356 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 1900
Things to Know
Real considerations before you sign
- Top complaint type at this building5 noise complaints in past year
- Higher noise than typical for the neighborhood5 noise complaints in past year (vs 1 median)
- Significant issues across building dataSee violation history below for details
About this building
A 5-story building located in Carroll Gardens-Cobble Hill-Gowanus-Red Hook, containing 20 residential units. Built in 1900.
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
- Pests1
- General1
- Structural1
Severity Key
- Class C: Immediately Hazardous (Major)
- Class B: Hazardous (Moderate)
- Class A: Non-Hazardous (Minor)
- Window/Door
REFIT UPPER AND LOWER WINDOW SASH AT WEST WALL IN THE 2nd ROOM FROM NORTH LOCATED AT APT 17, 5th STORY, 1st APARTMENT FROM SOUTH AT WEST
Apr 3, 2026Class B - General
THE MISSING NEWEL POST CAP INTERMEDIATE LANDING 1 TO 2 STY PUBLIC HALL.
Jul 3, 2008Class B - Pests
M/D LAW FILE PLANS AND APPLICATION AND LEGALIZE THE FOLLOWING ALTERATION OR RESTORE TO THE LEGAL CONDITION EXISTING PRIOR TO THE MAKING OF SAID ALTERATION OPENING CUT MADE EAST PARTY WALL CELLAR FRONT.
Jul 3, 2008Class A - Structural
THE BROKEN OR DEFECTIVE CERAMIC TILE FLOORS VESTIBULE & 1 STY PUBLIC HALL.
Jul 3, 2008Class 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
EPSILON UNION 5K LLC
Responsiveness Score
Average time to resolve violations
Similar to NYC average (45 days)
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 4 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 5 noise complaints with 311 in the past year, above the neighborhood median of 1 among buildings with any noise complaints.
- How responsive is management to problems?
- Resolved violations at this building closed in about 48 days on average (NYC average is roughly 45 days). Open items are listed in the Safety & Violations section above.
- 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.