Free SF apartment background check

3500-3502 23Rd St

Noe Valley, SF 94110 3634002 3 units · 2 fl · 1906

This building has more problems than most buildings in this neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Noe Valley
At or below average
avg 1.2
1
FewerMore

This building has 1 novs (7y), at or below the Noe Valley average of 1.2.

Rent & eviction protection

Is 3500-3502 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 1906
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RM1
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
Units3
Floors2
Year built1906
Total area3,532 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3634002
Ownership

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

Owner name
Keck Matthew & Sofia
Mailing address
3502 23rd St San Francisco CA 94110
Last sale
082319

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.

86 San Jose Ave, San Francisco, CA 94110
3502 23rd St, San Francisco, CA 94110
3500 23rd St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The property at 3500-3502 23rd Street in Noe Valley is a 2-story multi-family residential building constructed in 1906, containing 3 units and currently owned by Matthew and Sofia Keck. The building has undergone several significant renovation projects over the years, including a major bathroom remodeling project in 2005 (though the permit eventually expired), kitchen renovations, and substantial electrical upgrades with multiple completed permits between 2005-2008 showing installation of new circuits, lights, and a 200-amp service. In January 2021, the building suffered exterior damage from a car incident that required repairs to wood and stucco, along with initial safety concerns about the main gas line and evidence of dry rot, though these issues were resolved by the following April.

The building has had recurring maintenance and code compliance issues, particularly in the 2000-2010 period, including violations related to unapproved dwelling unit construction, stair repairs, and various safety requirements such as the need for smoke detectors and fire-resistant materials. Multiple complaints have been filed regarding unpermitted construction work, with the most recent active complaint from 2020 alleging construction noises and materials being brought in and out of the building. More recently, there have been ongoing concerns about parking violations near the property, with multiple citations issued for sidewalk parking and driveway blocking between 2023-2024. The property was previously involved in an illegal short-term rental violation, which was resolved with penalties paid. Planning records show various proposals and inquiries, including attempts to verify zoning compliance and a canceled request for a larger development project that would have added additional units and an ADU to the site.

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 3500-3502 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
21th percentile

Out of 1879 buildings in this neighborhood, 1484 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
59%
No DBI
violation
41%
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.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

12-Month severity forecast
No violation 35.8%
Moderate concern 23.4%
Severe concern 40.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

3500-3502 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

Create account

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

3500-3502 23Rd St event timeline

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

2026
311 Request Jun 07
Blocking driveway cite only
Parking Enforcement
311 RequestApr 30
Parking on sidewalk

See all 13 events

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

Unlock complete timeline
Every record we have

Full data for 3500-3502 23Rd 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.

Search another address Get full report
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
Most Popular Current plan

Renter

For the weeks when the stakes are highest

$10/mo

Billed $120/year — save $24 vs monthly

  • Unlimited basic reports
  • 5 premium AI reports per month
  • Download PDF & Excel reports
  • Full public records (200 rows per dataset)
  • Full event timeline — every year of history
  • Landlord portfolio & ownership insights
Start Your Search

Less than $0.34/day. Cancel anytime.

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

Watch 3500-3502 23Rd St
Get alerted the moment a new violation or complaint is filed.