Free SF apartment background check

2430-2440 Folsom St

Inner Mission, SF 94110 3611007 12 units · 3 fl · 1908

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 Inner Mission
Above average
avg 2.6
10
FewerMore

This building has 10 novs (7y), above the Inner Mission average of 2.6.

Rent & eviction protection

Is 2430-2440 Folsom 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
12 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.

Building characteristics
Units12
Floors3
Year built1908
Total area7,526 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3611007
Ownership

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

Owner name
Woo Donald No 2 Family Ltd
Mailing address
Donald Woo 568 16Th Ave San Francisco CA 94118
Last sale
040820

Landlord portfolio

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

Unlock complete report
Multiple entrances & addresses

Included addresses

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

2430 Folsom St, San Francisco, CA 94110
2434 A Folsom St, San Francisco, CA 94110
2440 Folsom St, San Francisco, CA 94110
2436 Folsom St, San Francisco, CA 94110
2430 A Folsom St, San Francisco, CA 94110
2434 Folsom St, San Francisco, CA 94110
2436 A Folsom St, San Francisco, CA 94110
2438 Folsom St, San Francisco, CA 94110
2432 A Folsom St, San Francisco, CA 94110
2440 A Folsom St, San Francisco, CA 94110
2432 Folsom St, San Francisco, CA 94110
2438 A Folsom St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The three-story, 12-unit multi-family residential building at 2430-2440 Folsom Street in the Inner Mission, owned by Woo Donald No 2 Family Ltd, was constructed in 1908 and has undergone significant renovations over the past 15 years. Most recently, in July 2024, Unit A received a comprehensive renovation including kitchen and bathroom updates, wiring improvements, and the replacement of a bathtub with a shower. The building has seen continuous maintenance and upgrades, with multiple renovation projects between 2019-2022 focusing on kitchen and bathroom improvements, window replacements, and electrical system updates. However, there are concerning active violations and complaints that warrant attention, including unresolved issues from 2023 regarding smoke detectors and building compliance affidavits, as well as a 2017 complaint about plumbing and electrical problems including a leaking sink, non-functioning refrigerator, and missing smoke detectors. The property has experienced various maintenance challenges over the years, with past complaints documenting issues such as water damage, rodent problems, heating failures, and ceiling collapse in 2020.

Historical improvements to the building include the installation of 91 vinyl windows in 2010, conversion of overhead service to underground in 2005, and various electrical upgrades including panel replacements and rewiring of units. The building has also undergone multiple HVAC system improvements, with furnace replacements and upgrades documented between 2011-2022. Recent external issues have been limited to street-related matters such as sidewalk cleaning and tree maintenance as recorded in 2024, suggesting ongoing attention to basic building upkeep. While the extensive renovation history indicates significant investment in the property's maintenance and improvement, the presence of active violations related to safety systems and building compliance suggests some ongoing maintenance oversight challenges.

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 2430-2440 Folsom 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
4th percentile

Out of 2380 buildings in this neighborhood, 2285 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
17%
No DBI
violation
83%
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.

DBI tenant complaints (past 7 years)

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

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 14.8%
Moderate concern 42.0%
Severe concern 43.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

2430-2440 Folsom 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

2430-2440 Folsom St event timeline

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

2026
Building Violation (NOV) Feb 24 Serious
Building violation
It is the property owner's responsibility to be present or direct his/her representative to attend, the re-inspection as scheduled on this…
Building Violation (NOV)Feb 24
Building violation

See all 26 events

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

Unlock complete timeline
Every record we have

Full data for 2430-2440 Folsom 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 2430-2440 Folsom St
Get alerted the moment a new violation or complaint is filed.