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379-381 27Th Ave

Central Richmond, SF 94121 1406017 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 Central Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 379-381 27Th 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 1923
2 or more units
2 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.

Building characteristics
Units2
Floors2
Year built1923
Total area3,130 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1406017
Ownership

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

Owner name
Arthur T & Bonnie A Sera Re
Mailing address
Sera Arthur T & Bonnie A,tr 379 27Th 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.

379 27th Ave, San Francisco, CA 94121
381 27th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-unit residential building at 379-381 27th Avenue in the Central Richmond neighborhood has undergone significant renovations and faced several notable events in recent years. Built in 1923, this two-story flats and duplex structure owned by Arthur T & Bonnie A Sera Re has seen substantial remodeling work between 2021-2023, including major renovations in 2021 that involved removing lath & plaster, installing insulation, remodeling kitchens and bathrooms, and converting ground floor storage into living space with a family room, full bathroom, and new kitchen. These renovations, costing approximately $250,000, also included the installation of radiant heating systems, extensive electrical work (including numerous lights, switches, receptacles, and appliances), and plumbing updates. More recently, in July 2023, there were complaints filed regarding potential illegal unit conversion, with reports of the two-unit building being improperly marketed as a single-family home, though these complaints are currently listed as not active.

The building's maintenance history includes a complete reroofing in 2007 (cost: $13,650), window installations in 1984, and some sidewalk repairs in 2006. A minor building violation was recorded and quickly resolved in 2009 regarding permanent exterior wooden fixed utility ladders. The property has experienced some contractor-related disturbances, with a complaint filed in July 2022 about excessive construction noise from jackhammering and excavation equipment, though this complaint is now listed as not active. More recently, there have been numerous parking enforcement calls in 2024 regarding blocked driveways, with multiple citations issued between May and October 2024, indicating ongoing issues with parking management around the property.

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

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Risk rating

How 379-381 27Th 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
92th percentile

Out of 2250 buildings in this neighborhood, 180 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
92%
No DBI
violation
8%
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.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

DBI complaints, owner's portfolio

Complaints across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 78.9%
Moderate concern 17.7%
Severe concern 3.4%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

379-381 27Th Ave apartment reviews

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The story over time

379-381 27Th Ave event timeline

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

2025
Building Permit Apr 21
Reroof w/ hot work
$13,700 · Complete
Electrical PermitMar 25
Solarapp+ approval: sa20250324-2454-59-10166-a - installing 10 roof-mounted solar pv modules, 430 watts per module, total no. of rating 4.3 kw. including 1 energy storage unit, of 600 vdc, 15 a, with 13.5 kwh each in capacity. install (10) hanwha q.tron blk m-g2+ 430w

See all 13 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 379-381 27Th 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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