Free SF apartment background check

421 14Th Ave

Central Richmond, SF 94118 1530005 6 units · 3 fl · 1927

This building has significantly more problems than most nearby buildings. 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 421 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 1927
2 or more units
6 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
Units6
Floors3
Year built1927
Total area5,800 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1530005
Ownership

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

Owner name
O'Sullivan/Ryan Fmly Tr
Mailing address
O'sullivan Gerard & Ryan Jo 2625 23Rd Ave San Francisco CA 94116
Last sale
082817

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 6-unit, 3-story apartment building at 421 14th Ave in the Central Richmond neighborhood was constructed in 1927 and has undergone several significant improvements over the years. Most notably, the building completed its mandatory soft-story retrofit in 2014 (at a cost of $95,000), demonstrating commitment to seismic safety. A recent important upgrade was the fire alarm system replacement completed in 2022 ($15,000) to meet current safety standards. The property has seen consistent maintenance and improvements, including bathroom remodels in units 2 and 5 (2017), vinyl siding installation (2002-2003), and foundation work (1988).

The building has maintained an active response to violations and safety concerns, with all known violations from a 2002 housing inspection being promptly addressed within two months. These violations included issues with lead paint, fire escape maintenance, and various interior surface problems, all of which were abated by August 2002. More recent records show regular maintenance and infrastructure updates, including sewer repairs (2018) and various plumbing and electrical improvements. Although there have been some neighborhood concerns documented through 311 calls in recent years (2020-2024), these are primarily related to street conditions and public space issues rather than building-specific problems. The property has experienced two minor fire-related incidents recorded as "Assist invalid" and "Public service," with no civilian injuries reported in either case.

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

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Risk rating

How 421 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
16th percentile

Out of 2250 buildings in this neighborhood, 1890 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
68%
No DBI
violation
32%
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.

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 62.4%
Moderate concern 25.5%
Severe concern 12.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

421 14Th Ave apartment reviews

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The story over time

421 14Th Ave event timeline

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

2025
DBI Complaint May 27
Date last observed: 12-may-25; time last observed: 0600; identity of person performing the work: landlord/owner; floor: garage; unit: garage; exact location: garage; building type: residence/dwelling plumbing leak; work w/o permit; work beyond scope of permit; work being done in dangerous manner; ; additional information: wall built in 2020 continuous leaking plumbing from ceiling 5/13/2025;
Housing Inspection Services
DBI ComplaintMay 15
Date last observed: 12-may-25; time last observed: 0600; identity of person performing the work: landlord/owner; floor: garage; unit: garage; exact location: garage; building type: residence/dwelling plumbing leak; work w/o permit; work beyond scope of permit; work being done in dangerous manner; ; additional information: wall built in 2020 continuous leaking plumbing from ceiling 5/13/2025;

See all 5 events

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

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Every record we have

Full data for 421 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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