Free SF apartment background check

1241 Guerrero St

Noe Valley, SF 94110 6513018 2 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 Noe Valley
At or below average
avg 1.2
0
FewerMore

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

Rent & eviction protection

Is 1241 Guerrero 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
2 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
Units2
Floors2
Year built1900
Total area2,261 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6513018
Ownership

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

Owner name
Stegner Sarah
Mailing address
4827 48th Ave Sw Seattle WA 98116
Last sale
051705

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 1241 Guerrero Street in Noe Valley is a two-story, two-unit multi-family residential building constructed in 1900 and currently owned by Sarah Stegner. The building has undergone several significant improvements over the past few decades, with particular attention to safety and efficiency. In 2019, three water heaters were replaced, addressing a cluster of violations from 2008 related to water heater ventilation and seismic bracing that were successfully resolved by December 2008. Other recent updates include the installation of vinyl windows in 2010 and 2005, and the addition of electrical infrastructure in 2016.

The building's maintenance history shows regular upkeep of critical systems, including roofing work documented in 1997 and 1993, and structural repairs to the perimeter base wall and rear stairs completed in 1986. A routine housing inspection in 2017 did not generate any active violations. Recent maintenance issues in the surrounding area have been documented through 311 calls, including a lifted sidewalk (open case since 2022) and various street cleaning matters. While there have been multiple utility-related incidents reported between 2021-2024, including flooding and sewer issues, these primarily affected the public infrastructure rather than the building itself. The property's most significant recent work was the comprehensive water heater replacement in 2019, which included three units, demonstrating attention to modernizing building systems.

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

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Risk rating

How 1241 Guerrero 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
64th percentile

Out of 1879 buildings in this neighborhood, 676 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
83%
No DBI
violation
17%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 80.8%
Moderate concern 11.9%
Severe concern 7.3%
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

1241 Guerrero St event timeline

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

2026
311 Request Mar 22
Blocking driveway cite only
Parking Enforcement

See all 4 events

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

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Every record we have

Full data for 1241 Guerrero 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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