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801-803 Columbus Ave

Russian Hill, SF 94133 0074003D 3 units · 3 fl · 1933

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 Russian Hill
At or below average
avg 1.9
1
FewerMore

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

Rent & eviction protection

Is 801-803 Columbus 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 1933
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
NBEACH
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 1933
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
Units3
Floors3
Year built1933
Total area3,840 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0074003D
Ownership

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

Mailing address
Bayangos Dean Lyndon Truste 2110 Hillcrest Rd Redwood City CA 94062
Last sale
070808

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.

803 Columbus Ave, San Francisco, CA 94133
801 Columbus Ave, San Francisco, CA 94133
Augrented Insights
Initial analysis

The three-story mixed-use building at 801-803 Columbus Avenue in Russian Hill, owned by Dean Lyndon Bayangos Revoc, has experienced significant and ongoing issues over the past seven years since its construction in 1933. Most concerning is a recent active violation filed in November 2023, which cites unauthorized construction in the commercial portion of the building including a wet bar, full bathroom, and loft installation. This follows a pattern of unpermitted modifications, with previous complaints in 2026 reporting unauthorized construction work and unauthorized residential occupancy of commercial spaces. The building has recorded four fire incidents in the last seven years, though details of these incidents are not specified in the records.

Recent building permit activity shows attempts to address various issues, including work to comply with a November 2023 Notice of Violation to remove unpermitted installations of showers and stoves in commercial spaces, as well as modifications to restroom accessibility. A cluster of service requests from June 2026 indicates multiple concerns being reported simultaneously, including construction complaints, debris issues, and instances of human waste/urine. The property has generated a significant number of 311 service requests during this period, totaling 189 across various types of complaints. While some of these requests have been resolved, the pattern of violations and complaints suggests ongoing challenges with building use compliance and maintenance.

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

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Risk rating

How 801-803 Columbus 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
41th percentile

Out of 1133 buildings in this neighborhood, 668 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
69%
No DBI
violation
31%
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.

DBI tenant complaints (past 7 years)

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

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

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 42.6%
Moderate concern 47.6%
Severe concern 9.8%
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

801-803 Columbus Ave event timeline

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

2026
311 Request Jul 30
Public works
bsm complaint
Building PermitJul 08
To obtain final inspection for work approved under pa# 202403198154. all work is complete.

See all 15 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 801-803 Columbus 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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