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3674 16Th St

Duboce Triangle, SF 94114 3561028 5 units · 3 fl · 1890

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.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

Rent & eviction protection

Is 3674 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 1890
2 or more units
5 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 1890
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
Units5
Floors3
Year built1890
Total area4,500 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3561028
Ownership

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

Owner name
Mailing address
485 35th Ave San Francisco CA 94121
Last sale
July 12, 2017

Landlord portfolio

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

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Augrented Insights
Initial analysis

Located in the Duboce Triangle neighborhood, 3674 16th Street is a three-story, 5-unit multi-family residential building constructed in 1890 and currently owned by Zhang Tong Tong. The property has undergone several significant improvements over the past decade, including completed soft-story seismic retrofitting in 2017 (tier 3), comprehensive unit renovations in 2017 (including Unit #1 and Unit #4), and roofing work in 2018 costing $9,500. Major infrastructure updates include a plumbing system upgrade with sewer line replacement in 2017, electrical system improvements, and multiple kitchen and bathroom remodels. However, recent concerns have emerged regarding unpermitted work at the property, particularly a potentially unauthorized bathroom addition (reported August 2022) and sewer lateral replacement work (September 2023) that reportedly obstructed public access and violated ADA requirements.

The building has a history of compliance issues dating back to 2001, when multiple violations were recorded related to stairs, smoke detectors, and combustible storage, though these were all abated by 2003. There were also significant concerns in 2018 regarding lead paint removal practices, and complaints about possible unpermitted dwelling unit conversions and short-term rental activity were filed in 2018. The property has experienced some maintenance challenges as evidenced by multiple 311 calls, particularly relating to sewer issues in 2021 and exterior maintenance concerns. While most recent building work has been permitted and completed, the pattern of recent complaints suggests ongoing concerns about compliance with building codes and regulations. The building's historical records show a pattern of permits for various improvements and repairs, indicating regular maintenance and upgrading of the property over time.

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

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Risk rating

How 3674 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
16thpercentile

Out of 287 buildings in this neighborhood, 241 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
47%
No DBI
violation
53%
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.

Number of units

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

Permit rate, owner's portfolio

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

12-Month risk forecast
Moderate failure risk 53%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

3674 16Th St apartment reviews

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On the map

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This building and nearby alternatives, color-coded by risk level. Click any marker to explore.

The story over time

3674 16Th St event timeline

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

2025
311 Request Jun 04
Sidewalk defect
lifted sidewalk tree roots
311 RequestMay 13
Blocking driveway cite tow

See all 8 events

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

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Every record we have

Full data for 3674 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 3674 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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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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