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1339-1341 33Rd Ave

Central Sunset, SF 94122 1788007 4 units · 2 fl · 1947

This building has significantly more problems than most nearby buildings. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Central Sunset
At or below average
avg 0.7
0
FewerMore

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

Rent & eviction protection

Is 1339-1341 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 1947
2 or more units
4 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.

Building characteristics
Units4
Floors2
Year built1947
Total area2,842 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1788007
Ownership

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

Owner name
Lawrence Shu-Nan Mao 2004 R
Mailing address
Mao Lawrence Shu-nan Truste 370 Allen Dr San Bruno CA 94066
Last sale
000000

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

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

1339 33rd Ave, San Francisco, CA 94122
1341 33rd Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

The property at 1339-1341 33rd Avenue in the Central Sunset neighborhood is a two-story, four-unit multifamily residential building constructed in 1947 and currently owned by Lawrence Shu-nan Mao. The building has undergone several significant maintenance and improvement projects over the years, most recently including a reroofing project in 2022 costing $10,000. Infrastructure upgrades have been made to improve building systems, including a sewer line replacement in 2007, installation of a 200-amp meter panel in 2013, and addressing dry rot issues in 2009 that affected the exterior walls at the building's landings. The building has a notable history of violations recorded in 2002 related to safety and security requirements, including the need for smoke detectors, security viewers, fire extinguishers, and maintenance of the garage area; however, all these violations were officially abated by July 2022. Routine inspections by Housing Inspection Services have occurred in 1999, 2002, and most recently in 2022, with no active violations on record. Recent service calls from 2015 through 2023 have primarily concerned external issues such as street cleaning, tree maintenance, parking enforcement, and graffiti, with no calls directly related to building safety or maintenance concerns.

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

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Risk rating

How 1339-1341 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

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
16th percentile

Out of 814 buildings in this neighborhood, 684 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
71%
No DBI
violation
29%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Neighborhood location

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

12-Month severity forecast
No violation 51.7%
Moderate concern 24.9%
Severe concern 23.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

1339-1341 33Rd Ave event timeline

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

2022
DBI Complaint Jun 22
Routine inspection
Housing Inspection Services
Building PermitJun 08
Reroofing

See all 2 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1339-1341 33Rd Ave 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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