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3940-3942 California St

Lake Street, SF 94118 1361028 2 units · 2 fl · 1923

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Lake Street
At or below average
avg 0.6
0
FewerMore

This building has 0 novs (7y), at or below the Lake Street average of 0.6.

Rent & eviction protection

Is 3940-3942 California 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 1923
2 or more units
2 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
Units2
Floors2
Year built1923
Total area2,490 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1361028
Ownership

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

Owner name
Collaco Fmly Trust
Mailing address
Collaco Victor S & Helen Tr 743 31St Ave San Francisco CA 94121
Last sale
000000

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.

3940 California St, San Francisco, CA 94118
3942 California St, San Francisco, CA 94118
Augrented Insights
Initial analysis

The property at 3940-3942 California St is a two-unit, two-story multi-family residential building located in the Lake/Pacific Heights neighborhood, owned by the Collaco Family Trust and constructed in 1923. The building's maintenance history shows several significant structural improvements, including a foundation reinforcement project completed in 1990 that bolted the mudsill to the foundation, and two separate reroofing projects in 1989 and 2003, each costing $4,000. In 2000, a fire alarm system was installed for $2,500, and there was work completed on kitchen renovations in both units, though one permit for this work ultimately expired.

The property has experienced various maintenance and safety-related issues over recent years, with the most pressing being multiple instances of illegal postings, including two cases in late 2024 (one of which was resolved) and ongoing issues with sidewalk parking in 2024. The building's immediate vicinity has been the subject of several 311 calls, primarily related to street and sidewalk maintenance issues such as garbage and debris removal, illegal postings, and parking violations. While many of these cases have been resolved through appropriate city services, a notable pattern of recurring parking enforcement requests suggests ongoing challenges with street parking management in the area. The property's documented improvements focus on structural and safety upgrades, though no recent building permits for major renovations or improvements have been recorded in the past several years.

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

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Risk rating

How 3940-3942 California 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
68th percentile

Out of 660 buildings in this neighborhood, 211 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
86%
No DBI
violation
14%
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.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 78.7%
Moderate concern 12.8%
Severe concern 8.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

3940-3942 California St event timeline

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

No dated public records on file yet.
Every record we have

Full data for 3940-3942 California St apartments

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

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

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