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1397-1399 23Rd Ave

Central Sunset, SF 94122 1778017B 2 units · 2 fl · 1939

A handful of records on file over the last seven years, and our model puts this building at a low risk of further maintenance problems in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Central Sunset — not a forecast
Above average
avg 0.7
1
FewerMore

This building has 1 novs (7y), above the Central Sunset average of 0.7.

Rent & eviction protection

Is 1397-1399 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 1939
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH3
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.

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 1939
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

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
Floors2
Year built1939
Total area2,352 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1778017B
Ownership

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

Mailing address
Chan Helen & Bernard Trutee 1420 Lawton St San Francisco CA 94122
Last sale
December 07, 1999

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

1399 23rd Ave, San Francisco, CA 94122
1397 23rd Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

The two-unit multi-family residential building at 1397-1399 23rd Avenue in San Francisco's Central Sunset neighborhood, owned by the Man C & Helen Chan Revocable Trust, was constructed in 1939 and exhibits classic flats and duplex architecture over two stories. The property has undergone several significant improvements over the years, including multiple window installations between 2001-2003, when a total of 36 vinyl windows were added across different permits, totaling approximately $11,440 in improvements. A more recent and critical incident occurred in July 2020, when a vehicle collided with the building, causing moderate structural damage to the garage area, including a support post displacement and several damaged studs. This incident prompted emergency repairs costing $10,000 to address the damage and comply with subsequent notice of violation requirements, with the work successfully completed by October 2020.

The building's maintenance and violation history shows attention to both routine upkeep and emergency responses, with particular focus on window upgrades and structural maintenance. A notable repair was performed in 1998 to address dry rot in the back stairs, demonstrating ongoing maintenance efforts. While the building itself has had relatively few violations, the surrounding area has experienced periodic issues as evidenced by multiple 311 calls in 2023-2024, primarily concerning street cleaning and parking enforcement matters. These external issues, including recent reports of debris, waste, and blocked driveways, have been consistently addressed by relevant city services, though they are not directly related to the building's condition or management. The most recent building-related actions appear to be primarily focused on external maintenance matters rather than structural or safety concerns, suggesting that the major repairs from the 2020 incident have been properly addressed.

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

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Risk rating

How 1397-1399 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
43rdpercentile

Out of 814 buildings in this neighborhood, 464 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
84%
No DBI
violation
16%
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.

DBI tenant complaints (past 7 years)

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

Neighborhood location

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

NOV rate, owner's portfolio

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

12-Month risk forecast
Low failure risk 16%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1397-1399 23Rd Ave apartment reviews

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On the map

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8 found
The story over time

1397-1399 23Rd Ave event timeline

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

2026
311 Request Jul 02
Other
Damage Property
311 RequestFeb 28
Blocking driveway cite only

See all 8 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1397-1399 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 1397-1399 23Rd Ave compares to the neighborhood

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