178 Union Street
Building overview
Data as of Jul 1, 2026
Based on open violations, 311 complaint patterns, and amenities.
Compared to typical rent for this neighborhood and bedroom count.
Highlights
What's great about this place
- Pre-war characterBuilt in 1920
- Quieter than average for the neighborhood0 noise complaints in past year (vs 1 median)
Things to Know
Real considerations before you sign
- Significant issues across building dataSee violation history below for details
About this building
A 4-story building located in Carroll Gardens-Cobble Hill-Gowanus-Red Hook, containing 9 residential units. Built in 1920.
The neighborhood: Carroll Gardens
Brooklyn · 2,623 buildings tracked
Median asking rent: $4,200 1BR · $6,500 2BR
1 subway station nearby
4 parks · 1.3 acres · incl. Dimattina Playground
Available Units
0 active
No past listings.
Past and off-market units will appear here when data is available.
Safety & Violations
Safety Record
Active Violations
Open HPD violations on record for this building.
Top issues
- Admin8
- Pests6
- Window/Door3
Severity Key
- Class C: Immediately Hazardous (Major)
- Class B: Hazardous (Moderate)
- Class A: Non-Hazardous (Minor)
- Structural
WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE FIRE RETARDED PLASTERBOARD CEILING THROUGHOUT AT CELLAR
Jan 5, 2017Class B - Window/Door
THE BROKEN OR DEFECTIVE GLASS UPPER SASH WINDOW IN THE KITCHEN LOCATED AT APT 3L, 3rd STORY, APARTMENT AT EAST
Jan 5, 2017Class B - Safety
OR REPLACE THE CARBON MONOXIDE DETECTING DEVICE(S). DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 3L, 3rd STORY, APARTMENT AT EAST
Jan 5, 2017Class B - Safety
OR REPLACE THE SMOKE DETECTOR DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 3L, 3rd STORY, APARTMENT AT EAST
Jan 5, 2017Class B - Pests
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.
May 6, 2026Class A
Market Value Estimate
Statistical estimate based on publicly available listing data. Not an appraisal. See disclaimer.Market data as of Jul 1, 2026.
Comp Matrix
| Unit Type | This Bldg | Area Avg | Diff. |
|---|---|---|---|
| Studio | — | $3,000 | — |
| 1 Bed | — | $4,200 | — |
| 2 Bed | — | $6,625 | — |
| 3+ Bed | — | $12,500 | — |
Value Verdict
Insufficient listing or market data to compute a verdict for this building.
Rent vs. Buy Analysis
No listing data available to estimate rent vs. buy.
Management & Operations
Management & Performance
Owner/Operator
BOLTZ MAUDE
Cannot compute responsiveness yet. The building has 24 open violations but none have been resolved in our visibility window, so days-to-close has no data to average.
We haven't verified this building's policies yet. Pet, utility, and leasing details appear here once we've reviewed the management company's official site — we only show policies we can source, never assumptions.
Living here — quick answers
Every answer comes from public records for this specific building — we skip questions we can't answer with data.
- How well maintained is this building?
- There are 24 open HPD violations on record, none in the city's most serious category (Class C).
- Is this building rent-stabilized?
- Yes — this building appears on the DHCR rent-stabilized building list. Ask the landlord to confirm whether a specific apartment is stabilized.
- How noisy is this building?
- Neighbors filed 0 noise complaints with 311 in the past year — none on record for this building.
- What does it cost to live here?
- We don't have current listings for this building. Typical asking rent in Carroll Gardens is about $4,200/month for a one-bedroom.