Free SF apartment background check

431 Walnut St

Presidio Heights, SF 94118 1020004 4 units · 2 fl · 1904

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 Presidio Heights
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Presidio Heights average of 1.2.

Rent & eviction protection

Is 431 Walnut 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 1904
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RM1
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
Units4
Floors2
Year built1904
Total area3,556 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1020004
Ownership

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

Owner name
Rodger E & Charlene A Simon
Mailing address
Rodger E & Charlene A Simon 1735 Oakdell Dr Menlo Park CA 94025
Last sale
103194

Landlord portfolio

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

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Augrented Insights
Initial analysis

The four-unit, two-story multi-family residential building at 431 Walnut Street in Presidio Heights, owned by Rodger E & Charlene A Simon, has undergone several significant maintenance and improvement projects since its construction in 1904. Most recently, in late 2022, the building received a substantial reroofing renovation costing $42,850, following earlier roofing work in 1990 and two kitchen and bathroom remodels in the mid-1980s. A notable safety upgrade was completed in 2004 with the installation of 5/8" bolts along all mud sill plates, improving the building's structural integrity. The property experienced a fire safety violation in 2011 regarding combustible storage, which was resolved within two months through compliance with sprinkling requirements. There was an attempted story addition project in 2021 that was ultimately cancelled, and the building has been subject to routine housing inspections in 2000, 2007, and 2011, with no ongoing violations.

The building's recent history includes several infrastructure-related incidents in the surrounding area, such as a flooding issue reported in February 2009 and a pavement defect noted later that same year. More recent 311 calls from 2020 to 2022 primarily relate to street cleaning, homeless concerns, and water quality, though these appear to be external to the building itself. The property has maintained a record of addressing violations and completing permits, with no active building violations or unresolved complaints as of the latest data. While the building's age and history of various improvements suggest ongoing maintenance attention, there are currently no significant safety or habitability concerns on record.

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

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Risk rating

How 431 Walnut 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
62th percentile

Out of 181 buildings in this neighborhood, 69 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
82%
No DBI
violation
18%
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 age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 74.6%
Moderate concern 16.8%
Severe concern 8.6%
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

431 Walnut St event timeline

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

2022
Building Permit Nov 02
Reroofing
$42,850 · Complete

See all 2 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 431 Walnut St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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