Free SF apartment background check

271-273 17Th Ave

Central Richmond, SF 94121 1416015 2 units · 3 fl · 1922

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 271-273 17Th 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 1922
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
Floors3
Year built1922
Total area4,614 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1416015
Ownership

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

Owner name
Tan Seong Tian & Len Mei
Mailing address
271 17th Ave San Francisco CA 94121
Last sale
013108

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.

271 17th Ave, San Francisco, CA 94121
273 17th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The three-story, multi-family residential building at 271-273 17th Avenue in the Central Richmond neighborhood, owned by Tan Seong Tian & Len Mei, was originally built in 1922 and contains two units. The building underwent significant transformations between 2000-2004, beginning with cancelled demolition and new construction permits in 2000, followed by an approved major vertical and horizontal addition in April 2001 costing $313,000, completed in 2004. During 2003, several concerning events occurred, including emergency work to brace a collapsing second-floor wall, removal of loose debris, and violations for exceeding the scope of approved plans by demolishing or removing framing members at the front second-floor street side (bay windows) and second-floor partitions, as well as removing approximately 15 feet of partition wall. These violations were ultimately abated in May 2012.

The building received several safety and modernization upgrades, including a new fire sprinkler system installation in 2004 (cost: $14,000) and multiple electrical improvements such as the installation of 53 lights, 33 switches, and two panels during the 2003-2004 renovation period. Plumbing work included the reinstallation of a backflow preventer bypass in 2014. While two complaints were filed in 1993 regarding possible illegal units, these were subsequently closed. The property's maintenance record shows routine street cleaning and handling of abandoned vehicle issues in the surrounding area, with several incidents of abandoned vehicles reported between 2010-2018, though these were not directly related to the building's condition or management.

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

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Risk rating

How 271-273 17Th 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
97th percentile

Out of 2250 buildings in this neighborhood, 68 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
94%
No DBI
violation
6%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Estimated permit spend (past 7 years)

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

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 85.8%
Moderate concern 10.5%
Severe concern 3.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

271-273 17Th Ave event timeline

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

No dated public records on file yet.
Every record we have

Full data for 271-273 17Th 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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