2026-08-24; last loaded 2026-11-08 ## Tax assessment - Tax year 2027 (final roll): market value $1,522,000, assessed value $91,320, tax class 1 - Source: DOF Property Valuation and Assessment Data (https://data.cityofnewyork.us/d/8y4t-faws) ## Sales & deeds (ACRIS) Deeds recorded with the City Register. amount 0 usually means a non-market transfer. lots_in_deed > 1 means the price covers several lots. | Date | Status | Description | Source | |---|---|---|---| | 2019-06-19 | recorded (DEED) | DEED dated 2019-06-19 from MCMAHON, SEAN L to MCMAHON, SEAN L; MCMAHON, CYNTHIA, no price stated ($0). | bnx9-e6tj | | 1986-06-09 | recorded (DEED) | DEED dated 1986-06-09 from BAROUS, JOHN T; BAROUS, LEVINA M to MC MAHON, SEAN L, no price stated ($0). | bnx9-e6tj | | 1975-05-05 | recorded (DEED) | DEED dated 1975-05-05 from ABRAHAMSEN NELLIE T; ABRAHAMSEN FREDRIK K; ABRAHAMSEN FREDERIK K to BAROUS JOHN; BAROUS LEVINA, no price stated ($0). | bnx9-e6tj | ## Open DOB jobs and recent work permits A DOB "job" is an application to do construction work. status "open" = a permit was issued but DOB has no record of final sign-off. Work permits are listed with type "work_permit" and their DOB permit status (they are not counted as open items). | Date | Status | Description | Source | |---|---|---|---| | 2023-08-03 | n/a (Signed-off) | DOB NOW work permit for job B00906121-I1: General Construction — The legalization of the reconstruction of an exist. approx. 74 sf open porch and steps at the front of a 2 story brick w/ basement one family res. dwelling; no…. Issued 2023-08-03, expires 2023-10-07. | rbx6-tga4 | ## Open violations (DOB, ECB, HPD) status "open" = DOB violation category is ACTIVE, ECB violation status is ACTIVE, or HPD violation status is Open. | Date | Status | Description | Source | |---|---|---|---| | 2023-06-21 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (C-CONSTRUCTION OTHER OPTIONAL): WORK WITHOUT A PERMIT. PREMISES MASONRY DECK REMOVED AND BEEN REPLACE WITHOUT PERMIT. NO PERMIT ON FILE.. Active — not recorded as resolved or dismissed. | 3h2n-5cm9 | ## OATH tickets with unpaid balance or pending status "open" = balance due > $0 after a decision (cases awaiting a hearing are "pending"). default=true means the respondent did not appear. No records found. ## Complaints (HPD since 2019, 311 last 12 months) Complaints are reports, not violations. status mirrors the published complaint / request status. | Date | Status | Description | Source | |---|---|---|---| | 2026-06-03 | open (In Progress) | 311 request to TLC: For Hire Vehicle Complaint – Car Service Company Complaint. | erm2-nwe9 | ## Owners & contacts Owner of record comes from city tax records (PLUTO) and can lag behind recent sales. | Date | Status | Description | Source | |---|---|---|---| | 2026-08-24 | current | City tax records (PLUTO) list the owner as MCMAHON, SEAN L. | 64uk-42ks | | 2019-06-19 | recorded | Grantee (buyer) on the most recent deed (DEED, 2019-06-19). | 636b-3b5g | | 2019-06-19 | recorded | Grantee (buyer) on the most recent deed (DEED, 2019-06-19). | 636b-3b5g | --- Independent site. Data from NYC Open Data; not affiliated with the City of New York. Not a title search or official record; verify with the issuing agency. JSON: https://nycpropertyfacts.com/api/v1/property/3060920004