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1635 Clay St

Nob Hill, SF 94109 0621020 12 units · 3 fl · 1913

This building has more problems than most buildings in this neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Nob Hill
Above average
avg 2.4
6
FewerMore

This building has 6 novs (7y), above the Nob Hill average of 2.4.

Rent & eviction protection

Is 1635 Clay 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 1913
2 or more units
12 units
Property type
Multi-Family Residential
Zoning
RM3
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
Units12
Floors3
Year built1913
Total area10,215 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0621020
Ownership

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

Owner name
Landa Siu Low Revoc Tr
Mailing address
Low Landa Siu Trustee 58 West Portal Ave #104 San Francisco CA 94127
Last sale
062201

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 12-unit, 3-story apartment building at 1635 Clay Street, built in 1913 and currently owned by the Landa Siu Low Revocable Trust, has undergone several significant improvements and faced various challenges over the years. Most notably, the building completed mandatory seismic safety improvements with a soft-story retrofit in 2019 (initially permitted in 2017 with a cost of $110,000), demonstrating compliance with San Francisco's seismic safety requirements. Recent maintenance includes a $28,500 reroofing project completed in 2021 and a 2022 electrical upgrade involving kitchen rewiring and a new sub-panel. The building has experienced recurring fire safety issues, with multiple violations and complaints between 2015 and 2023 related to alarm systems and extinguishers, though most have been promptly corrected or abated.

The property has faced various maintenance and safety concerns over its history, including a significant cluster of violations in 2000-2001 related to building sanitation, fire safety, and interior surfaces, all of which were resolved by November 2000. A recent active complaint from May 2024 regarding common areas indicates ongoing maintenance attention is required. The building has also experienced some resident service interruptions, such as deteriorating indoor steps (2022) and construction-related noise complaints (2016). Recent 311 calls show recurring issues with garbage and debris removal outside the building, particularly in October-November 2024, and multiple reports of driveway blocking, suggesting parking management challenges in the area.

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

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Risk rating

How 1635 Clay 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
22th percentile

Out of 1125 buildings in this neighborhood, 878 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
26%
No DBI
violation
74%
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.

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 23.5%
Moderate concern 59.6%
Severe concern 16.9%
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

1635 Clay St event timeline

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

2025
Building Permit Jan 22
Exterior stair repair in common area, less than 50%, not visible from the street. replace with new wood in-kind.
$4,500 · Complete

See all 12 events

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

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Every record we have

Full data for 1635 Clay 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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