Free SF apartment background check

3364 26Th St

Inner Mission, SF 94110 6528018 4 units · 2 fl · 1900

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Inner Mission
At or below average
avg 2.6
0
FewerMore

This building has 0 novs (7y), at or below the Inner Mission average of 2.6.

Rent & eviction protection

Is 3364 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 1900
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH3
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
Floors2
Year built1900
Total area2,612 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6528018
Ownership

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

Owner name
Mondragon Leopoldo & Sylvia
Mailing address
1374 Hampshire St San Francisco CA 94110
Last sale
030602

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 3364 26th Street in San Francisco's Inner Mission is a two-story, multi-family residential building with commercial space, containing 4 units and built in 1900. Currently owned by Leopoldo & Sylvia Mondragon, the building has undergone significant recent activity, particularly regarding restaurant renovations, with multiple permits issued in 2023-2024 for remodeling work including new sinks, refrigeration, and electrical improvements totaling over $30,000. However, there are serious concerns about the renovation process, with an active building complaint filed in November 2024 alleging unauthorized construction work, improper waste management, and pest issues.

The building's systems have received attention over the years, including a completed 2010 gas houseline extension project serving multiple addresses, though several older permits from the 1990s related to kitchen fire safety appear to have expired. The property has experienced recurring maintenance and sanitation challenges, with multiple 311 calls between 2022-2024 reporting issues such as garbage and debris, graffiti, and instances of human or animal waste on nearby sidewalks. A notably concerning active building complaint from November 2024 alleges unauthorized construction activity, including changes to gas, electric, flooring, and plumbing systems, along with issues related to debris, noise, and pest management. While the recent permits suggest legitimate renovation work, the timing and nature of the building complaint raises significant concerns about proper permitting and construction practices, though these claims should be independently verified through appropriate channels.

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

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Risk rating

How 3364 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
38th percentile

Out of 2380 buildings in this neighborhood, 1476 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
58%
No DBI
violation
42%
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.

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

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 44.4%
Moderate concern 32.1%
Severe concern 23.4%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

3364 26Th St event timeline

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

2026
311 Request May 06
Parking meter
Damage Property
Plumbing PermitFeb 25
Amendment to permit# pp20240606229: installation of 1-3 comp sink, 1 prep sink, 2 hand wash stations, 2 mop sink, 1 floor sink, and 1 drain (floor).

See all 7 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3364 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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