298 DEKALB AVENUE
298 DEKALB AVENUE is a Class C0 (walk-up, 3+ families) building in Brooklyn (BBL 3019310019) built in 1876, with 3 residential units across 3 floors.
The building is in NYC community district 302, council district 35, zoning district R6B, on a 2,000-square-foot lot with a building footprint of 3,328 square feet.
The current registered owner of record per NYC PLUTO is ORTHWEIN, ALEXANDER.
The most recent ACRIS deed transfer for this BBL was recorded on January 9, 2024 when O'sullivan, Courtenay H; Champigneulle, Pierre G conveyed the property to Orthwein, Alexander for $5.78M. The transaction was recorded as cash (no paired mortgage instrument).
The building is registered with NYC HPD's landlord-registration system and has no open HPD housing-maintenance code violations on record as of May 18, 2026.
Data sourced daily from NYC PLUTO (Department of City Planning), NYC ACRIS (Department of Finance), and NYC HPD housing-maintenance code violations.
Owner of record
HPD registered contacts
- Site ManagerAlexander Orthwein
Most recent deed
Recent ACRIS documents (last 5)
Building stats
- Zoning:
- R6B
- Lot size:
- 2,000 sqft
- Building area:
- 3,328 sqft
- Floors:
- 3
- Assessed value:
- $216K
- Community district:
- 302
- Council district:
- 35
HPD violations
Recent HPD violation details
- Class AInspected May 4, 2026(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 HPD…
- Class IInspected Nov 18, 2025§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…
- Class AInspected Jun 9, 2025(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 HPD…
- Class IInspected Nov 25, 2024§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…
- Class AInspected Apr 9, 2024(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 HPD…
Recent ACRIS activity
Frequently asked questions about 298 DEKALB AVENUE
Who owns 298 DEKALB AVENUE?
The current registered owner of record for 298 DEKALB AVENUE per NYC PLUTO is ORTHWEIN, ALEXANDER. The most recent ACRIS deed transfer for this BBL was recorded on January 9, 2024 when the property was conveyed to Orthwein, Alexander. PLUTO ownership is refreshed monthly by NYC Department of Finance; the registered owner may not reflect transactions recorded within the last 30 days.
When was 298 DEKALB AVENUE last sold?
The most recent ACRIS deed transfer for 298 DEKALB AVENUE was recorded on January 9, 2024, when O'sullivan, Courtenay H; Champigneulle, Pierre G conveyed the property to Orthwein, Alexander for $5.78M. The transaction was recorded as cash (no paired mortgage instrument).
How many HPD violations does 298 DEKALB AVENUE have?
No open HPD housing-maintenance code violations are on record for 298 DEKALB AVENUE as of May 18, 2026. The building is registered with NYC HPD's landlord-registration system. HPD violation data is pulled daily from the NYC Open Data violations feed.
What is the assessed value of 298 DEKALB AVENUE?
NYC Department of Finance assesses 298 DEKALB AVENUE at $216K for the current tax year. NYC assesses property at a fraction of estimated market value (the assessment ratio varies by tax class — 6% for tax class 1 one-to-three-family dwellings, approximately 45% for tax class 2 rental apartment buildings), so the market value implied by this assessment is meaningfully higher. Assessment data is published by NYC Department of Finance.
What building class is 298 DEKALB AVENUE and what does that mean?
298 DEKALB AVENUE is NYC building class C0 — Walk-up, 3+ families. A 3-to-6-story walk-up apartment building (no elevator), 3 or more residential units. Building class is assigned by NYC Department of Finance and recorded in PLUTO; it determines the property's tax class and the regulatory regime that applies.