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486 40Th Ave

Outer Richmond, SF 94121 1471023B 7 units · 2 fl · 1977

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 Outer Richmond
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 486 40Th 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 1977
2 or more units
7 units
Property type
Multi-Family Residential
Zoning
RM1
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 built1977
Total area5,708 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1471023B
Ownership

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

Owner name
William Luu & Fei Ha Wong R
Mailing address
Luu William & Wong Fei Ha T 486 40Th Ave Apt 5 San Francisco CA 94121
Last sale
032205

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 7-unit, 2-story multi-family residential building at 486 40th Ave in the Outer Richmond, owned by William Luu & Fei Ha Wong R, was constructed in 1977. The property has undergone several significant maintenance and improvement projects over the past two decades, including a complete window replacement project in 2024 costing $30,000, reroofing work in 2014 ($15,000), and a previous roofing project in 2003. The building experienced substantial fire safety violations in March 2003, with multiple issues identified including problems with fire extinguishers, smoke detectors, fire escape equipment, and combustible storage, all of which were abated by May 20, 2003. More recently, in August 2024, there were complaints regarding construction-related issues, including debris and dust from window cladding work, though these complaints were marked as not active shortly after being filed.

The property has a history of addressing maintenance and safety issues, as evidenced by the timely resolution of the 2003 fire violations. Recent improvements, particularly the new windows installed in 2024, demonstrate ongoing maintenance efforts by the property owners. The building's location has experienced occasional external issues as documented in 311 calls, including parking concerns and reports of noise, but these are not directly related to the building's condition or management. Historical planning records confirm the original development of the 7-unit building with off-street parking spaces, and the recent window replacement project with stucco repairs has received proper permits and approvals.

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

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Risk rating

How 486 40Th 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
20th percentile

Out of 1040 buildings in this neighborhood, 832 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
69%
No DBI
violation
31%
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 60.1%
Moderate concern 22.6%
Severe concern 17.3%
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

486 40Th Ave event timeline

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

2024
DBI Complaint Aug 14
Uncontained debris from the window cladding. using back yard for cutting the cancer casuing cladding dust all over the yard casuing a hazard. can't open the opens for fresh air. large pieces of concrete falling in the front door. hazardous conditions due to construction.
Building Inspection Division
DBI ComplaintAug 14
Construction dust

See all 5 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 486 40Th 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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