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642 Natoma St

South of Market, SF 94103 3727053 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 642 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 area4,336 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3727053
Ownership

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

Owner name
Patel Ranjanben S & Anil
Mailing address
642 Natoma St San Francisco CA 94103
Last sale
082118

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-unit residential building at 642 Natoma St, owned by Ranjanben S & Anil Patel, is a 3-story TIC structure built in 1906 in San Francisco's South of Market neighborhood. The building has undergone several significant improvements in recent years, most notably a comprehensive $250,000 renovation in 2015 that included remodeling all three units' kitchens and bathrooms, adding new bathrooms and closets, and installing new furnaces. This was accompanied by complete electrical overhauls, with each unit receiving dedicated 100-amp services and new appliances, as well as a 200-amp main line installation in 2016. Structural improvements were made in 2018 with voluntary strengthening of the basement walls, and maintenance work including a $23,850 reroofing project that same year. Recent plumbing work included a house trap replacement in 2020.

The building's history shows regular maintenance and improvements, with several safety inspections conducted in the past. Although there was one fire violation in 2007 regarding fire extinguishers, this was promptly abated within one month. While there have been multiple fire alarm activations recorded (primarily unintentional), smoke detector activations, and one gas leak incident, none resulted in civilian injuries or significant damage. The property has experienced recurring issues with abandoned furniture and debris on the sidewalk, as evidenced by multiple 311 calls in 2024, some of which remain open, indicating ongoing cleanliness concerns in the immediate vicinity. The most recent building-related activity was a curb defect report in November 2024. The owners appear to have maintained the property adequately, with most major improvements and repairs being properly documented and completed.

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

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Risk rating

How 642 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
57th percentile

Out of 430 buildings in this neighborhood, 185 are predicted to be safer.

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

Building size

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

12-Month severity forecast
No violation 59.2%
Moderate concern 26.6%
Severe concern 14.3%
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

642 Natoma St event timeline

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

2025
Fire Incident Oct 23 Serious
735 Alarm system sounded due to malfunction
Injuries: 0 · Fatalities: 0
Fire IncidentOct 23
700 False alarm or false call, other

See all 11 events

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

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Every record we have

Full data for 642 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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