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430-432 Warren Dr

Forest Knolls, SF 94131 2635041 12 units · 2 fl · 1961

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 Forest Knolls
At or below average
avg 1.9
1
FewerMore

This building has 1 novs (7y), at or below the Forest Knolls average of 1.9.

Rent & eviction protection

Is 430-432 Warren Dr 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 1961
2 or more units
12 units
Property type
Multi-Family Residential
Zoning
RM4
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
Floors2
Year built1961
Total area8,960 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2635041
Ownership

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

Owner name
S&P Ng Fmly Tr 2007
Mailing address
Ng Samuel Yeung Yin Patrici 950 Stockton St Ste 403 San Francisco CA 94108
Last sale
062498

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

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

432 Warren Dr, San Francisco, CA 94131
430 Warren Dr, San Francisco, CA 94131
Augrented Insights
Initial analysis

The 12-unit multi-family residential building at 430-432 Warren Drive, located in Forest Knolls and built in 1961, has undergone several significant structural and safety improvements over recent years. Most notably, the property experienced a serious incident in 2021 when Unit #1 suffered fire damage, followed by water and smoke damage, requiring extensive repairs that were completed in 2022 at a cost of $130,000. This renovation included comprehensive updates to the bathroom and kitchen, along with associated plumbing and electrical work. In terms of seismic safety, the building completed mandatory soft-story retrofit work in 2017 (at a cost of $84,000), achieving compliance with San Francisco building codes.

The building's maintenance history shows attention to basic infrastructure, including a roof replacement in 1992 (completed) and a 2021 main lateral repair project. The property has undergone routine housing inspections over the years, with a significant cluster of violations noted in 2003 related to fire safety (including stair repairs and egress obstruction) and missing smoke enclosure door closers, though these were abated by August 2003. While the building has had several graffiti incidents and garbage/cleanup issues reported through 311 calls, these are generally not indicative of systemic problems. The most recent building-related issues primarily revolve around exterior maintenance and debris cleanup rather than structural or safety concerns. The current ownership, under S&p Ng Fmly Tr 2007, has demonstrated compliance with major safety requirements such as the soft-story retrofit program, which is now complete and certified.

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

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Risk rating

How 430-432 Warren Dr'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
12th percentile

Out of 50 buildings in this neighborhood, 44 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
34%
No DBI
violation
66%
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.

Building size

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

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 25.9%
Moderate concern 29.8%
Severe concern 44.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

430-432 Warren Dr event timeline

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

2023
311 Request Oct 25
Bulky items
Furniture

See all 9 events

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

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Every record we have

Full data for 430-432 Warren Dr apartments

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

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