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647 33Rd Ave

Outer Richmond, SF 94121 1576005O 2 units · 2 fl · 1925

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Outer Richmond — not a forecast
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Outer Richmond average of 0.7.

Rent & eviction protection

Is 647 33Rd Ave 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 1925
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
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 1925
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
Units2
Floors2
Year built1925
Total area3,020 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1576005O
Ownership

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

Mailing address
647 33rd Ave San Francisco CA 94121
Last sale
March 02, 1995

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 647 33rd Avenue in San Francisco's Outer Richmond district, owned by Walter and Monica Kwok, has been standing since 1925 as a two-story flats and duplex structure. The property has undergone several significant maintenance works over the years, with the most recent major repair occurring in October 2021, involving work on the backyard stairs, rear siding, and roofing with a cost of $80,000. Historical records show earlier roofing work completed in 1992, and a final inspection permit from 1976.

The building experienced a notable series of sewer-related issues between 2018 and 2020, with eight documented sewage backup incidents primarily involving 4-inch sewer vents. These problems seemed to be recurring, with multiple incidents recorded between January 2019 and January 2020, though all were ultimately resolved through various maintenance actions including flushing and trap relief. The most recent incidents outside the sewer domain include two parking-related complaints in 2023 and 2020, both of which were promptly addressed by parking enforcement. A 2018 report of an abandoned vehicle was resolved when the vehicle was no longer present upon inspection. Despite the historical sewer issues, all documented cases were addressed and resolved through appropriate municipal and private interventions.

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

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Risk rating

How 647 33Rd Ave'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
97thpercentile

Out of 1040 buildings in this neighborhood, 31 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
94%
No DBI
violation
6%
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 permits, owner's portfolio

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

Permit rate, owner's portfolio

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

Building age

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

12-Month risk forecast
Low failure risk 6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

647 33Rd Ave apartment reviews

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On the map

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8 found
The story over time

647 33Rd Ave event timeline

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

2021
Building Permit Oct 25
Repair & replace of backyard (e) stair less than 50%, replair rear siding less than 50% & repair roofing with asphalt rolls (unvisitable from street) less than 50%. not a complete re-roof.
$80,000 · Complete

See all 1 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 647 33Rd Ave apartments

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

Side by side

How 647 33Rd Ave compares to the neighborhood

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