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3639-3645 16Th St

Duboce Triangle, SF 94114 3562031 4 units · 2 fl · 1917

A handful of records on file over the last seven years, and our model sees a moderate chance of more in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Duboce Triangle — not a forecast
At or below average
avg 2.3
0
FewerMore

This building has 0 novs (7y), at or below the Duboce Triangle average of 2.3.

Rent & eviction protection

Is 3639-3645 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 1917
2 or more units
4 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.

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 1917
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
Units4
Floors2
Year built1917
Total area4,890 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3562031
Ownership

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

Owner name
Mailing address
3643 16th St San Francisco CA 94114
Last sale
December 05, 2007

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

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

3639 16th St, San Francisco, CA 94114
3643 16th St, San Francisco, CA 94114
3645 16th St, San Francisco, CA 94114
3641 16th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The 4-unit multi-family residential building at 3639-3645 16th Street in the Duboce Triangle neighborhood, constructed in 1917, has undergone several significant maintenance and improvement projects over the past decade. Most recently, in June 2023, exterior stucco repairs and painting were initiated at a cost of $50,000, addressing peeling paint issues noted in a 2017 complaint. The building has seen substantial mechanical system upgrades, including the installation of new heating systems in 2018-2019, with multiple heat pump and furnace installations replacing older equipment. A notable incident occurred in 2013 when unauthorized modifications were made to convert a breezeway storage room into a laundry facility, which led to multiple violations and required subsequent permitting and correction work between 2013-2018.

The property has undergone routine inspections and repairs to maintain safety and compliance with building codes, including electrical system upgrades, plumbing improvements, and fire safety corrections. Several violations from 2006 were resolved by November 2006, including issues related to ceiling repairs and gas meter requirements. The building's infrastructure has received attention through various permits for plumbing and electrical upgrades, including water heater replacements and sewer trap work. While there were multiple complaints and violations recorded over the years, the property management has generally addressed these issues through proper channels, with most recent work focused on exterior maintenance and system upgrades. The building's ownership structure was converted to a 4-unit condo configuration, with proper permits obtained for various improvements, indicating ongoing investment in maintaining the property's condition and compliance with local building codes.

AI-generated · may contain errors · check the source data tables below

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Risk rating

How 3639-3645 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

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
55thpercentile

Out of 287 buildings in this neighborhood, 129 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
70%
No DBI
violation
30%
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.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

12-Month risk forecast
Moderate failure risk 30%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

3639-3645 16Th St apartment reviews

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On the map

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Buildings nearby
8 found
The story over time

3639-3645 16Th St event timeline

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

2026
Building Permit Jul 21
Revision to (e) pa#202509306398, revise the design to match the existing conditions. revise framing size and nailing spacing.
$1 · Filed
Planning RecordJul 21
Revision to existing permit 202509306398. Revise the non-street visible garage design to match the existing conditions. Revise framing size and nailing spacing.

See all 7 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3639-3645 16Th St apartments

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

Side by side

How 3639-3645 16Th St compares to the neighborhood

This building against comparable properties in Duboce Triangle. Toggle filters to narrow the peer group.

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