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1231 11Th Ave

Inner Sunset, SF 94122 1739005 4 units · 2 fl · 1906

This building has a substantial enforcement record over the last seven years, and our model sees a moderate chance of more in the next 12 months. Read the records below before you sign. Ask which issues were resolved, get repair commitments in writing, and inspect the unit yourself.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Inner Sunset — not a forecast
Above average
avg 1.1
14
FewerMore

This building has 14 novs (7y), above the Inner Sunset average of 1.1.

Rent & eviction protection

Is 1231 11Th 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 1906
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH2
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 1906
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
Units4
Floors2
Year built1906
Total area3,870 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1739005
Ownership

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

Mailing address
Tuan Duc Vo Trustee 1112 Masonic Ave San Francisco CA 94117
Last sale

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 4-unit, 2-story multi-family residential building at 1231 11th Avenue in the Inner Sunset was built in 1906 and has experienced several significant maintenance and safety issues over its history. Most recently, in 2020, the building faced serious problems with rodent infestation, with complaints filed in February and November of that year. There were also concerns about a malfunctioning front door lock reported in November 2020, though this complaint was eventually resolved. In 2017-2018, the property underwent stair repairs following a complaint about maintenance issues, including work on back door landings, fire proofing, smoke enclosure doors, and addressing combustible storage concerns. The building has a history of stair and structural maintenance, with earlier repairs documented in the 1980s and 1990s, including foundation work, dry rot repairs, and stair reinforcement.

The property has undergone multiple routine inspections and faced various building code violations, most notably a comprehensive violation in 2001 that required remediation of multiple safety issues, including fire proofing, emergency exit stairs, and sanitation concerns. While many of these historical violations appear to have been resolved, there are ongoing maintenance and safety considerations, particularly regarding building security and pest control. Recent plumbing improvements were completed in 2017, addressing kitchen sink and piping issues in all four units. The building's maintenance history shows a pattern of addressing structural and safety concerns, though with some recurring issues related to building systems and security.

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

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Risk rating

How 1231 11Th 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
8thpercentile

Out of 1493 buildings in this neighborhood, 1374 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
48%
No DBI
violation
52%
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 risk forecast
Moderate failure risk 52%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1231 11Th Ave apartment reviews

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On the map

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The story over time

1231 11Th Ave event timeline

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

2026
Building Permit Feb 06
Unit #2: work confined to unit 2 only. restoration of bathroom and kitchen following hazardous tenant damage. emergency plumbing repair and in place replacement of fixture & appliances including laundry appliance hookup adjacent to (e) utilities. no structural change layout unchanged. work..
$15,000 · Issued
DBI ComplaintJan 29
Date last observed: 27-jan-26; identity of person performing the work: tisa vo; floor: 2; unit: 2; exact location: main bldg; building type: residence/dwelling plumbing installation without permit; electrical work being performed w/o permit; ; additional information: bathroom and kitchen were stripped to framing and completely redone. no permits have been posted. work has been going on for several months.;

See all 11 events

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

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Every record we have

Full data for 1231 11Th Ave apartments

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

Side by side

How 1231 11Th Ave compares to the neighborhood

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

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