Free SF apartment background check

673 Oak St

Hayes Valley, SF 94117 0842024 13 units · 3 fl · 1909

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
11
FewerMore

This building has 11 novs (7y), above the Hayes Valley average of 2.2.

Rent & eviction protection

Is 673 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 1909
2 or more units
13 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 1909
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
Units13
Floors3
Year built1909
Total area9,600 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0842024
Ownership

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

Owner name
Mailing address
601 Scott St San Francisco CA 94117
Last sale

Landlord portfolio

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

Unlock complete report
Augrented Insights
Initial analysis

Located in Hayes Valley, 673 Oak Street is a three-story multi-family residential building constructed in 1909, containing 13 units and currently owned by William E. Hoskins. The building has undergone several significant renovations and improvements over the past few years, including a complete kitchen and bathroom upgrade project in 2024 (costing $316,505) affecting units 2, 4, 5, 6, 8, 9, and 10, and a reroofing project completed in late 2023 ($26,950). A 2023 complaint about unexpected hot water issues followed the replacement of a 100-gallon water heater, while in 2024, multiple sewage back-up discharge incidents were reported from the side sewer vent. Notably, the building completed a mandatory soft-story retrofit in 2017 (cost: $223,000) under Tier 3 requirements, and there have been recurring fire safety violations between 2015-2024 related to sprinkler systems, emergency lighting, combustible materials, and hazardous materials, though most have been corrected.

The building's recent history shows a pattern of maintenance and upgrade work, but also some concerning issues. In late 2024, there was a complaint about unpermitted renovation work on unit 10, following previous unpermitted renovations to multiple other units. The property experienced significant hot water system issues in late 2023, affecting all units. Important building systems have received attention, including the installation of a new water heater in September 2023 and a complete reroofing project in 2023. Historical records show fire damage repair work was completed in 1989, and the building has maintained its 5-14 unit classification throughout its history. Regular street cleaning and sanitation issues have been addressed through 311 calls, and there have been occasional parking enforcement matters on the property.

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

Free account unlocks the full analysis — plus 2× more records across all data categories and the complete landlord portfolio.
Risk rating

How 673 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
9thpercentile

Out of 1027 buildings in this neighborhood, 935 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
26%
No DBI
violation
74%
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.

Building size

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

NOV rate, owner's portfolio

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

Number of units

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

12-Month risk forecast
High failure risk 74%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

673 Oak St apartment reviews

Real experiences from people who have lived here. Share yours to help other renters decide.

Share your experience — Help other renters by leaving an honest apartment review

Loading reviews…

On the map

Compare nearby alternatives

This building and nearby alternatives, color-coded by risk level. Click any marker to explore.

The story over time

673 Oak St event timeline

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

2026
Fire Complaint Jul 22
Alarm Systems

See all 20 events

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

Unlock complete timeline
Every record we have

Full data for 673 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 673 Oak St compares to the neighborhood

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

Loading comparables…
Still apartment hunting in SF?

Look up the next apartment before you sign

Search any SF address free — no account needed to see the risk rating.

Simple pricing

Get the complete picture

Every plan unlocks the complete report: all 13 SF datasets, full history, landlord portfolio, and PDF & Excel exports.

Pay once

Report Bundle

For the buildings you're deciding on right now

$10one time

3premium reports

$3.33 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 3 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them
Pay once

Apartment Hunter

For a wide search across many buildings

$39one time

30premium reports

$1.30 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 30 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them

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

Watch 673 Oak St
Get alerted the moment a new violation or complaint is filed.