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470 4Th Ave

Inner Richmond, SF 94118 1541029 2 units · 2 fl · 1907

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 Inner Richmond
At or below average
avg 0.9
0
FewerMore

This building has 0 novs (7y), at or below the Inner Richmond average of 0.9.

Rent & eviction protection

Is 470 4Th Ave 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
2 units
Property type
Multi-Family Residential
Zoning
RH2
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 built1907
Total area1,950 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1541029
Ownership

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

Owner name
Chen Family Trust
Mailing address
Simon & Jane Lee Chen Trust 1866 27Th Ave San Francisco CA 94122
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

The Chen Family Trust owns this two-unit, two-story multi-family residential building located at 470 4th Avenue in the Inner Richmond neighborhood. Built in 1907, this flats and duplex-style property has undergone several documented improvements over the past three decades. The most recent significant building improvement was a $9,000 reroofing project initiated in 2003, though this permit has since expired. In 1994, the property underwent two notable renovations: bathroom remodels on both floors and replacement of exterior sheathing to comply with Section 1708 regulations. An attempted three-story rear addition and ground-level exercise room project proposed in 1993 was withdrawn before completion.

The property has experienced several infrastructural and maintenance issues over the years, including a sewage backup incident in 2016 that required intervention from PUC Sewer Operations, which was successfully resolved. There have been two sidewalk cleaning incidents reported in 2021 and 2022 involving loose garbage. The most significant pattern of issues relates to parking enforcement, with eight documented incidents of blocked driveways between 2016 and 2023, resulting in three citations being issued to offending vehicles. A sidewalk defect was reported in 2013, but inspection revealed no actionable condition at that time. While the building's historical permit records show regular maintenance and improvements, the more recent parking enforcement issues represent the most frequent type of incident associated with this address.

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

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Risk rating

How 470 4Th Ave'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
77th percentile

Out of 1723 buildings in this neighborhood, 396 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.

Building age

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

Estimated permit spend (past 7 years)

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

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 83.1%
Moderate concern 12.9%
Severe concern 4.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

470 4Th Ave apartment reviews

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The story over time

470 4Th Ave 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 470 4Th Ave 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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