Free SF apartment background check

140 Duboce Ave

Mission Dolores, SF 94103 3502024 15 units · 3 fl · 1928

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 Mission Dolores
Above average
avg 2.9
24
FewerMore

This building has 24 novs (7y), above the Mission Dolores average of 2.9.

Rent & eviction protection

Is 140 Duboce Ave 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 1928
2 or more units
15 units
Property type
Multi-Family Residential
Zoning
RM2
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1928
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units15
Floors3
Year built1928
Total area9,240 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3502024
Ownership

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

Owner name
Mailing address
Steven C. Thrower 1 Bush St Ste 900 San Francisco CA 94104
Last sale
030819

Landlord portfolio

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

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Augrented Insights
Initial analysis

140 Duboce Avenue is a 15-unit multi-family residential building constructed in 1928, located in the Mission Dolores neighborhood. The property underwent significant modifications between 2018 and 2023, including the conversion of a 2-car garage into 4 ADUs completed in 2020. This was followed by various unit renovations, including comprehensive upgrades to Units 101, 102, and 204 between 2021-2022, involving kitchen relocations, bathroom rehabilitations, and washer/dryer installations. The building has a completed soft-story retrofit (Tier 4) from 2018, demonstrating seismic safety compliance.

Recent and concerning issues include a March 2024 complaint about water intrusion and widespread mold problems affecting two bedrooms and living room areas in Unit 205, which reportedly worsened despite property management's response. The building's fire safety systems have received recent attention, with multiple permits in 2023-2024 related to fire sprinkler installations, monitoring systems, and fire alarm upgrades to comply with current safety codes. Historical building violations from 2003 (now abated) cited issues with fire escape ladders, exterior door self-closing devices, and gas meter instructions, while a 2023 complaint noted multiple fire safety concerns in common areas requiring attention.

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

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Risk rating

How 140 Duboce Ave'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
8th percentile

Out of 799 buildings in this neighborhood, 735 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
23%
No DBI
violation
77%
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.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

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 10.3%
Moderate concern 45.5%
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

140 Duboce Ave apartment reviews

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The story over time

140 Duboce Ave event timeline

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

2026
DBI Complaint May 11
Floor is damaged by water, broken window, oven is not working properly
Housing Inspection Services
311 & DBI ComplaintMay 08
Public health

See all 32 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 140 Duboce Ave 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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