Free SF apartment background check

4950 California St

Lake Street, SF 94118 1371024 12 units · 3 fl · 1923

This building has significantly more problems than most nearby buildings. 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
Above average
avg 0.6
37
FewerMore

This building has 37 novs (7y), above the Lake Street average of 0.6.

Rent & eviction protection

Is 4950 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
12 units
Property type
Multi-Family Residential
Zoning
RM3
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 built1923
Total area10,950 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1371024
Ownership

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

Owner name
Antonio & Rita Castellucci
Mailing address
Antonio Castellucci & Rita 1757 Union St San Francisco CA 94123
Last sale
041409

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 12-unit, 3-story multi-family residential building at 4950 California Street in the Lake-Presidio neighborhood, owned by Antonio & Rita Castellucci, has been in operation since 1923 and is currently facing several notable compliance and safety issues. Most pressing among these is the building's non-compliant status with the mandatory Soft Story Retrofit program (as Tier 4) established in 2018, for which no permit application has been submitted. More recently, there have been serious window safety concerns, with two active complaints in 2022 regarding a dangerously dangling window sash on the 3rd floor that remains unresolved as of October 2023. The building's fire safety systems have required ongoing attention, with past violations related to exits, fire escapes, and alarm systems noted between 2018-2024, though most have been corrected. The property experienced a significant cluster of fire safety violations in 2003 that were subsequently abated in 2004, including issues with self-closing doors, fire proofing, smoke enclosure doors, combustible storage, sprinkler requirements, and fire escape maintenance.

Recent improvements include a major renovation in Unit 3 ongoing as of August 2024, encompassing kitchen and bathroom updates with associated electrical and plumbing work. The building's mechanical systems have seen attention, with a new steam boiler installation and flue vent replacement completed in 2019 following a Notice of Violation. Multiple 311 calls regarding garbage, debris, and public health issues have been recorded between October 2024 and January 2025, suggesting some ongoing maintenance and cleanliness challenges in the immediate vicinity. The property has undergone routine inspections over the years, with the most recent documented in 2008, and has maintained basic compliance with housing codes, though the outstanding Soft Story Retrofit requirement remains the most significant regulatory gap.

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

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Risk rating

How 4950 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
11th percentile

Out of 660 buildings in this neighborhood, 587 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
55%
No DBI
violation
45%
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.

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.

12-Month severity forecast
No violation 15.5%
Moderate concern 77.4%
Severe concern 7.0%
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

4950 California St event timeline

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

2026
311 Request May 19
Liner issue damaged missing
Litter Receptacle Maintenance
Plumbing PermitApr 15
Unit#3: kitchen, bathroom, laundry

See all 32 events

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

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Every record we have

Full data for 4950 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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