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1017 Guerrero St

Noe Valley, SF 94110 3633016 2 units · 2 fl · 1887

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 1017 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 1887
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 built1887
Total area1,840 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3633016
Ownership

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

Owner name
Wieferman James S
Mailing address
1017 Guerrero St San Francisco CA 94110
Last sale
012704

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 1017 Guerrero Street in Noe Valley is a two-story flats and duplex structure built in 1887, currently owned by James S. Wieferman. The property has undergone several significant renovations and improvements over the past few decades, with the most recent major work including a furnace replacement and new condensate drain line installation in 2020. Notable historical improvements include a garage conversion with driveway work in 2006, comprehensive bathroom and kitchen renovations for both units in 1999-2000, window size modifications, skylight addition, and foundation work completed in 1996. The building experienced a violation period in 2009-2010 related to an expired permit for garage conversion work, which transitioned through several notices before a final director hearing, though this appears to have been resolved with subsequent inspection approval in 2010.

Recent activity around the property primarily concerns street and sidewalk maintenance, with multiple 311 calls in 2023-2024 reporting issues such as graffiti on mailboxes and debris on public thoroughfares. These external maintenance matters have mostly been resolved through appropriate channels, including transfers to USPS and closure by city services. The building's maintenance history shows regular upkeep and improvements, with no recent building violations or major structural concerns reported since the 2009-2010 permit issue.

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

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Risk rating

How 1017 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
95th percentile

Out of 1879 buildings in this neighborhood, 94 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
93%
No DBI
violation
7%
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 91.9%
Moderate concern 6.4%
Severe concern 1.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

1017 Guerrero St event timeline

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

2026
311 Request May 11
Homelessness and supportive housing
housing homeless request for service

See all 5 events

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

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Every record we have

Full data for 1017 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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