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320 Hamilton St

Portola, SF 94134 5988019 4 units · 2 fl · 1963

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 Portola
Above average
avg 1.8
3
FewerMore

This building has 3 novs (7y), above the Portola average of 1.8.

Rent & eviction protection

Is 320 Hamilton 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 1963
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH1
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
Units4
Floors2
Year built1963
Total area3,179 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot5988019
Ownership

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

Owner name
Tov Foan Yang
Mailing address
1128 Burrows St San Francisco CA 94134
Last sale
071599

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-story, four-unit multi-family residential building at 320 Hamilton Street in Portola, owned by Tov Foan Yang, was constructed in 1963 and has undergone several important maintenance and improvement projects over its lifetime. In 1997, the building underwent significant repairs including dry rot repairs, reroofing, and the replacement of three windows with double-glazed units, all of which were successfully completed. The building experienced a cluster of safety violations in early 2001, which were all promptly addressed and abated by March 14, 2001. These violations included stair repairs, fire escape maintenance, handrail repairs, fire extinguisher servicing, and modifications to roof deck safety features. A routine fire alarm system inspection in March 2017 resulted in corrected conditions. More recently, there is an active complaint filed in December 2024 regarding an unpermitted deck addition, which remains unresolved as of the latest available data.

The building's maintenance and violation history shows a pattern of addressing issues in a timely manner when they arise, particularly during the early 2000s when multiple safety concerns were identified and corrected. The most recent documented building-related issue pertains to a potentially unauthorized structure modification from 2024, though no resolution status is currently available. The surrounding area has experienced various municipal service calls over the years, primarily related to street cleaning, abandoned vehicles, and waste management, but these external issues do not directly impact the building's residential conditions or safety.

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

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Risk rating

How 320 Hamilton 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 255 buildings in this neighborhood, 181 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
60%
No DBI
violation
40%
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.

Neighborhood location

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

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 33.7%
Moderate concern 28.6%
Severe concern 37.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

320 Hamilton St event timeline

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

2024
Building Violation (NOV) Dec 05
Building violation
320 hamilton st.
Building Violation (NOV)Dec 05
Building violation

See all 4 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 320 Hamilton St apartments

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

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

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