738 Union Street

738 Union Street in Park Slope, Brooklyn, has 12 open HPD violations, 2 of them class C, and no rent-stabilized units are on its tax bill, as of Oct 25, 2026. StreetSpy grade: D (55/100).

Multi-family walk-up · 4 units · Built 1920

StreetSpy grade: D (Poor, 55/100)

• 2 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
• 1 open violation is classified rent-impairing under NY Multiple Dwelling Law section 302-a.
• No housing complaints to 311 in the last 12 months.
• No rent-stabilized units on the tax bill. Increases aren't capped by stabilization, though Good Cause Eviction may still limit them.

More open violations per unit than 7 in 10 Brooklyn buildings this size.

• Repairs: High (12 open, 2 class C), records as of Oct 25, 2026
• Heat and hot water: No complaints, 12 mo, records as of Oct 25, 2026
• Pests: Clear (Owner reported none, 3 yr), records as of Oct 27, 2026
• Safety: Clear (No open DOB violations), records as of Oct 23, 2026
• Registration: Through Sep 1, 2027, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

12 open violations: 2 class C (immediately hazardous), 8 class B, 2 class A. 1 issued in the last 12 months. 16 on record. Oldest open violation issued 1999-04-27. Newest violation issued 2026-05-06.

HPD recorded no violation closed here in the last 12 months.

1 open violation is classified rent-impairing under NY Multiple Dwelling Law section 302-a. Section 302-a; NY Courts guidance on getting repairs.

• Class C: Lead paint hazard, east wall, private hall. REMOVE OR COVER IN A MANNER APPROVED BY THE DEPARTMENT THE PEELING LEAD PAINT AT EAST WALL IN 3 STY APT 4 PRIVATE HALL OLECK JOAN 398 6514 ER1 31524 , SECTION '' '' (apt 4), issued 1999-04-27. HPD violation 2206281
• Class C: Lead paint hazard, bathroom. REMOVE OR COVER IN A MANNER APPROVED BY THE DEPARTMENT THE PEELING LEAD PAINT AND OR PLASTER AT WINDOW FRAME IN 3 STY APT 4 BATHROOM ER1 31524 , SECTION '' '' (apt 4), issued 1999-04-27. HPD violation 2206282
• Class B: No heat / heating defect (basement). PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE CEMENT & BLOCK AROUND PIPES BOILER ROOM WALL CELLAR CENTER., issued 2009-08-04. HPD violation 2206274
• Class B: Damaged plaster or paint (basement). PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE PLASTER CEILING CELLAR THRU OUT., issued 2009-08-04. HPD violation 2206275
• Class B: Garbage not removed (basement). SECTION 27-2010, 2011, 2012 ADM CODE REMOVE THE ACCUMULATION OF REFUSE AND/OR RUBBISH AND MAINTAIN IN A CLEAN CONDITION THE CELLAR THRU OUT., issued 2009-08-04. HPD violation 2206276
• Class B: Self-closing door not working (basement). SECTION 27-2005, 2007 ADM CODE ARRANGE AND MAKE SELF-CLOSING THE DOORS BOTTOM OF CELLAR STAIR ENCLOSURE CELLAR., issued 2009-08-04. HPD violation 2206278
• Class B: Door, lock or intercom defect (roof). SECTION 27-2005, 2007 ADM CODE REMOVE THE ILLEGAL FASTENING HASP & EYE AT BULKHEAD DOOR TO ROOF., issued 2009-08-04. HPD violation 2206279
• Class B: Required notice or sign missing (entrance). REPLACE WITH NEW THE MISSING NEWEL POST AT BOTTOM OF ENTRANCE STOOP SOUTH SIDE., issued 2009-08-04. HPD violation 2206280

311 housing complaints

0 in the last 12 months, 0 in 5 years.

Bedbugs

The owner reported 0 infested units in the last 3 years of filings. HPD's bedbug filings are self-reported by the owner once a year; HPD does not inspect to confirm them.

• 2026: No bedbug filing on record for this year
• 2025: Owner reported 0 infested units
• 2024: Owner reported 0 infested units
• 2023: Owner reported 0 infested units
• 2022: Owner reported 0 infested units
• 2021: Owner reported 0 infested units

Buildings department (DOB)

No open DOB violations. 0 DOB violations on record. Check on DOB BIS.

Evictions and housing court

0 executed evictions in the last 3 years (0 on record). 0 open HPD cases; 0 harassment findings.

Rent stabilization

No rent-stabilized units on the tax bill.

Owner and management

Owner: MELINA MASTROIANNI. See the full portfolio.

Last HPD registration Jul 24, 2026, valid through Sep 1, 2027.

Tax lot and city IDs

BBL 3009560036, HPD building ID 383858. HPD Online, ACRIS, DOB BIS.

Nearest subway

• Union St (R), 5 min walk
• 7 Av (B, Q), 7 min walk
• Grand Army Plaza (2, 3), 8 min walk

How the grade is calculated

Sources: NYC HPD Housing Maintenance Code Violations, NYC 311 Service Requests, NYC HPD Bedbug Reporting, NYC Marshal Evictions (DOI), NYC HPD Housing Litigations, NYC DOB Violations, NYC DOF tax bills (via JustFix Who Owns What portfolio API, v2), NYC HPD Property Registration. Methodology. Report generated 2026-10-28.