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239 Mullen Ave

Bernal Heights, SF 94110 5529025 2 units · 1 fl · 1900

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 Bernal Heights
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Bernal Heights average of 1.2.

Rent & eviction protection

Is 239 Mullen 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 1900
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.

Building characteristics
Units2
Floors1
Year built1900
Total area1,342 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot5529025
Ownership

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

Owner name
Najera Joseph A
Mailing address
239 Mullen Ave San Francisco CA 94110
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 239 Mullen Ave in Bernal Heights, owned by Joseph A. Najera, is a one-story flats and duplex structure built in 1900 that has undergone several significant maintenance and safety improvements over the years. The property has shown recent maintenance attention with a complete reroofing project in March 2023 costing $15,000, and earlier repairs to a rear landing and stairs in March 2020 addressing safety concerns. Notably, the building faced serious safety issues in 2002 when violations were recorded regarding the rear wooden deck's condition, citing dry rot, pest damage, and settlement concerns, particularly relating to its support for a hot tub. These violations, which were abated in 2007, led to subsequent repair work including a 2003 deck repair project and multiple complaints through 2020 regarding its property line positioning and construction methods.

The property has made environmental improvements with the installation of solar panels in 2011 (1.17 kW system) and 2018 (1.45 kW system). Recent maintenance history shows ongoing attention to structural integrity, particularly regarding the deck/landing areas which have been the focus of multiple repair projects and inspections. The building's recent history (2022-2024) has primarily consisted of external issues not directly related to the building's condition, such as parking violations and street maintenance concerns, though there were also some complaints about street pavement defects and general cleaning needs in 2022.

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

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Risk rating

How 239 Mullen 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
11th percentile

Out of 1276 buildings in this neighborhood, 1136 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
49%
No DBI
violation
51%
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.

DBI complaint rate, owner's portfolio

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

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 34.7%
Moderate concern 28.7%
Severe concern 36.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

239 Mullen Ave apartment reviews

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The story over time

239 Mullen Ave event timeline

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

2025
311 Request Nov 03
Sewage back-up discharge
from catch basin

See all 9 events

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

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Every record we have

Full data for 239 Mullen 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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