Free SF apartment background check

4138 26Th St

Noe Valley, SF 94131 6554009 4 units · 3 fl · 1965

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 Noe Valley
Above average
avg 1.2
6
FewerMore

This building has 6 novs (7y), above the Noe Valley average of 1.2.

Rent & eviction protection

Is 4138 26Th 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 1965
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
Floors3
Year built1965
Total area3,925 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6554009
Ownership

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

Owner name
Mulligan Patrick Gerard Iv
Mailing address
3606 Scott St San Francisco CA 94123
Last sale
021420

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-story, four-unit multi-family residential building at 4138 26th Street in Noe Valley, owned by Patrick Gerard Iv Mulligan, was constructed in 1965 and has undergone several significant maintenance and improvement projects over the years. The building's maintenance history shows attention to essential systems, including a complete reroofing in 1997, water heater installation in 2019, and the recent addition of an EV charger in unit #2 in 2022, indicating ongoing infrastructure upgrades. In December 2019, the property underwent a routine housing inspection that revealed multiple safety compliance issues, including problems with emergency lighting, fire extinguishers, and smoke/carbon monoxide detector compliance, though all these violations were successfully abated by January 2020. A more recent complaint was lodged in June 2023 regarding unpermitted construction work with intense drilling, though this complaint was marked as not active.

The building's common areas have been subject to regular inspection, with records dating back to 2002 showing consistent oversight by Housing Inspection Services. There is also a notable pattern of parking-related issues near the building, with multiple reports of vehicles blocking driveways or double parking in the vicinity between July and November 2023, though these are not directly related to the building's condition or safety systems. The property's maintenance record suggests regular upkeep of critical systems, with all identified violations being promptly addressed, though the 2019 inspection highlighted a period when multiple safety systems required attention. The inclusion of modern features such as the EV charger demonstrates the building's adaptation to current residential demands, though the 2023 complaint about unpermitted work raises some concern about adherence to proper permitting procedures.

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

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Risk rating

How 4138 26Th 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
15th percentile

Out of 1879 buildings in this neighborhood, 1597 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
53%
No DBI
violation
47%
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.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

12-Month severity forecast
No violation 41.4%
Moderate concern 27.8%
Severe concern 30.9%
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

4138 26Th St event timeline

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

2026
Electrical Permit Apr 02
Installation of level 2 evse w/ load management device.
Issued

See all 11 events

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

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Every record we have

Full data for 4138 26Th 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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