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336-340 Hayes St

Hayes Valley, SF 94102 0809007 47 units · 6 fl · 1927

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
Above average
avg 2.3
7
FewerMore

This building has 7 novs (7y), above the Hayes Valley average of 2.3.

Rent & eviction protection

Is 336-340 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 1927
2 or more units
47 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
Units47
Floors6
Year built1927
Total area29,460 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0809007
Ownership

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

Owner name
Debra Maxine Trattner Tr
Mailing address
Chandler Properties 3745 California St San Francisco CA 94118
Last sale
071399

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.

340 Hayes St, San Francisco, CA 94102
336 Hayes St, San Francisco, CA 94102
Augrented Insights
Initial analysis

The 6-story, 47-unit multi-family residential building at 336-340 Hayes St in Hayes Valley, constructed in 1927, has experienced several significant maintenance and safety events over recent years. Most notably, in late 2022, the building faced heating issues, with complaints about inadequate heat reported in both November and December, leading to a violation that was ultimately resolved by February 2023. The building underwent important safety system upgrades, including a complete reroofing in July 2024 (cost: $122,850) and the installation of low-frequency horns and fire alarm system upgrades in 2021 (cost: $82,000). A hot water boiler and storage tank replacement was completed in April 2022, demonstrating ongoing infrastructure improvements.

The building has a documented history of fire safety concerns, with multiple violations and complaints regarding alarm systems, sprinkler systems, and fire escape maintenance between 2016 and 2023. Specifically, in 2021-2022, there were issues with alarm systems and sprinkler/standpipe systems that required correction, while violations from 2019 indicated problems with emergency lighting, exits/fire escapes, and other safety systems that were subsequently abated. The property has undergone various plumbing upgrades, including water line replacements in 2013 and a major service upgrade in 2013. While recent maintenance appears to be more proactive, as evidenced by the 2024 reroofing project and previous violations being addressed, the building's history shows recurring patterns of heating system issues and fire safety system challenges that required intervention over time.

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

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Risk rating

How 336-340 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
2th percentile

Out of 1027 buildings in this neighborhood, 1006 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
12%
No DBI
violation
88%
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.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

Building size

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

12-Month severity forecast
No violation 17.3%
Moderate concern 45.0%
Severe concern 37.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

336-340 Hayes St apartment reviews

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The story over time

336-340 Hayes St event timeline

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

2026
DBI Complaint Apr 27
Date last observed: 25-apr-26; time last observed: 5.20pm; exact location: main bldg; building type: residence/dwelling disabled acc: entrance; disabled acc: elevator/lift; ; additional information: no emergency access to building since keypad is broken. inaccessibility issues with broken elevator ;
Disabled Access Division

See all 19 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 336-340 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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