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169-171 Castro St

Duboce Triangle, SF 94114 3540036 2 units · 2 fl · 1903

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Duboce Triangle — not a forecast
At or below average
avg 2.3
0
FewerMore

This building has 0 novs (7y), at or below the Duboce Triangle average of 2.3.

Rent & eviction protection

Is 169-171 Castro 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 1903
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1903
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units2
Floors2
Year built1903
Total area2,924 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3540036
Ownership

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

Mailing address
Timothy M & Lorraine L Sher 171 Castro St San Francisco CA 94114
Last sale
January 20, 1989

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

169 Castro St, San Francisco, CA 94114
171 Castro St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The two-unit multi-family residential building at 169-171 Castro Street in the Duboce Triangle neighborhood is a two-story flats and duplex structure built in 1903, currently owned by the Sheridon Family Living Trust. The most significant recent event in the building's history was a structure fire on July 9, 2011, which resulted in damage to the interior bathroom and kitchen, requiring extensive repairs to the dining room, kitchen, and bathroom areas, including sheetrock replacement, fixture updates, and electrical rewiring. These repairs, completed in 2011 at a cost of $50,000, also included restoration of a rear deck, roofing, and siding work. Other notable improvements include plumbing upgrades in 2011 (new bathroom and kitchen fixtures), sewer repair in 2009, and electrical rewiring related to the fire damage. The building has a history of various maintenance and improvement work, including termite treatment (1995), fireplace flue relining (1992), and several modifications to the existing structures between 1986 and 1997.

The property has experienced typical urban challenges, as evidenced by multiple 311 calls in recent years, including reports of graffiti (most recently in September 2023), sign repairs, and a damaged tree reported in February 2024. Many of these issues have been promptly resolved by city agencies. Historical permit records show ongoing maintenance and code compliance efforts, with work completed on various building systems over the years, including electrical, plumbing, and structural components. The fire incident in 2011 required significant recovery efforts, but subsequent improvements appear to have brought the building up to current codes and standards.

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

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Risk rating

How 169-171 Castro 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
73rdpercentile

Out of 287 buildings in this neighborhood, 77 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

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.

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 risk forecast
Low failure risk 17%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

169-171 Castro St apartment reviews

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The story over time

169-171 Castro St event timeline

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

2026
311 Request Jul 19
Garbage and debris
furniture
311 RequestJun 25
Sidewalk defect

See all 5 events

Full history back to 2026 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 169-171 Castro St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

Side by side

How 169-171 Castro St compares to the neighborhood

This building against comparable properties in Duboce Triangle. Toggle filters to narrow the peer group.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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