Free SF apartment background check

40 Gaven St

Portola, SF 94134 5856028 7 units · 2 fl · 1975

This building has significantly more problems than most nearby buildings. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Portola
Above average
avg 1.8
14
FewerMore

This building has 14 novs (7y), above the Portola average of 1.8.

Rent & eviction protection

Is 40 Gaven 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 1975
2 or more units
7 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
Units7
Floors2
Year built1975
Total area6,960 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot5856028
Ownership

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

Owner name
Phong Van & Kieu Loan Duong
Mailing address
Tien Phong Van & Kieu Loan 733 Dwight St San Francisco CA 94134
Last sale
050912

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 40 Gaven Street in Portola is a 2-story, 7-unit multi-family residential building constructed in 1975, currently owned by Phong Van & Kieu Loan Duong. The building has undergone significant recent changes, with major work currently in progress as of March 2024 to convert five covered parking spaces into new dwelling units (Units 9-13), following the legal authorization under Ordinance No. 162-16. This conversion includes comprehensive electrical and plumbing work, with new kitchens and bathrooms being added. The building has completed several important safety improvements, including a mandatory soft-story retrofit (completed in 2016) and the legalization of Unit #8 (completed in 2022) under Ordinance 43-14.

Recent concerns have been raised regarding the building's condition and maintenance, with active complaints as of December 2024 about roof leaks potentially causing mold issues, and previous complaints about unauthorized construction and utility shutoffs. The building has a history of violations and complaints that required attention, particularly relating to fire safety systems, blocked exits, and various maintenance issues. These included multiple citations in 2000-2001 for fire safety violations (such as fire extinguisher maintenance and floor covering repairs), and various building code compliance issues over the years. While many of these historical violations have been addressed and closed, the most recent complaints indicate ongoing maintenance and safety concerns that may affect resident quality of life.

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

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Risk rating

How 40 Gaven 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
12th percentile

Out of 255 buildings in this neighborhood, 224 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
38%
No DBI
violation
62%
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 size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

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 38.8%
Moderate concern 29.9%
Severe concern 31.3%
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

40 Gaven St event timeline

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

2026
Plumbing Permit Jun 10
To renew permit pp20240320898 for final inspections. convert 5 parking spaces into 5 adus with new bathrooms and kitchens.
Issued
Plumbing PermitJun 10
To renew permit pm20240320899 for final inspection: convert 5 parking spaces into 5 adus with kitchens and bathrooms.

See all 28 events

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

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Every record we have

Full data for 40 Gaven 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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