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475-477 Crestmont Dr

Forest Knolls, SF 94131 2638004 2 units · 2 fl · 1968

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 Forest Knolls
At or below average
avg 1.9
0
FewerMore

This building has 0 novs (7y), at or below the Forest Knolls average of 1.9.

Rent & eviction protection

Is 475-477 Crestmont Dr 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 1968
2 or more units
2 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
Units2
Floors2
Year built1968
Total area4,465 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot2638004
Ownership

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

Owner name
Sieper William J & Jean
Mailing address
475 Crestmont Dr San Francisco CA 94131
Last sale
090617

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.

477 Crestmont Dr, San Francisco, CA 94131
475 Crestmont Dr, San Francisco, CA 94131
Augrented Insights
Initial analysis

The two-unit residential building located at 475-477 Crestmont Drive in Forest Knolls is a two-story flats and duplex structure built in 1968, currently owned by William J. and Jean Sieper. The building's maintenance record shows two significant structural interventions: a deck repair due to dry rot in 1992 and a complete reroofing project in 1989, both of which were properly completed according to permit records.

The property has experienced multiple reports of abandoned vehicles in the vicinity between 2013 and 2019, with six separate incidents recorded through the Department of Public Transportation Abandoned Vehicles Work Queue. These vehicles, including various makes such as Lexus, Ford, BMW, and Honda, were typically resolved quickly as they were gone upon inspection, with resolution dates ranging from one to several days after the initial reports. More recently, there was one report of an encampment in September 2023, though this was marked as "Closed Unable to Locate" by the HSOC Queue agency. While the building's permit history shows attention to structural maintenance, the area around the property has experienced recurring issues with abandoned vehicles, though these appear to be promptly addressed by authorities when reported.

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

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Risk rating

How 475-477 Crestmont Dr'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
80th percentile

Out of 50 buildings in this neighborhood, 10 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
88%
No DBI
violation
12%
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 location

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

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 83.2%
Moderate concern 10.5%
Severe concern 6.4%
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

475-477 Crestmont Dr event timeline

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

2025
311 Request Dec 19
Garbage and debris
other bagged boxed contained garbage
311 RequestDec 19
Garbage and debris

See all 2 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 475-477 Crestmont Dr 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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