Free SF apartment background check

3409-3421 23Rd St

Inner Mission, SF 94110 3644020 21 units · 2 fl · 1923

This building has a substantial enforcement record over the last seven years, and our model predicts continuing maintenance failures over 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 Inner Mission — not a forecast
Above average
avg 2.7
17
FewerMore

This building has 17 novs (7y), above the Inner Mission average of 2.7.

Rent & eviction protection

Is 3409-3421 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 1923
2 or more units
21 units
Property type
Multi-Family Residential
Zoning
VALEN
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 1923
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
Units21
Floors2
Year built1923
Total area19,632 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3644020
Ownership

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

Owner name
Mailing address
1717 Powell St Ste 300 San Francisco CA 94133
Last sale
September 16, 2014

Landlord portfolio

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

Unlock complete report
Multiple entrances & addresses

Included addresses

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

1210 Valencia St, San Francisco, CA 94110
1208 Valencia St, San Francisco, CA 94110
1204 Valencia St, San Francisco, CA 94110
1200 Valencia St, San Francisco, CA 94110
3409 23rd St, San Francisco, CA 94110
3421 23rd St, San Francisco, CA 94110
1202 Valencia St, San Francisco, CA 94110
1206 Valencia St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The property at 3409-3421 23rd Street in San Francisco's Inner Mission is a 21-unit, 2-story multi-family residential building constructed in 1923, currently owned by Samantha Lp. The building has undergone numerous renovations and maintenance activities over the past decade, with the most recent work including kitchen and bathroom remodels in Unit #2 and Unit #4 (completed in 2024 and 2023 respectively), and staircase repairs in response to a July 2023 complaint. A significant fire alarm system upgrade was completed in 2020 for $35,600, and there have been various unit renovations focusing on modernizing kitchens, bathrooms, and electrical systems across multiple units between 2013 and 2024.

The building has experienced recurring fire safety concerns, with several violations and complaints regarding alarm systems, sprinkler systems, and other safety features between 2019 and 2024. Most recently, violations were issued in October 2024 and November 2023 regarding alarm system maintenance and sleeping area requirements, though these were subsequently abated. In July 2023, multiple building violations were documented including water damage issues and concerns about lead-based paint, which were addressed through subsequent repairs. The building has also had periodic maintenance issues documented through 311 calls and complaints, including flooding incidents in late 2024, though many of these were determined to require no further action.

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 3409-3421 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

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
3rdpercentile

Out of 2380 buildings in this neighborhood, 2309 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
15%
No DBI
violation
85%
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.

Number of units

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

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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

12-Month risk forecast
High failure risk 85%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

3409-3421 23Rd 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.

The story over time

3409-3421 23Rd St event timeline

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

2026
311 Request Jul 25
Garbage and debris
human waste or urine
311 RequestJun 23
Garbage and debris

See all 34 events

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

Unlock complete timeline
Every record we have

Full data for 3409-3421 23Rd St apartments

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

Side by side

How 3409-3421 23Rd St compares to the neighborhood

This building against comparable properties in Inner Mission. Toggle filters to narrow the peer group.

Loading comparables…
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.

Pay once

Report Bundle

For the buildings you're deciding on right now

$10one time

3premium reports

$3.33 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 3 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them
Pay once

Apartment Hunter

For a wide search across many buildings

$39one time

30premium reports

$1.30 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 30 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them

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

Watch 3409-3421 23Rd St
Get alerted the moment a new violation or complaint is filed.