Free SF apartment background check

2401-2403 24Th St

Inner Mission, SF 94110 4262030 4 units · 3 fl · 1978

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 Inner Mission
Above average
avg 2.6
17
FewerMore

This building has 17 novs (7y), above the Inner Mission average of 2.6.

Rent & eviction protection

Is 2401-2403 24Th 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 1978
2 or more units
4 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
Units4
Floors3
Year built1978
Total area4,960 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot4262030
Ownership

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

Owner name
Tin Ruth Yanyan
Mailing address
2323 Noriega St Ste 208 San Francisco CA 94131
Last sale
000000

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.

2401 24th St, San Francisco, CA 94110
2403 24th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The property at 2401-2403 24th Street in the Inner Mission is a 4-unit, 3-story mixed-use building built in 1978, currently owned by Tin Ruth Yanyan. The building has a concerning history of maintenance issues and potential code violations, with the most pressing current concerns documented in October 2024, including defective smoke detectors, unapproved ADU conversions, and hazardous living conditions suggesting illegal SRO usage. Recent permit activity shows work occurring without proper approval, particularly regarding dry rot repairs and suspected unauthorized construction modifying the building's existing structure. The building has faced multiple enforcement actions since 2015 regarding unauthorized unit conversions and illegal office spaces, with planning records indicating attempts to revert unpermitted offices back to residential use.

The property's maintenance history shows recurring issues with structural elements, including dry rot repairs in 2011 and a 2023 permit filing for exterior wall repairs. Historical violations from 2000 and 2017 reveal past problems with heating systems, fire safety equipment, and weatherproofing of siding, though these were marked as abated. The building's deteriorated condition has been noted in multiple complaints throughout 2023-2024, including reports of falling roof structures and debris management issues, with several complaints labeled as "blight." While some past violations and complaints have been resolved, many recent issues remain active or unresolved, particularly regarding safety systems, structural integrity, and unauthorized modifications, suggesting ongoing maintenance challenges that may affect resident safety and comfort.

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 2401-2403 24Th 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
1th percentile

Out of 2380 buildings in this neighborhood, 2356 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
12%
No DBI
violation
88%
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.

Number of units

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

Director's hearing rate, owner's portfolio

Per-building rate of director's hearings across the owner's portfolio.

12-Month severity forecast
No violation 5.0%
Moderate concern 77.7%
Severe concern 17.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

2401-2403 24Th St 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

2401-2403 24Th St event timeline

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

2026
311 Request May 04
Garbage and debris
other bagged boxed contained garbage
DBI ComplaintApr 20
Date last observed: 19-apr-26; unit: garage; exact location: garage; building type: both illegal unit; illegal change of use; ; additional information: new adu added in garage;

See all 22 events

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

Unlock complete timeline
Every record we have

Full data for 2401-2403 24Th St 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 2401-2403 24Th St
Get alerted the moment a new violation or complaint is filed.