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818 25Th Ave

Central Richmond, SF 94121 1667045 2 units · 2 fl · 1923

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 818 25Th 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 1923
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 built1923
Total area3,405 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1667045
Ownership

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

Owner name
Wilson Tong & Fung Sim Ko R
Mailing address
Tong Wilson & Ko Fung Sim T 818 25Th Ave San Francisco CA 94121
Last sale
102103

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 818 25th Avenue is a 2-story, 2-unit multi-family residential building located in the Central Richmond neighborhood, constructed in 1923. The building's maintenance history shows regular upkeep, including multiple roofing projects (1990, 1989, and 2005) and various street space improvements. Significant interior renovations occurred in 2003, encompassing kitchen and room remodels on different floors, along with electrical upgrades for lighting and receptacles in both kitchen areas and a new basement bathroom installation. However, the building has a concerning history of unauthorized unit modifications and space conversions, particularly regarding the garage area. Between 2002 and 2008, there were multiple complaints and violations regarding allegedly unauthorized construction of living spaces, including a garage conversion and basement modifications with unpermitted windows. These issues were officially abated, but the illegal unit behind the garage allegations appear in both complaint and violation records.

The building's plumbing and electrical systems have received attention, with documented work including sidewalk sewer pipe replacement in 2010. Recent maintenance records include a 2021 tree pruning request related to an overgrown tree near the property. The structure has undergone periodic exterior maintenance, including vinyl siding installation in 1988, and several street space and sidewalk repairs between 2008 and 2017, though these were relatively minor interventions. While many of the historical issues have been officially resolved, the pattern of unauthorized modifications and subsequent corrections raises questions about the building's maintenance history during that period.

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

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Risk rating

How 818 25Th 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
50th percentile

Out of 2250 buildings in this neighborhood, 1125 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.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

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 severity forecast
No violation 80.8%
Moderate concern 12.0%
Severe concern 7.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

818 25Th Ave apartment reviews

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The story over time

818 25Th 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 818 25Th 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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