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303-309 31St Ave

Central Richmond, SF 94121 1402001 3 units · 2 fl · 1921

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Central Richmond — not a forecast
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 303-309 31St 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 1921
2 or more units
3 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 1921
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
Floors2
Year built1921
Total area4,720 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1402001
Ownership

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

Owner name
Mailing address
371 Spinnaker St Foster City CA 94404
Last sale
March 03, 2017

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

303 31st Ave, San Francisco, CA 94121
307 31st Ave, San Francisco, CA 94121
305 31st Ave, San Francisco, CA 94121
309 31st Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-story multi-family residential building at 303-309 31st Avenue in the Central Richmond neighborhood is a 3-unit apartment building owned by Lon Hardeman, constructed in 1921. The property has undergone several significant improvements over its lifetime, including a comprehensive window replacement project in 1999 (50 windows), substantial maintenance work in 2007 to address dry rot damage in the rear stair and garage area ($3,500), and reroofing work in 2003 ($10,280). The most recent electrical upgrade occurred in 2021 with the installation of a 50-amp 240-volt circuit for a sauna heater. Historical modifications include the conversion of two second-floor units into one larger unit in 1987, and structural improvements including cracked stucco repair and foundation anchoring completed in 1990.

The building has experienced two notable routine housing inspections (2001 and 2008) that resulted in multiple violations, primarily related to fire safety and security concerns. These violations, all of which were successfully abated, included issues with fire proofing materials, combustible storage, fire safety tools, and self-closing exterior doors. A roof access fire complaint from 2013 was also resolved on the same day it was reported. Recent external issues primarily involve street maintenance matters such as garbage, debris, and parking violations, with the most recent incidents recorded between late 2023 and early 2024. While there have been no recent building-specific violations or major repairs noted in the past decade, the frequency of street maintenance issues documented through 311 calls suggests ongoing attention to external upkeep is required.

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

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Risk rating

How 303-309 31St 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
33rdpercentile

Out of 2250 buildings in this neighborhood, 1508 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
80%
No DBI
violation
20%
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.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

Director's hearings, owner's portfolio

Escalated DBI enforcement actions across all of this owner's buildings.

12-Month risk forecast
Low failure risk 20%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

303-309 31St Ave apartment reviews

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On the map

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Buildings nearby
8 found
The story over time

303-309 31St Ave event timeline

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

2026
311 Request May 04
Garbage and debris
oil paint other liquid spill wet
311 RequestMay 03
Public works

See all 6 events

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

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Every record we have

Full data for 303-309 31St Ave apartments

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

Side by side

How 303-309 31St Ave compares to the neighborhood

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