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171 11Th Ave

Lake Street, SF 94118 1371015 6 units · 2 fl · 1962

This building has far more open problems than almost any other in the neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Lake Street
At or below average
avg 0.6
0
FewerMore

This building has 0 novs (7y), at or below the Lake Street average of 0.6.

Rent & eviction protection

Is 171 11Th 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 1962
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
RH2
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
Floors2
Year built1962
Total area4,332 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1371015
Ownership

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

Owner name
Ho Thomas A Jr
Mailing address
1565a Pacific Ave San Francisco CA 94109
Last sale
041112

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-story, six-unit multi-family residential building at 171 11th Ave, owned by Thomas A Ho Jr, was constructed in 1962 in the Lake-Presidio neighborhood. The building's maintenance history includes several significant roofing and siding projects, with reroofing work performed in 1990 and 2003, and vinyl siding installation on the rear and south walls in 2000. Of particular concern is an active soft-story seismic program complaint filed in August 2019 regarding the building's unregistered status, which remains unresolved as of the latest records. The property has undergone multiple housing inspections over the years, with routine inspections conducted in 1996, 2000, 2007, and 2011 revealing various safety concerns. These included issues with the central fire alarm system, gas utility shutoff tools, and fire safety certifications, all of which were addressed by February 2011.

The building's documented history shows attention to basic maintenance requirements, including termite repairs in 1993 and various inspections. While the residential unit's maintenance record shows regular upkeep through roofing and siding improvements, the pending soft-story registration remains a notable concern. Recent 311 calls near the property (from 2019 to 2023) primarily relate to street and sidewalk issues outside the building's immediate scope, including parking enforcement, street cleaning, and sign repairs. The history of building permits shows proper documentation of major improvements, though there was one instance in 2003 where reroofing work was performed without a permit, which was subsequently resolved.

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

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Risk rating

How 171 11Th 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
10th percentile

Out of 660 buildings in this neighborhood, 594 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
53%
No DBI
violation
47%
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.

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.

12-Month severity forecast
No violation 44.5%
Moderate concern 45.1%
Severe concern 10.4%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

171 11Th Ave apartment reviews

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The story over time

171 11Th Ave event timeline

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

2025
Electrical Permit Mar 17
Upgrade existing old service to 400a
Issued

See all 3 events

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

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Every record we have

Full data for 171 11Th 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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