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632-634 Natoma St

South of Market, SF 94103 3727050 3 units · 3 fl · 1907

This building has a higher-than-average number of open problems nearby. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

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 632-634 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 1907
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 built1907
Total area3,965 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3727050
Ownership

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

Owner name
Sofia P Rillanos Revoc Lvg
Mailing address
Rillanos Sofia P Ttee 634 Natoma St San Francisco CA 94103
Last sale
111912

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.

634 Natoma St, San Francisco, CA 94103
632 Natoma St, San Francisco, CA 94103
Augrented Insights
Initial analysis

The triplex located at 632-634 Natoma Street in the South of Market neighborhood is a three-story building constructed in 1907, currently owned by Sofia P Rillanos Revoc Lvg and consisting of three flats/duplex units. The building has experienced several significant maintenance issues throughout its history, with the most notable recent concerns emerging in 2020 when multiple complaints were filed regarding structural problems, including reports of the building tilting and rodent infestations in the basement. These structural and maintenance issues seem to indicate a pattern of deteriorating building conditions. The property has undergone various repairs, including stair repairs in 2008 due to dry rot (costing $12,000 initially, revised to $8,000), and has addressed several safety concerns over the years.

More recently, the building has faced ongoing fire safety compliance issues, with violations and complaints related to fire extinguishers and sprinkler systems as recently as 2023 and 2024. A violation was issued in October 2024 regarding sprinkler service and extinguisher service requirements. The building's safety history includes multiple fire safety-related violations in 2008, including the need for fire extinguishers, removal of roof access ladders, and egress obstructions, all of which were subsequently abated. The property has also shown recurring issues with its fire suppression systems, as evidenced by the 2023 fire complaint regarding sprinklers/standpipe systems, which was corrected by November 2023. While the building's permits indicate some maintenance work has been performed over the years, including structural repairs and safety improvements, the recurring nature of safety violations and maintenance complaints suggests ongoing challenges with building upkeep and compliance.

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

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Risk rating

How 632-634 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
30th percentile

Out of 430 buildings in this neighborhood, 301 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
50%
No DBI
violation
50%
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.

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 30.7%
Moderate concern 31.3%
Severe concern 38.1%
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

632-634 Natoma St event timeline

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

2026
311 Request Apr 16
Garbage and debris
other loose garbage debris yard waste

See all 12 events

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

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Every record we have

Full data for 632-634 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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