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525 23Rd Ave

Central Richmond, SF 94121 1566006 2 units · 2 fl · 1915

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 525 23Rd 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 1915
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 built1915
Total area2,500 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1566006
Ownership

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

Owner name
Ford Frederick Christopher
Mailing address
525 23rd Ave San Francisco CA 94121
Last sale
021814

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.

525 23rd Ave, San Francisco, CA 94121
525 A 23rd Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 525 23rd Avenue is a two-unit, two-story multi-family residential building located in the Central Richmond neighborhood, owned by Frederick Christopher Ford and constructed in 1915. The building has undergone significant maintenance and improvements over the past two decades, with the most recent major work filed as of December 2024 involving comprehensive facade modifications, including a new bay window, enclosed entry stair, new doors, and various interior upgrades including bedroom and bathroom remodeling with a new gas fireplace. A complete reroofing project was successfully completed in July 2024 at a cost of $20,978. The building's maintenance history shows attention to structural and safety improvements, including electrical system upgrades, bathroom remodeling, and various interior renovations between 2003 and 2008, though several earlier permits from the 2003-2006 period expired or were withdrawn.

The property has experienced some infrastructure challenges, including a sewage backup incident in February 2024, which was promptly addressed and resolved. There is a documented history of parking-related complaints near the property, with multiple citations issued for blocked driveways between 2021-2024. A notable violation occurred in 2005 regarding permit suspension, though this was resolved by January 2006. Recent planning records indicate ongoing improvements to the building's facade and parking arrangement, with approvals for new windows, structural repairs, and the addition of parking spaces. The property has been subject to various inspections and permits for electrical, plumbing, and structural work over the years, demonstrating regular maintenance and upgrading of essential systems.

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

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Risk rating

How 525 23Rd 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
36th percentile

Out of 2250 buildings in this neighborhood, 1440 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
82%
No DBI
violation
18%
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.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

12-Month severity forecast
No violation 65.7%
Moderate concern 19.4%
Severe concern 14.9%
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

525 23Rd Ave event timeline

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

2026
Building Permit Apr 07
Addressing permit only: purpose of this permit is to retire the address 525 a 23rd ave. 523 23rd ave will become the new address for the rear unit. link to apn 1566/006
$1 · Issued
Plumbing PermitMar 25
Work category: 1m; installing flue and 1 fireplace

See all 9 events

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

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Every record we have

Full data for 525 23Rd 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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