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1031-1033 Guerrero St

Noe Valley, SF 94110 3634014 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 1031-1033 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 area2,270 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3634014
Ownership

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

Owner name
Laurence & Esperanza Mahan
Mailing address
Esperanza Mahan Trustee 50 West Portal Ave San Francisco CA 94127
Last sale
060595

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.

1031 Guerrero St, San Francisco, CA 94110
1033 Guerrero St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The property at 1031-1033 Guerrero Street in Noe Valley is a two-unit, two-story multi-family residential building dating back to 1900, currently owned by Laurence & Esperanza Mahan. The building has undergone several significant changes and faced various compliance issues over the years. Most notably, in 2007, there was a major intervention to remove an illegal kitchen and bathroom from the garage/basement area, with permits issued for the work across multiple trades including plumbing and electrical. In 2005-2006, the property experienced multiple housing code violations that required attention, including issues with electrical systems, interior surfaces (walls, ceilings, floors), windows, and plumbing fixtures, all of which were ultimately abated by November 2006.

More recent history shows fence and trellis work being undertaken in 2020, though this was somewhat contentious as evidenced by a May 2020 complaint about construction noise during remote teaching hours. There remains an active complaint from July 2014 regarding unpermitted construction in the garage area, which is particularly notable given the property's previous history with illegal units. While there were some permits filed in the early 1990s for seismic upgrades and garage work, these were ultimately cancelled. The most recent building-related activity appears to be limited to relatively minor exterior improvements, though the presence of unresolved complaints from 2014 raises some questions about full compliance with current building regulations.

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

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Risk rating

How 1031-1033 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
46th percentile

Out of 1879 buildings in this neighborhood, 1015 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
74%
No DBI
violation
26%
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 tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Neighborhood (ZIP code)

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

12-Month severity forecast
No violation 82.0%
Moderate concern 13.8%
Severe concern 4.2%
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

1031-1033 Guerrero St event timeline

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

2026
311 Request May 25
Blocking driveway cite only
Parking Enforcement
311 RequestMay 24
Blocking driveway cite only

See all 8 events

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

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Every record we have

Full data for 1031-1033 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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