Free SF apartment background check

3654-3656 20Th St

Mission Dolores, SF 94110 3597021 6 units · 3 fl · 1907

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 Mission Dolores
At or below average
avg 2.9
1
FewerMore

This building has 1 novs (7y), at or below the Mission Dolores average of 2.9.

Rent & eviction protection

Is 3654-3656 20Th 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 1907
2 or more units
6 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.

Building characteristics
Units6
Floors3
Year built1907
Total area8,550 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3597021
Ownership

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

Owner name
Owyang Shirley Trust
Mailing address
700 Guerrero St San Francisco CA 94110
Last sale
031798

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.

3656 20th St, San Francisco, CA 94110
3656 A 20th St, San Francisco, CA 94110
3654 B 20th St, San Francisco, CA 94110
3654 20th St, San Francisco, CA 94110
3654 A 20th St, San Francisco, CA 94110
3656 B 20th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The property at 3654-3656 20th Street is a 6-unit, 3-story multi-family residential building constructed in 1907, currently owned by the Owyang Shirley Trust. The building has undergone significant safety improvements in recent years, including a mandatory soft-story retrofit completed in 2023 at a cost of $60,000. This work was carried out to comply with San Francisco Building Code requirements and involved the relocation of plywood shearwalls and concrete grade beams. Prior to this, the building had several maintenance and improvement projects including kitchen remodeling (2019) with associated plumbing and electrical work, window replacements (2009), and repair of dry rot in rear stairs (2009).

The building's history includes several building violations and complaints, though all have been resolved. Notable past issues included staircase repairs, removal of egress obstructions, and water damage repairs between 2002 and 2009. A recent complaint regarding failure to comply with the Tier III soft-story seismic retrofit program was filed in 2020 and resolved in 2023, indicating that all required seismic safety improvements have now been completed. The property has had regular maintenance and periodic inspections, with the most recent building permit work relating to final inspections of completed soft-story retrofit work. Recent 311 calls from 2020-2024 have primarily concerned street cleaning and sidewalk maintenance, with one open issue regarding tree root damage to the sidewalk from 2021. The building is now in full compliance with current safety standards, having completed all mandatory seismic improvements and obtained the necessary permits and inspections.

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 3654-3656 20Th 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
29th percentile

Out of 799 buildings in this neighborhood, 567 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
53%
No DBI
violation
47%
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.

Building size

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

Number of units

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

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 33.7%
Moderate concern 43.2%
Severe concern 23.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

3654-3656 20Th 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

3654-3656 20Th St event timeline

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

2023
Building Permit Mar 30
To obtain final inspection for work approved under pa# 201511132576. all work is complete.
$1 · Complete
Building PermitJan 27
Revision to pa# 201511132576 (soft story retrofit), supercede design & engineer of record. soft story retrofit to comply w/ 2022 sfebc chap.5e per 2022 cebc appendix a-4 standards. relocate plywood shearwalls & concrete grade beams & capped ftg.

See all 5 events

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

Unlock complete timeline
Every record we have

Full data for 3654-3656 20Th 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 3654-3656 20Th St
Get alerted the moment a new violation or complaint is filed.