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483-485 18Th Ave

Central Richmond, SF 94121 1526012 2 units · 2 fl · 1916

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 483-485 18Th 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 1916
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
Floors2
Year built1916
Total area2,840 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1526012
Ownership

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

Owner name
Tom Wai Fong
Mailing address
454 22nd Ave San Francisco CA 94121
Last sale
100495

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.

483 18th Ave, San Francisco, CA 94121
485 18th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-unit residential building at 483-485 18th Avenue in San Francisco's Central Richmond neighborhood has a documented history spanning several decades, with both regular maintenance and some infrastructure issues. Built in 1916, this two-story flats and duplex structure is currently owned by Tom Wai Fong. The building underwent an aluminum window installation in 1987, and more recently, there was a street space permit issued in 2008 for a nominal fee of $1. Since 2022, several street cleaning and maintenance issues have been reported near the building, including multiple instances of garbage and debris (with the most recent in October 2024), though these primarily relate to street conditions rather than building-specific concerns. A notable incident occurred in March 2022 involving a tree that was allegedly damaging property, but after inspection by an arborist, it was determined to pose no immediate safety risk and would be scheduled for pruning during the next maintenance cycle.

The building has experienced some infrastructure challenges, most significantly a sewage backup issue in May 2021 that was resolved by PUC Sewer Operations. The property has also been affected by parking-related incidents in June 2020, involving two separate illegal parking complaints for different vehicles, though one of these could not be validated by responding officers. While the building's age suggests regular maintenance is necessary, the documented permits and resolved service requests indicate basic habitability issues have been addressed, though the frequency of street cleaning-related complaints (with at least five separate incidents from 2022 to 2024) may suggest some ongoing challenges with waste management in the immediate vicinity.

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

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Risk rating

How 483-485 18Th 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
62th percentile

Out of 2250 buildings in this neighborhood, 855 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
85%
No DBI
violation
15%
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 82.5%
Moderate concern 12.6%
Severe concern 4.9%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

483-485 18Th Ave apartment reviews

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The story over time

483-485 18Th Ave event timeline

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

2026
311 Request Apr 27
Garbage and debris
mattress

See all 2 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 483-485 18Th 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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