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636-638 Natoma St

South of Market, SF 94103 3727051 3 units · 3 fl · 1906

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 South of Market
At or below average
avg 3.3
0
FewerMore

This building has 0 novs (7y), at or below the South of Market average of 3.3.

Rent & eviction protection

Is 636-638 Natoma 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 1906
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RED
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
Units3
Floors3
Year built1906
Total area4,070 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3727051
Ownership

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

Owner name
Chui & Law Family Trust
Mailing address
Chui Jason & Law Magdalena 1125 Longton Dr San Ramon CA 94582
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.

636 Natoma St, San Francisco, CA 94103
638 Natoma St, San Francisco, CA 94103
Augrented Insights
Initial analysis

The three-story multi-family residential building at 636-638 Natoma Street, owned by the Chui & Law Family Trust, was constructed in 1906 and contains three units. The property has a documented history of compliance-related improvements, with multiple building permits issued in the 1980s through 1992 specifically aimed at bringing the structure into compliance with municipal codes, including a significant permit in 1992 valued at $28,389. The building underwent a health and safety inspection in March 2011, which revealed several safety issues that were subsequently addressed and abated by April 2011. These included the need for proper deadlatch locks at exit doors, installation of self-closing devices at exterior doors, handrail requirements, and concerns regarding garbage receptacle placement. In 2008, a complaint about a wooden utility ladder for roof access was filed and resolved by early 2009.

Recent external environmental conditions around the property have presented challenges, particularly evident through multiple 311 calls in 2023-2024 regarding street cleaning issues. These reports, which were all resolved, included incidents of human waste, debris, and graffiti on or near the building. The most recent documented building-related permit was issued in 2014 for street space usage with a minimal cost of $20, while the most recent direct building violation records are from 2011, suggesting no significant internal building code violations have been recorded in recent years. The property's historical permit activity indicates regular attention to code compliance over the decades, with no active violations currently on record.

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

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Risk rating

How 636-638 Natoma 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
59th percentile

Out of 430 buildings in this neighborhood, 176 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
75%
No DBI
violation
25%
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.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

12-Month severity forecast
No violation 39.0%
Moderate concern 22.5%
Severe concern 38.5%
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

636-638 Natoma St event timeline

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

2026
311 Request Mar 31
Garbage and debris
furniture
311 RequestMar 05
Garbage and debris

See all 5 events

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

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Every record we have

Full data for 636-638 Natoma 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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