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511 Third Avenue

MANHATTAN, NY 10016 BBL 1009150002 229 units · 35 floors · 2021

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HPD violations vs. neighborhood
Class B/C violations on record vs. a typical building in Murray Hill
? vs. avg
Fewer violations More violations

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Rent & eviction protection

Is 511 Third Avenue rent-stabilized?

Rent stabilization caps how much your rent can rise and protects your right to renew. Here's how this building scores on the four signals that usually point to it.

Built before 1974
Built 2021
6 or more units
229 units
Registered with RGB
Not found
421-A / J-51 abatement
None found
Likely not rent stabilized. This building doesn't show the typical signals — but confirm with the DHCR (Division of Housing and Community Renewal) if you suspect otherwise.

Based on public NYC records. Not legal advice — verify with the DHCR (Division of Housing and Community Renewal) at apps.hcr.ny.gov.

Augrented Insights
AI summary · updated June 2026

The 35-story, 229-unit residential building at 511 Third Avenue in Murray Hill, owned by Michael Himy, was completed in 2021 and has undergone several notable incidents in its short history. Most concerning are recurring heat and hot water issues, with three documented complaints between late 2023 and 2025, including one affecting the entire building in November 2023 and a more recent apartment-specific complaint in March 2025, though inspectors found no violations in the latter case. The building has also experienced various maintenance challenges, including plumbing issues in September 2024 (which inspectors couldn't initially access), flooring problems in March 2024, and ventilation system concerns in December 2023, all of which were addressed according to HPD resolutions.

The building's construction period (2019-2021) was marked by serious safety concerns, including multiple "Site Conditions Endangering Workers" complaints in 2023. Violation records from October 2022 show multiple instances of failing to certify corrections on immediately hazardous violations, though these were ultimately dismissed. An important incident occurred in July 2020 when a collapse of excavation work affected nearby structures at 211 and 213 E 34th Street. The building has maintained a clean record regarding bedbugs, with no reported infestations in the past two reporting periods (2022-2024). While there were initial rodent issues noted in July 2022, subsequent inspections appear to have resolved these concerns.

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How we score buildings

How 511 Third Avenue's risk score is calculated

We trained a model on 7 years of city inspection data — HPD violation filings, tenant complaints, and owner track records across their entire portfolio. It estimates the probability that HPD inspectors will find serious or dangerous violations at this address in the next 12 months. Lower % = safer.

What the score means for you

Neighborhood percentile
4th percentile

Out of 282 buildings in this neighborhood, 11 have a higher predicted risk.

RiskiestSafest
Predicted violation outcome
11.5%
No serious
violations
74.9%
Some violations
(1–9)
13.6%
Many violations
(10+)
Risk factors

What's driving this score

These are the three data points that most influenced this building's score — ranked by how much weight the model placed on each one.

Serious violations last 1–2 years

HPD found serious or dangerous conditions at this address recently — the strongest signal of problems ahead.

Number of apartments

The number of residential units affects how the model interprets complaint and violation totals — more units means more potential sources.

Building size

Total residential square footage — a proxy for building scale and the number of systems (plumbing, HVAC, etc.) that can fail.

Building characteristics
Total units229
Floors35
Year built2021
Gross area197,589 sq ft
Building class
Tax abatementNone
Issue trend & model projection

Violations & complaints per year — solid line is historical record, dashed line is AI projection.

Multiple entrances & addresses

Included addresses

All street addresses that share this building's BBL and are covered by this report.

507 3rd Ave, New York, NY 10016
511a 3rd Ave, New York, NY 10016
201 East 34th St, New York, NY 10016
203 East 34th St, New York, NY 10016
207 East 34th St, New York, NY 10016
209 East 34th St, New York, NY 10016
211 East 34th St, New York, NY 10016
509 3rd Ave, New York, NY 10016
Who's behind the building

511 Third Avenue's landlord & ownership

The people and companies registered to this building, the other properties they run, and their court record. A landlord's wider portfolio is often the best predictor of how your building will be treated.

Corporate Owner

Registered contact for this building.

Name
Third And Thirty Four LLC
Address
148 Madison Avenue 1600
New York, NY 10016
Landlord portfolio

Other properties owned.

Portfolio data hidden

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What residents say

Reviews from 511 Third Avenue tenants

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On the map

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