Free SF apartment background check

801-805 Hayes St

Alamo Square, SF 94117 0821001 15 units · 4 fl · 1906

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 Alamo Square
Above average
avg 2.3
5
FewerMore

This building has 5 novs (7y), above the Alamo Square average of 2.3.

Rent & eviction protection

Is 801-805 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 1906
2 or more units
15 units
Property type
Multi-Family Residential
Zoning
RM1
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
Units15
Floors4
Year built1906
Total area9,109 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0821001
Ownership

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

Owner name
Acorn Ventures Limited Liab
Mailing address
268 Bush St # 1688 San Francisco CA 94104
Last sale
011521

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.

801 Hayes St, San Francisco, CA 94117
805 A Hayes St, San Francisco, CA 94117
561 Webster St, San Francisco, CA 94117
563 Webster St, San Francisco, CA 94117
Augrented Insights
Initial analysis

The 15-unit residential building at 801-805 Hayes Street, owned by Acorn Ventures Limited Liability Company, is a historic 1906 structure located in the Alamo Square neighborhood. The building has recently experienced significant fire-related incidents, with records showing multiple units undergoing fire damage remediation and repairs in 2023-2024, including Units B, C, D, E, and F. The property is currently non-compliant with the Mandatory Soft Story Retrofit Program (Tier IV), with an active violation from December 2022 regarding unfinished retrofit work, which is scheduled for a director's hearing in March 2024. The building has also faced several building condition issues in recent years, including problems with weatherproofing, siding detachment, and multiple fire safety violations related to alarm systems, extinguishers, and exit blockage between 2022-2024, though most of these have been corrected. Three additional dwelling units (ADUs) were successfully added to the property in 2022, along with recent plumbing and electrical upgrades. Historical issues from 2007-2010 included maintenance violations related to stairs, handrails, and general dilapidation, all of which were eventually resolved.

The building has a documented history of fire alarm system malfunctions, with multiple instances of false alarms and system problems between 2020-2024. There was a verified building fire incident recorded, though fortunately with no civilian injuries reported. Recent repair work has included siding replacement and various unit renovations, with ongoing rehabilitation of fire-damaged units as of 2024. The property has undergone various improvements including the installation of a full fire sprinkler system and updates to individual unit kitchens and bathrooms. Multiple complaints regarding noise during renovations in 2022 and pest issues related to a vacant commercial space in 2019 were recorded. The building's maintenance history shows regular permits for unit upgrades, though current work related to fire damage repairs and soft story compliance remains a significant focus.

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

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Risk rating

How 801-805 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
3th percentile

Out of 305 buildings in this neighborhood, 296 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
18%
No DBI
violation
82%
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.

Property class

The assessor's property-class code, which correlates with building type and the violation rates the model expects. This code is grouped with other less-common classes.

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 14.2%
Moderate concern 81.8%
Severe concern 4.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

801-805 Hayes St event timeline

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

2026
311 Request May 30
Garbage and debris
other loose garbage debris yard waste
Fire ComplaintMay 13
Sleeping Area Requirement

See all 37 events

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

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Every record we have

Full data for 801-805 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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