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547 23Rd Ave

Central Richmond, SF 94121 1566012 2 units · 4 fl · 2003

This building has a substantial enforcement record over the last seven years, and our model sees a moderate chance of more in the next 12 months. Read the records below before you sign. Ask which issues were resolved, get repair commitments in writing, and inspect the unit yourself.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Central Richmond — not a forecast
Above average
avg 0.5
27
FewerMore

This building has 27 novs (7y), above the Central Richmond average of 0.5.

Rent & eviction protection

Is 547 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 2003
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

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 2003
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
May be covered by AB 1482. The building is old enough for the statewide rent cap (5% + regional CPI, capped at 10% per year) and just-cause protection after 12 months of tenancy.

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
Floors4
Year built2003
Total area4,375 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1566012
Ownership

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

Owner name
Mailing address
547 23rd Ave San Francisco CA 94121
Last sale
May 24, 2000

Landlord portfolio

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

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Augrented Insights
Initial analysis

The four-story multi-family residential building at 547 23rd Avenue in the Central Richmond neighborhood, owned by Tu Shuzhen, has been experiencing persistent maintenance and structural issues since its construction in 2003. The building, which contains two units, has faced recurring water damage problems over several years, including significant violations in 2019-2023 related to water leaks, mold, and ceiling issues. Most recently, in October 2024, active complaints reported mold presence, leaking ceilings, pest issues (including mice), and staircase code compliance concerns. Building maintenance history reveals multiple repair efforts, with the most recent permit from November 2024 addressing sheetrock repairs, mildew removal, flooring replacement, drainage issues, and smoke detector reinstallation, totaling $1,500.

Earlier historical records indicate various construction challenges, including foundation work in 2004, window modifications in 2003, and multiple permits related to shoring and structural adjustments in the early 2000s. The property has also experienced building code violations related to heating systems, deck repairs, and water damage, with most violations being abated by June 2023. External issues have been documented through 311 calls regarding garbage, debris, and sidewalk maintenance concerns. Building safety incidents include two fire department responses, one for a gas leak and one false alarm, neither resulting in civilian injuries. Despite numerous repair attempts and permit approvals, the building continues to exhibit ongoing maintenance challenges, particularly regarding water damage and its effects on building conditions and resident comfort.

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

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Risk rating

How 547 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

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
15thpercentile

Out of 2250 buildings in this neighborhood, 1912 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
67%
No DBI
violation
33%
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.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Notices of Violation (past 7 years)

DBI issued Notices of Violation at this address over the last 7 years — a direct record of code enforcement activity.

12-Month risk forecast
Moderate failure risk 33%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

547 23Rd Ave apartment reviews

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On the map

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8 found
The story over time

547 23Rd Ave event timeline

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

2025
Planning Record Mar 24
applicant does not live at property but is conducting STR
Closed - No Violation
Planning RecordJan 09
Subpoena - 547 23rd

See all 15 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 547 23Rd Ave apartments

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

Side by side

How 547 23Rd Ave compares to the neighborhood

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