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4272-4280 23Rd St

Noe Valley, SF 94114 2773014 9 units · 3 fl · 1913

This building has far more open problems than almost any other in the neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Noe Valley
Above average
avg 1.2
11
FewerMore

This building has 11 novs (7y), above the Noe Valley average of 1.2.

Rent & eviction protection

Is 4272-4280 23Rd St 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 1913
2 or more units
9 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
Units9
Floors3
Year built1913
Total area10,530 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2773014
Ownership

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

Owner name
Rabb Daniel
Mailing address
1 Sansome St Ste 1500 San Francisco CA 94104
Last sale
011999

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.

4274 23rd St, San Francisco, CA 94114
4274 A 23rd St, San Francisco, CA 94114
4280 23rd St, San Francisco, CA 94114
4278 23rd St, San Francisco, CA 94114
4272 23rd St, San Francisco, CA 94114
4276 23rd St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The 9-unit, 3-story multi-family residential building at 4272-4280 23rd Street in Noe Valley, built in 1913 and owned by Daniel Rabb, has undergone several significant improvements and faced various challenges over recent years. Most notably, the property completed a mandatory soft-story seismic retrofit in 2017 at a cost of $135,000, demonstrating compliance with San Francisco's seismic safety requirements. The building has seen substantial unit improvements in 2021, including bathroom remodels in Units B and C, with associated plumbing and electrical work totaling approximately $30,000. A reroofing project was also completed in 2021 for $33,800.

The building has experienced recurring maintenance issues that have impacted tenant quality of life. Most recently, in 2024, there was a complaint about 9 weeks without heat in the building. In 2018, multiple complaints were filed regarding mold, rotting, and drainage issues in the light well affecting Units 1 and 2, though these were eventually resolved. Historical violations from 2000-2007 included various interior maintenance issues such as water damage, plumbing problems, and lead paint concerns, all of which were abated by March 2007. The building has undergone regular maintenance and inspections, including fire safety checks for extinguishers which have generally shown "Condition Corrected" or "No Merit" findings.

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

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Risk rating

How 4272-4280 23Rd St'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
3th percentile

Out of 1879 buildings in this neighborhood, 1823 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
29%
No DBI
violation
71%
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.

Number of units

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

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 21.7%
Moderate concern 52.4%
Severe concern 25.9%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

4272-4280 23Rd St event timeline

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

2026
Fire Complaint Feb 02
Sprinkler/Standpipe Systems
Violation Issued

See all 21 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4272-4280 23Rd St 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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