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251-255 14Th Ave

Central Richmond, SF 94118 1419010 3 units · 3 fl · 1908

This building has more problems than most buildings in this neighborhood. 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 251-255 14Th 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 1908
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.

Building characteristics
Units3
Floors3
Year built1908
Total area4,332 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1419010
Ownership

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

Owner name
Mahr Stephen G & Kam Chu 19
Mailing address
Stephen G & Kam Chu Mahr 1422 27Th Ave San Francisco CA 94122
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.

255 14th Ave, San Francisco, CA 94118
251 14th Ave, San Francisco, CA 94118
253 14th Ave, San Francisco, CA 94118
Augrented Insights
Initial analysis

The 3-unit, 3-story multi-family residential building at 251-255 14th Avenue in the Central Richmond neighborhood, built in 1908, has undergone several significant maintenance and safety improvements over the years. The most recent major upgrade was a 200-amp electrical service upgrade completed in 2017, demonstrating ongoing infrastructure maintenance. In 2006, the building experienced multiple issues that were subsequently addressed, including electrical work in units 251 and 253 to comply with notices of violation, roof repairs costing $7,080, and various safety violations such as electrical outlet repairs, door hardware replacements, and mold remediation, all of which were abated by August 2006. Earlier maintenance work included a reroofing project in 1993, the replacement of dilapidated rear yard stairs in 2003, and a code compliance upgrade in 1987.

The building has had minimal recent issues, with the most recent concerns being a tree inspection request in July 2024 and an open pavement defect report from August 2023. Historical records show various abandoned vehicle reports in the vicinity between 2015 and 2020, and one encampment issue in 2017, though these external factors are not directly related to the building's condition. While the property experienced significant maintenance challenges in 2006, the subsequent repairs and upgrades suggest improved building management practices. The current permit history shows minimal recent activity, with only street space permits issued in 2012, indicating routine use of public space rather than any major building modifications.

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

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Risk rating

How 251-255 14Th 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
26th percentile

Out of 2250 buildings in this neighborhood, 1665 are predicted to be safer.

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

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

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.

12-Month severity forecast
No violation 57.4%
Moderate concern 31.5%
Severe concern 11.1%
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

251-255 14Th Ave event timeline

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

2025
Planning Record Sep 04
Block Book Notice
Closed - Approved

See all 1 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 251-255 14Th 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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