Free SF apartment background check

1370-1372 21St Ave

Central Sunset, SF 94122 1775032 2 units · 2 fl · 1925

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 Sunset
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Central Sunset average of 0.7.

Rent & eviction protection

Is 1370-1372 21St 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 1925
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 built1925
Total area3,000 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1775032
Ownership

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

Owner name
Chin Debra
Mailing address
1370 21st Ave San Francisco CA 94122
Last sale
070894

Landlord portfolio

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

Unlock complete report
Multiple entrances & addresses

Included addresses

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

1370 21st Ave, San Francisco, CA 94122
1372 21st Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

This two-unit residential building, located at 1370-1372 21st Avenue in San Francisco's Central Sunset neighborhood, was constructed in 1925 and is owned by Debra Chin. The property has undergone several significant improvements over the past 15 years, with the most recent being window upgrades completed in March 2024 costing $25,000, replacing old window panels with new Marvin aluminum clad wood windows. Other notable improvements include a reroofing project initiated in September 2021 ($23,200), window replacements in 2016, and a bathroom remodel in unit 1370 completed in 2008 which included updates to fixtures, lighting, and windows.

The building has experienced some compliance issues, with two complaints filed in 2014 regarding unauthorized construction work and window replacements. The property has also faced maintenance challenges, particularly in 2023-2024, with multiple reports of driveway blocking incidents, though few resulted in citations. Infrastructure issues in the surrounding area are documented via 311 calls, including problems with pavement defects and sidewalk collapse, with some matters remaining open as of mid-2023. The building's maintenance and improvement record shows regular updates to windows and basic systems, though the concentration of driveway-related complaints suggests ongoing challenges with parking management in the vicinity.

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

Free account unlocks the full analysis — plus 2× more records across all data categories and the complete landlord portfolio.
Risk rating

How 1370-1372 21St 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
96th percentile

Out of 814 buildings in this neighborhood, 33 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
93%
No DBI
violation
7%
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.

Neighborhood location

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

Building age

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

Notices of Violation, owner's portfolio

DBI NOVs across all buildings this owner is registered on — a signal of systemic maintenance issues across the portfolio.

12-Month severity forecast
No violation 90.9%
Moderate concern 7.2%
Severe concern 1.9%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1370-1372 21St Ave apartment reviews

Real experiences from people who have lived here. Share yours to help other renters decide.

Share your experience — Help other renters by leaving an honest apartment review

Loading reviews…

On the map

Compare nearby alternatives

This building and nearby alternatives, color-coded by risk level. Click any marker to explore.

Buildings nearby
Loading…
The story over time

1370-1372 21St Ave event timeline

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

2024
Building Permit Mar 21
Old windows panels top and bottom to be removed. install marvin aluminum clad wood windows of the same double hung type as original.
$25,000 · Complete
Planning RecordMar 21
Replace 9 (E) double hung wood windows with 9 (N) aluminum wood clad double hung windows with divided lites on the top half, no ogee lungs.

See all 3 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

Unlock complete timeline
Every record we have

Full data for 1370-1372 21St Ave apartments

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

Still apartment hunting in SF?

Look up the next apartment before you sign

Search any SF address free — no account needed to see the risk rating.

Simple pricing

Get the complete picture

Every plan unlocks the complete report: all 13 SF datasets, full history, landlord portfolio, and PDF & Excel exports.

Report Bundle

For the buildings you're deciding on right now

$10 one-time

~$3.33 per building. No subscription ever. Each credit unlocks one building's premium report for 30 days.

  • 3 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 3 Reports — $10

Apartment Hunter

For a wide search across many buildings

$39 one-time

30 reports — ~$1.30 each. No subscription ever.

  • 30 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 30 Reports — $39

Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

Watch 1370-1372 21St Ave
Get alerted the moment a new violation or complaint is filed.