16 East 23rd 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
- Open critical violations5 Class C (immediately hazardous)
- Significant issues across building dataSee violation history below for details
About this building
A 6-story building located in Midtown South-Flatiron-Union Square, containing 7 residential units. Built in 1900.
The neighborhood: Flatiron District
Manhattan · 274 buildings tracked
Median asking rent: $4,915 1BR · $9,000 2BR
2 subway stations nearby
1 park · 0.3 acres · incl. Worth Square
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
- Heat/Hot Water5
- Pests1
- Security1
Severity Key
- Class C: Immediately Hazardous (Major)
- Class B: Hazardous (Moderate)
- Class A: Non-Hazardous (Minor)
- Heat/Hot Water
READY ACCESS TO BUILDINGS HEATING SYSTEM DOOR LOCKED AT CELLAR AT BOILER ROOM
Mar 30, 2026Class C - Heat/Hot Water
AN ADEQUATE SUPPLY OF HEAT FOR THE APARTMENT IN THE ENTIRE APARTMENT LOCATED AT APT PH, 8th STORY, 1st APARTMENT FROM NORTH AT EAST
Mar 30, 2026Class C - Heat/Hot Water
HOT WATER AT ALL HOT WATER FIXTURES IN THE ENTIRE APARTMENT LOCATED AT APT 7F, 7th STORY, 1st APARTMENT FROM WEST AT NORTH
Mar 30, 2026Class C - Heat/Hot Water
AN ADEQUATE SUPPLY OF HEAT FOR THE APARTMENT IN THE ENTIRE APARTMENT LOCATED AT APT 7F, 7th STORY, 1st APARTMENT FROM WEST AT NORTH
Mar 30, 2026Class C - Heat/Hot Water
POST NOTICE, IN FORM APPROVED BY THE DEPARTMENT, STATING THE NAME AND LOCATION OF THE PERSON DESIGNATED BY THE OWNER TO HAVE KEY TO BUILDINGS HEATING SYSTEM SIGN MISSING
Mar 30, 2026Class C
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 | — | $3,915.75 | — |
| 1 Bed | — | $4,915 | — |
| 2 Bed | — | $9,000 | — |
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
16 MADISON SQUARE COR
Responsiveness Score
Average time to resolve violations
⚡ 71% faster 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 8 open HPD violations on record, including 5 Class C (the city's most serious category).
- 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 2 noise complaints with 311 in the past year, about the neighborhood median of 2.
- How responsive is management to problems?
- Resolved violations at this building closed in about 13 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 Flatiron District is about $4,915/month for a one-bedroom.