Free SF apartment background check

3661-3671 16Th St

Duboce Triangle, SF 94114 3562028 24 units · 3 fl · 1905

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 Duboce Triangle
Above average
avg 2.3
13
FewerMore

This building has 13 novs (7y), above the Duboce Triangle average of 2.3.

Rent & eviction protection

Is 3661-3671 16Th 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 1905
2 or more units
24 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
Units24
Floors3
Year built1905
Total area13,040 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3562028
Ownership

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

Owner name
Williamson Separate Prpt Tr
Mailing address
Pg Investments 2601 22Nd Ave San Francisco CA 94116
Last sale
060499

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.

3665 16th St, San Francisco, CA 94114
3669 16th St, San Francisco, CA 94114
3667 16th St, San Francisco, CA 94114
3671 16th St, San Francisco, CA 94114
3661 16th St, San Francisco, CA 94114
3663 16th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The 24-unit, 3-story multi-family residential building at 3661-3671 16th Street in the Duboce Triangle neighborhood was built in 1905 and is currently owned by Williamson Separate Prpt Tr. The building has undergone several significant repairs and improvements over the past decade, including a completed soft-story retrofit in 2017 (Tier 2), replacement of utility ladders in 2019 to address safety code violations, and various stair repairs in 2019 totaling approximately $5,000. The property has faced recurring boiler permit issues, with the most recent violation noted in July 2020, though this was subsequently resolved. Multiple fire safety inspections have occurred in recent years, with the most recent violation issued in November 2023 regarding sleeping area requirements, and a previous fire extinguisher correction in 2023.

The building's maintenance history shows attention to various safety concerns, including lead paint remediation efforts between 2017-2019, and repairs to address both interior and exterior maintenance issues. Historical building violations from 2001, including window repair, stair maintenance, and fire escape ladder issues, were all resolved by February 2005. Recent 311 calls from 2019-2022 primarily involved sidewalk maintenance and general street cleaning issues, with a notable ongoing sidewalk defect reported in February 2022. The building's systems have been updated over time, including plumbing improvements such as steam boiler replacement in 2012, and electrical work for foundation support in 2011. While most historical violations have been resolved, the building's record shows periodic inspection-driven corrections and maintenance needs typical of older multi-family buildings in San Francisco.

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 3661-3671 16Th 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 287 buildings in this neighborhood, 284 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
13%
No DBI
violation
87%
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 severity forecast
No violation 14.2%
Moderate concern 48.5%
Severe concern 37.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

3661-3671 16Th 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

3661-3671 16Th St event timeline

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

2024
Fire Complaint Jun 13
Alarm Systems
No Merit

See all 14 events

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

Unlock complete timeline
Every record we have

Full data for 3661-3671 16Th 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 3661-3671 16Th St
Get alerted the moment a new violation or complaint is filed.