Free SF apartment background check

633 Oak St

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

This building has significantly more problems than most nearby buildings. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

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 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.

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).

Owner name
Sf Multifamily Iii Property
Mailing address
Ballast Investments 49 Powell St Fl 4 San Francisco CA 94102
Last sale
031521

Landlord portfolio

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

Unlock complete report
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

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

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
15th percentile

Out of 1027 buildings in this neighborhood, 873 are predicted to be safer.

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 severity forecast
No violation 40.7%
Moderate concern 48.8%
Severe concern 10.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

633 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.

Buildings nearby
Loading…
The story over time

633 Oak St event timeline

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

2025
Electrical Permit Nov 25
Online electrical permit: 60 of buildings of 6 dwelling units or less. replacement of fire alarm system with low frequency horn sounders and wireless monitoring.
Complete
Building PermitJul 23
Replace fire alarm system to meet sf/ca code and add lf horns in units and add wireless ratio monitor.

See all 20 events

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

Unlock complete timeline
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.

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.

Report Bundle

For the buildings you're deciding on right now

$10 one-time

~$3.33 per building. No subscription ever. Each credit unlocks one building's premium report for 30 days.

  • 3 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 3 Reports — $10

Apartment Hunter

For a wide search across many buildings

$39 one-time

30 reports — ~$1.30 each. No subscription ever.

  • 30 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 30 Reports — $39

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

Watch 633 Oak St
Get alerted the moment a new violation or complaint is filed.