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633 Oak St

Hayes Valley, SF 94117 0842028 6 units · 3 fl · 1908

This building has a substantial enforcement record over the last seven years, and our model predicts continuing maintenance failures over the next 12 months. Read the records below before you sign. Ask which issues were resolved, get repair commitments in writing, and inspect the unit yourself.

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

This building has 7 novs (7y), above the Hayes Valley average of 2.2.

Rent & eviction protection

Is 633 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 1908
2 or more units
6 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.

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 1908
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
Units6
Floors3
Year built1908
Total area5,250 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0842028
Ownership

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

Mailing address
Ballast Investments 49 Powell St Fl 4 San Francisco CA 94102
Last sale
October 03, 2018

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-story, six-unit multi-family residential building at 633 Oak Street in Hayes Valley, built in 1908, has undergone several significant renovations and faced multiple safety-related issues in recent years. Most notably, in May 2023, the property filed for a mandatory fire alarm system installation to comply with San Francisco Fire Code requirements for non-sprinklered buildings, which is still in the filed status. The building experienced substantial work disruptions in early 2021 when multiple building violations were recorded, including issues with unauthorized renovation work in Unit 4, problems with mold/mildew, window repairs, and damaged ceilings, though these violations were abated by March 2022. Between 2017 and 2021, several units (including Units 4, 5, and 6) underwent permitted renovations, including kitchen and bathroom updates, with associated plumbing and electrical work.

The property has addressed its soft-story seismic safety requirements, with work completed and a Certificate of Final Completion issued. Multiple street space permits were issued between late 2019 and 2020, suggesting some exterior or public space-related work was conducted. The building's maintenance history includes attention to various infrastructure elements, with recent 311 calls primarily related to street cleaning and sidewalk maintenance external to the building's direct management. Three separate Zoning Verification requests have been processed for the address between 2016 and 2018, indicating interest in confirming zoning-related details for the property. While the building's recent renovation activity suggests ongoing maintenance and upgrading efforts, the property has experienced periodic issues with building systems and weathered multiple violation processes, particularly during the 2021 period, before these were resolved through subsequent improvements and system upgrades.

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

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Risk rating

How 633 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
14thpercentile

Out of 1027 buildings in this neighborhood, 883 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
38%
No DBI
violation
62%
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.

DBI tenant complaints (past 7 years)

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

Number of units

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

Director's hearing rate, owner's portfolio

Per-building rate of director's hearings across the owner's portfolio.

12-Month risk forecast
High failure risk 62%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

633 Oak St apartment reviews

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On the map

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The story over time

633 Oak St event timeline

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

2026
Planning Record Jun 04
Request for zoning verification letter
Closed - Issued

See all 21 events

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

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Every record we have

Full data for 633 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 633 Oak St compares to the neighborhood

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