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639 Silliman St

Portola, SF 94134 5931025

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 Portola
At or below average
avg 1.8
0
FewerMore

This building has 0 novs (7y), at or below the Portola average of 1.8.

Rent & eviction protection

Is 639 Silliman 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 1923
2 or more units
? units
Property type
Multi-Family Residential
Zoning
RH1
Possibly exempt. Built before 1979 but single-unit — single-family homes and condos may be exempt from the SF Rent Ordinance.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units
Floors2
Year built1923
Total area2,500 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot5931025
Ownership

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

Owner name
Treanor Paul & Ann
Mailing address
250 Hearst Ave San Francisco CA 94131
Last sale
102201

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-story multi-family residential building at 639 Silliman Street in the Portola neighborhood, owned by Paul & Ann Treanor, is a flats and duplex structure built in 1923. The building has undergone limited documented improvements, with the most significant being a $10,000 renovation in 2002 which included kitchen cabinet replacement, countertop installation, trim work, painting, and hardwood floor refinishing on the second floor, though this permit has since expired. A notable incident occurred in February 2009 when multiple housing code violations were documented regarding interior surfaces, specifically involving mold and mildew problems on walls and ceilings, as well as the need for painting. These violations were officially abated by March 13, 2009.

More recent activity around the property has primarily involved external maintenance and municipal issues, with the most recent documented case being a mailing request to the Rent Board in October 2023 regarding fee housing inventory. The property has seen several infrastructure-related complaints in 2024, including issues with a damaged side sewer vent cover (July 2024), a water service request for a hydrant replacement (July 2024), and notifications about sidewalk defects (July 2023). The majority of recent complaints (2023-2024) have been related to parking and traffic enforcement matters, including multiple reports of illegal parking, sidewalk parking, and driveway blocking incidents, which have all been resolved through various enforcement actions or inspections.

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

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Risk rating

How 639 Silliman 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
95th percentile

Out of 255 buildings in this neighborhood, 13 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
91%
No DBI
violation
9%
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.

Building age

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

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 82.9%
Moderate concern 10.8%
Severe concern 6.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

639 Silliman St event timeline

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

No dated public records on file yet.
Every record we have

Full data for 639 Silliman 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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