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1637 Clay St

Nob Hill, SF 94109 0621019 12 units · 3 fl · 1911

This building has significantly more problems than most nearby buildings. 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
5
FewerMore

This building has 5 novs (7y), above the Nob Hill average of 2.4.

Rent & eviction protection

Is 1637 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 1911
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 built1911
Total area7,110 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0621019
Ownership

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

Owner name
Hjc Enterprises Llc
Mailing address
Calvert Yee, A Member 1543 Larkin St San Francisco CA 94109
Last sale
062421

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 12-unit multi-family residential building at 1637 Clay Street in Nob Hill, owned by Hjc Enterprises Llc, has undergone significant changes and faced several challenges since its 1911 construction. Most notably, the building experienced substantial water damage in early 2024, affecting units B, 3, 7, and 11, which required $16,500 in repairs to replace water-damaged sheetrock. This incident raised concerns about worker safety and lead paint compliance during subsequent reconstruction, as reported in tenant complaints. The building's recent history shows substantial improvements to safety systems, including the installation of a comprehensive fire sprinkler system for ground floor ADU units in 2019 ($18,000), at a cost of $14,000, and a new fire alarm monitoring unit in 2020. The property underwent significant structural modifications between 2018-2022, including the addition of ADUs (Accessory Dwelling Units) at the ground floor, with associated structural improvements and electrical work. The building was designated as a Tier 3 soft-story structure, and records indicate that required seismic retrofitting work has been completed.

The property's inspection history reveals various issues addressed promptly, including multiple fire safety violations in 2001 related to smoke enclosure doors and combustible storage, and more recent fire safety concerns in 2020 regarding combustible materials and weeds. The building has maintained active compliance with safety regulations, with most violations being resolved promptly. Recent maintenance records show attention to basic upkeep, though there have been periodic reports of graffiti and debris requiring attention. The property's utility systems have seen significant upgrades, including recent electrical improvements in 2020-2021 with new meters and electrical infrastructure. Historical records indicate past plumbing modifications, including solar water heating system work in 2013, though the primary focus has been on fire safety system improvements and structural modifications in recent years.

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

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Risk rating

How 1637 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
19th percentile

Out of 1125 buildings in this neighborhood, 911 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
24%
No DBI
violation
76%
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.

Building size

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

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 29.7%
Moderate concern 36.7%
Severe concern 33.6%
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

1637 Clay St event timeline

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

2024
Building Violation (NOV) May 16
Building violation
It is the property owner's responsibility to be present or direct his/her representative to attend, the reinspection as scheduled on this n…
Building Violation (NOV)May 16
Building violation

See all 18 events

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

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Every record we have

Full data for 1637 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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