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423-433 South Van Ness Ave

Inner Mission, SF 94103 3552023 6 units · 1 fl · 1900

This building has more problems than most buildings in this neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Inner Mission
At or below average
avg 2.6
0
FewerMore

This building has 0 novs (7y), at or below the Inner Mission average of 2.6.

Rent & eviction protection

Is 423-433 South Van Ness 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 1900
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
M1
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
Floors1
Year built1900
Total area10,568 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3552023
Ownership

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

Owner name
Brantley Patrick Tidmore &
Mailing address
Tidmore Brantley Patrick & 423 S Van Ness Ave San Francisco CA 94103
Last sale
063099

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.

423 South Van Ness Ave, San Francisco, CA 94103
431 South Van Ness Ave, San Francisco, CA 94103
427 South Van Ness Ave, San Francisco, CA 94103
433 South Van Ness Ave, San Francisco, CA 94103
425 South Van Ness Ave, San Francisco, CA 94103
429 South Van Ness Ave, San Francisco, CA 94103
Augrented Insights
Initial analysis

The six-unit multi-family residential building at 423-433 South Van Ness Ave, located in San Francisco's Inner Mission neighborhood, was built in 1900 and has undergone various significant maintenance and compliance updates over the years. Most recently, in September 2023, the electrical subpanel was replaced, indicating ongoing infrastructure maintenance. The building has a history of addressing safety and compliance issues, with notable improvements including the replacement of 15 front windows in 2013, removal of a billboard and associated repairs in 2008, and substantial structural improvements in 2006 involving reinforcement of basement and first-floor elements. The property experienced multiple fire safety violations in 2020, though records indicate these were addressed promptly.

Historical compliance issues from 2007-2011 included concerns about egress obstructions, combustible storage, and water heater compliance, all of which were resolved by February 2011. The building has undergone various accessibility improvements, including ADA bathroom compliance work in 2006. Recent activity at the property includes regular maintenance and compliance updates, with a current active complaint filed in October 2023 regarding the commercial/business portion of the building. The property has experienced recurring issues with illegal parking and sidewalk cleanliness, as evidenced by multiple 311 calls between 2023 and 2025, though these are primarily concerns affecting the surrounding area rather than the building itself. While there are no active violations on record as of October 2023, the current active complaint from October 2023 and historical fire code violations from 2020 suggest occasional regulatory scrutiny, though these issues were generally addressed promptly.

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

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Risk rating

How 423-433 South Van Ness 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
28th percentile

Out of 2380 buildings in this neighborhood, 1714 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
51%
No DBI
violation
49%
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.

Building size

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

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

12-Month severity forecast
No violation 27.4%
Moderate concern 46.6%
Severe concern 26.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

423-433 South Van Ness Ave event timeline

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

2025
311 Request Jul 08
Garbage and debris
furniture

See all 3 events

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

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Every record we have

Full data for 423-433 South Van Ness Ave apartments

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

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