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439-441 43Rd Ave

Outer Richmond, SF 94121 1475032 4 units · 3 fl · 1986

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 439-441 43Rd 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 1986
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units4
Floors3
Year built1986
Total area6,730 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1475032
Ownership

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

Owner name
Yang Adeel Jenyeu & Yang La
Mailing address
439 43rd Ave San Francisco CA 94121
Last sale
052220

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.

441 43rd Ave, San Francisco, CA 94121
439 43rd Ave, San Francisco, CA 94121
441 A 43rd Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The three-story, four-unit apartment building at 439-441 43rd Avenue in San Francisco's Outer Richmond neighborhood, constructed in 1986, has undergone several significant renovations and improvements over the past decade. Most notably, recent work includes the conversion of a ground floor storage space into an Accessory Dwelling Unit (ADU) in 2020, followed by comprehensive fire safety improvements including the installation of a new fire sprinkler system and related modifications in 2022. The building has seen consistent maintenance and upgrades, with major renovations to kitchens, bathrooms, and windows completed across multiple units between 2017 and 2019, including a full remodel of both units' kitchens and bathrooms in 2018, and the addition of laundry facilities.

The property has maintained a strong focus on safety, implementing multiple fire safety improvements including the installation of a building-wide fire sprinkler system in 2017 and subsequent upgrades in 2022. While there have been several parking-related incidents recorded through 311 calls, these primarily involve temporary issues with vehicles blocking driveways between 2022 and 2025. The building experienced a sewage backup incident in September 2022, which was promptly resolved. Fire safety records indicate seven instances of smoke detector or alarm system activation, though all were classified as unintentional with no resulting injuries or damage. Recent plumbing and electrical work was completed in 2024, suggesting ongoing maintenance and systems updates, while the property has successfully transitioned to individual utility metering for all four units, with separate backflow prevention systems installed in 2018.

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

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Risk rating

How 439-441 43Rd 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
26th percentile

Out of 1040 buildings in this neighborhood, 770 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
76%
No DBI
violation
24%
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 size

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

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.

12-Month severity forecast
No violation 72.9%
Moderate concern 19.9%
Severe concern 7.2%
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

439-441 43Rd Ave event timeline

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

2025
311 Request Jan 04
Blocking driveway cite only
Parking Enforcement

See all 12 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 439-441 43Rd Ave apartments

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

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