Free SF apartment background check

501 Hayes St

Hayes Valley, SF 94102 0818001 19 units · 3 fl · 1900

This building has far more open problems than almost any other in the neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Hayes Valley
At or below average
avg 2.3
0
FewerMore

This building has 0 novs (7y), at or below the Hayes Valley average of 2.3.

Rent & eviction protection

Is 501 Hayes St rent-controlled?

San Francisco's Rent Ordinance caps rent increases and provides eviction protection for most residential units built before 1979 with 2+ units. Here's how this building scores.

Built before 1979
Built 1900
2 or more units
19 units
Property type
Multi-Family Residential
Zoning
HAYES
Likely rent-controlled. Building age and unit count suggest this property falls under San Francisco's Rent Ordinance.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units19
Floors3
Year built1900
Total area15,692 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0818001
Ownership

Registered owner per SF Assessor-Recorder (secured roll).

Owner name
Bogart Terry & Mullin-Bogar
Mailing address
16351 Skyline Blvd Woodside CA 94062
Last sale
052516

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

445 Octavia St, San Francisco, CA 94102
501 Hayes St, San Francisco, CA 94102
449 Octavia St, San Francisco, CA 94102
Augrented Insights
Initial analysis

501 Hayes Street is a 19-unit, 3-story multi-family residential building constructed in 1900, owned by Bogart Terry & Mullin-bogar. The property has undergone significant recent improvements, including the installation of washer/dryer facilities in units 1 and 4 in September 2024, and compliance with the mandatory seismic retrofit program (completed in 2020 with separate permits for residential and commercial components). The building has experienced some notable issues in recent years, particularly concerning noise and vibration disturbances in unit 3 on the second floor, reportedly due to a commercial refrigerator compressor and mechanical unit installed underneath the bedroom. Complaints about this situation were filed between November and December 2023, citing noise levels exceeding permissible limits and vibrations affecting sleep quality.

Other recent building activities include a ground floor restaurant renovation in 2021 (valued at $310,000) with various improvements and accessibility upgrades, and the completion of multiple fire safety improvements in 2022, including the connection of an Ansul system to the fire alarm. The property has maintained compliance with various building codes and requirements, though there were some fire safety violations noted in 2023 regarding general unsafe buildings and hazardous materials, which have since been addressed. Historical records from 2010 show a series of building violations concerning mold, kitchen repairs, and window issues in unit 6, all of which were abated by November 2010. The building's maintenance history shows regular updates to electrical systems, including recent work in 2024 to accommodate laundry facilities, and various plumbing and lighting improvements over the years, suggesting ongoing investment in property maintenance and upgrades.

AI-generated · may contain errors · check the source data tables below

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Risk rating

How 501 Hayes St's risk score is calculated

We trained a model on 7 years of SF DBI inspection data — notice of violation filings, complaint history, and owner track records. It estimates the probability that DBI inspectors will issue a Notice of Violation at this address in the next 12 months. Lower % = safer.

What the score means for you

Grade A–B — Low risk

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Grade C — Moderate risk

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Grade D–F — High risk

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
8th percentile

Out of 1027 buildings in this neighborhood, 945 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
22%
No DBI
violation
78%
DBI violation
likely
Model explanation

What's driving this score

The three data points that most influenced this building's risk rating — ranked by the weight the model placed on each one.

Number of units

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

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

12-Month severity forecast
No violation 18.4%
Moderate concern 68.6%
Severe concern 13.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

501 Hayes St apartment reviews

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On the map

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The story over time

501 Hayes St event timeline

Violations, complaints, fire incidents, permits, and buyouts — most recent records in order.

2026
311 Request May 27
Garbage and debris
furniture
Building PermitApr 14
Unit #7: kitchen renovation in like kind. new shower valve & tile walls. upgrade electrical sub panel.

See all 33 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 501 Hayes St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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