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439-445 Oak St

Hayes Valley, SF 94102 0840019 3 units · 3 fl · 1911

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Hayes Valley — not a forecast
At or below average
avg 2.2
0
FewerMore

This building has 0 novs (7y), at or below the Hayes Valley average of 2.2.

Rent & eviction protection

Is 439-445 Oak 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 1911
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RH3
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1911
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units3
Floors3
Year built1911
Total area4,875 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0840019
Ownership

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

Owner name
Mailing address
369 Duncan St San Francisco CA 94131
Last sale
October 20, 2017

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

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

445 Oak St, San Francisco, CA 94102
441 Oak St, San Francisco, CA 94102
439 Oak St, San Francisco, CA 94102
443 Oak St, San Francisco, CA 94102
Augrented Insights
Initial analysis

This three-story multi-family residential building, located at 439-445 Oak Street in Hayes Valley and owned by Arce Magnus LLC, was constructed in 1911 and contains three units. The property has undergone significant renovations and safety upgrades over the past several years, with the most substantial work occurring between 2018-2021. Major improvements include the conversion of the first-floor garage into a 3-bedroom, 2-bathroom ADU unit, complete foundation replacement, installation of fire sprinkler systems throughout, and various interior updates including bathroom additions. The building has received comprehensive electrical upgrades, including a complete rewiring, service upgrade to 200 amps, and new individual panels for each unit. Multiple plumbing improvements were also undertaken, including furnace installations and a complete kitchen and bathroom remodel.

The building's recent history shows active maintenance and upgrading of essential systems, with no current building violations on record. Past issues primarily related to heating problems in 2008-2009, when multiple notices were issued regarding inadequate heat supply, though these were subsequently resolved. There was one complaint in 2018 regarding construction work and permit display that was marked as not active. The property has experienced regular street maintenance issues typical of the urban environment, with several recent 311 calls in 2022-2023 primarily related to parking enforcement and sidewalk cleaning. A collapsed sidewalk issue reported in December 2022 remains open as of the last update. The building's permit history shows responsible ownership and compliance with safety regulations, particularly through the installation of modern fire safety systems and comprehensive building upgrades.

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

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Risk rating

How 439-445 Oak 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

Lower risk — safer than most nearby

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

Typical — about average for the neighborhood

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

Higher risk — riskier than most nearby

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

Neighborhood percentile
89thpercentile

Out of 1027 buildings in this neighborhood, 113 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
87%
No DBI
violation
13%
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.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

Notices of Violation, owner's portfolio

DBI NOVs across all buildings this owner is registered on — a signal of systemic maintenance issues across the portfolio.

12-Month risk forecast
Low failure risk 13%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

439-445 Oak St apartment reviews

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On the map

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The story over time

439-445 Oak St event timeline

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

2023
311 Request Mar 01
General cleaning
Other Loose Garbage

See all 13 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 439-445 Oak St apartments

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

Side by side

How 439-445 Oak St compares to the neighborhood

This building against comparable properties in Hayes Valley. Toggle filters to narrow the peer group.

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

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