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171-175 Duboce Ave

Mission Dolores, SF 94103 3533060 6 units · 3 fl · 1907

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 Mission Dolores
At or below average
avg 2.9
0
FewerMore

This building has 0 novs (7y), at or below the Mission Dolores average of 2.9.

Rent & eviction protection

Is 171-175 Duboce Ave 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 1907
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
RM2
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
Units6
Floors3
Year built1907
Total area6,897 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3533060
Ownership

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

Owner name
Noble-Arnold Family Trust T
Mailing address
Jeffrey G Arnold 56 Tappan Ln Orinda CA 94563
Last sale
000000

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.

171 Duboce Ave, San Francisco, CA 94103
173 Duboce Ave, San Francisco, CA 94103
175 Duboce Ave, San Francisco, CA 94103
Augrented Insights
Initial analysis

The three-story multi-family residential building at 171-175 Duboce Avenue, constructed in 1907 and containing 6 units, completed its mandatory soft-story retrofit in 2017 (Tier 3) at a cost of $60,000, significantly improving its seismic safety. The building has undergone several substantial renovations, including a comprehensive kitchen and bathroom remodel in Unit 173A in 2015 ($25,000) that included modern electrical upgrades, plumbing improvements, and new appliances. Between 2011 and 2018, the property addressed various maintenance issues, including exterior stair repairs, water damage remediation, and dry rot repairs to structural elements in 2013. Building inspections and violations from 2003 and 2013 noted several concerns including mold, stair repairs, weatherproofing issues, and lead paint safety, though all these violations were officially abated by February 2004.

Recent maintenance and permit activity at the property has been limited primarily to street space permits between 2015-2019. The building's systems received significant upgrades during the 2013-2015 period, including a 200-amp electrical service upgrade to the basement with individual meters for each unit. External areas around the building have experienced typical urban issues as evidenced by 311 calls, including parking violations, hazardous materials concerns, and general cleaning needs, though these are mostly related to street-level maintenance rather than building-specific problems. The most recent building-related activity was a routine safety inspection in 2009, with no significant violations recorded since the comprehensive remediation efforts of 2013-2014.

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

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Risk rating

How 171-175 Duboce Ave'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
41th percentile

Out of 799 buildings in this neighborhood, 471 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
62%
No DBI
violation
38%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

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 38.5%
Moderate concern 27.3%
Severe concern 34.2%
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

171-175 Duboce Ave event timeline

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

2026
311 Request Apr 28
Pole
pole knockdown PUC - Streetlights

See all 2 events

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

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Every record we have

Full data for 171-175 Duboce Ave 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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