Free SF apartment background check

600 Silliman St

Portola, SF 94134 5918032 2 units · 2 fl · 1925

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
Above average
avg 1.8
4
FewerMore

This building has 4 novs (7y), above the Portola average of 1.8.

Rent & eviction protection

Is 600 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 1925
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
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 built1925
Total area2,534 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot5918032
Ownership

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

Owner name
Chen Jinna
Mailing address
900 Silver Ave San Francisco CA 94134
Last sale
121918

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 2-unit, 2-story residential building at 600 Silliman Street in Portola, owned by Chen Jinna, was constructed in 1925 and has undergone several significant renovations, most notably in 2012. During a substantial renovation period from September to December 2012, the property received comprehensive upgrades including complete kitchen and bathroom remodels in both units, electrical system overhauls, plumbing improvements including new water heaters, and the installation of a new heating system. The renovation also included the replacement of all exterior windows, reroofing, and garage door updates, totaling approximately $60,000 in improvements.

The building experienced a series of violations in early 2018 related to water damage, structural issues, and safety concerns such as missing smoke alarms and carbon monoxide detectors, though these were all abated by May 2018. More recently, in July 2023, there was a complaint regarding flaking/peeling paint on the exterior walls, which was addressed by August 2023. The property has undergone multiple infrastructure improvements including a rear stair replacement in 1995 and various maintenance works, with the most recent building permit being for wood replacement work in 2018.

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

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Risk rating

How 600 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
55th percentile

Out of 255 buildings in this neighborhood, 115 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
78%
No DBI
violation
22%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

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 53.2%
Moderate concern 34.8%
Severe concern 12.0%
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

600 Silliman St event timeline

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

2026
Building Permit Apr 27
For documentation purpose the legal use of the bldg is two residential dwelling units. this determination is based on the review of city records. no work to be performed.
$1 · Complete

See all 12 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 600 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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