669 East 21st 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
- Quieter than average for the neighborhood0 noise complaints in past year (vs 2 median)
Things to Know
Real considerations before you sign
- Open critical violations2 Class C (immediately hazardous)
- Top complaint type at this building36 heat complaints in past year
- Significant issues across building dataSee violation history below for details
About this building
A 4-story building located in Flatbush, containing 8 residential units. Built in 2005.
The neighborhood: Ditmas Park
Brooklyn · 2,206 buildings tracked
Median asking rent: $2,650 1BR
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
Higher than typical for this neighborhood (4 vs 1 average per building).
Top issues
- Structural2
- Safety1
- Window/Door1
Severity Key
- Class C: Immediately Hazardous (Major)
- Class B: Hazardous (Moderate)
- Class A: Non-Hazardous (Minor)
- Window/Door
ADM CODE REMOVE THE ILLEGAL FASTENING CONSISTING OF SELF LOCKABLE PUSH BAR ASSEMBLY AT WEST BULKHEAD DOOR TO ROOF
Feb 18, 2026Class C - Safety
C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES AT BULKHEAD , 4th STORY, SECTION ''WEST''
Nov 12, 2025Class C - Structural
THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING IN THE 2nd ROOM FROM EAST LOCATED AT APT 4R, 4th STORY, 1st APARTMENT FROM EAST AT SOUTH
Jan 26, 2026Class B - Structural
THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING IN THE FOYER LOCATED AT APT 4R, 4th STORY, 1st APARTMENT FROM EAST AT SOUTH
Feb 18, 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 | — | $2,800 | — |
| 1 Bed | — | $2,650 | — |
| 2 Bed | — | $3,500 | — |
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
SGH OLD HOUSE LLC
Responsiveness Score
Average time to resolve violations
Slower than 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, including 2 Class C (the city's most serious category). That's higher than typical for the neighborhood (1 average per building).
- 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.
- How responsive is management to problems?
- Resolved violations at this building closed in about 97 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 Ditmas Park is about $2,650/month for a one-bedroom.