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455-457 19Th Ave

Central Richmond, SF 94121 1525011 2 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 455-457 19Th 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
2 units
Property type
Multi-Family Residential
Zoning
RM1
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
Units2
Floors2
Year built1921
Total area4,252 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1525011
Ownership

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

Mailing address
Tim & Linda Wong, Trustee 457 19Th Ave San Francisco CA 94121
Last sale
October 13, 1992

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.

455 19th Ave, San Francisco, CA 94121
457 19th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-unit residential building at 455-457 19th Avenue in the Central Richmond district is a two-story duplex constructed in 1921, currently owned by the Tim & Linda Wong Trust. The property has a history of significant remodeling and compliance issues, particularly regarding unit conversions and unauthorized modifications. In the late 1990s, there was a proposed horizontal addition with an estimated cost of $115,000, followed by several building permit modifications between 2002-2003 involving bathroom relocations and hallway modifications. A notable compliance issue occurred in 2001 when illegal unit appliances were documented, including a stove and refrigerator in the garage level, leading to enforcement actions. In 2014, a similar complaint was filed regarding illegal unit conditions. The building has also experienced unauthorized construction work, as evidenced by a 2007 complaint about an unpermitted 12-foot ground level extension, though this was resolved within a month.

More recently, the property has been subject to numerous parking enforcement issues, with eight documented instances of blocked driveways between March 2023 and September 2024, resulting in several citations being issued. These parking enforcement calls indicate ongoing challenges with vehicle access to the property, though they are not directly related to the building's structural or safety conditions. The building's permit and complaint history suggests a pattern of unauthorized modifications and compliance issues, though many of these matters appear to have been resolved through subsequent permits or enforcement actions. As of October 2023, there are no active building violations or permit applications on file, indicating current compliance with building regulations.

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

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Risk rating

How 455-457 19Th 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
95thpercentile

Out of 2250 buildings in this neighborhood, 112 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
93%
No DBI
violation
7%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Estimated permit spend (past 7 years)

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

12-Month risk forecast
Low failure risk 7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

455-457 19Th Ave apartment reviews

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On the map

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The story over time

455-457 19Th Ave event timeline

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

2026
311 Request Mar 27
Blocking driveway cite only
Parking Enforcement

See all 2 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 455-457 19Th Ave apartments

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

Side by side

How 455-457 19Th Ave compares to the neighborhood

This building against comparable properties in Central Richmond. Toggle filters to narrow the peer group.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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