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688-690 44Th Ave

Outer Richmond, SF 94121 1586020E 2 units · 2 fl · 1946

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 Outer Richmond
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Outer Richmond average of 0.7.

Rent & eviction protection

Is 688-690 44Th 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 1946
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 built1946
Total area2,332 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1586020E
Ownership

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

Owner name
Ng Family Trust
Mailing address
Steven & Siu Lai Ng 6693 Rose Bridge Dr Roseville CA 95678
Last sale
021113

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.

690 44th Ave, San Francisco, CA 94121
688 44th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The Ng Family Trust owns this two-unit multi-family residential building located in San Francisco's Outer Richmond neighborhood. Built in 1946, the two-story structure is classified as a Flats & Duplex property. The building's maintenance record shows limited documented work, with only one significant permit on file from 2004 for a reroofing project costing $6,800, though this permit has since expired.

The property has experienced several notable incidents over the past decade. Most concerning is an active complaint filed in June 2019 regarding unauthorized construction work producing excessive noise from hammering and power tools, which reportedly took place without proper permits. In July 2021, there was a sewage system issue involving a 4-inch sewer vent that required intervention from PUC Sewer Operations and was subsequently resolved. Two additional minor incidents occurred in 2014: one involving an abandoned orange Honda motorcycle that was gone when authorities arrived to investigate, and another regarding a flickering streetlight on a wooden pole that PG&E resolved within four days. While these issues suggest occasional maintenance and compliance challenges, it's worth noting that most incidents were addressed and resolved through proper channels.

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

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Risk rating

How 688-690 44Th 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
37th percentile

Out of 1040 buildings in this neighborhood, 655 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.

Neighborhood location

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

DBI complaints, owner's portfolio

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

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

12-Month severity forecast
No violation 80.6%
Moderate concern 14.1%
Severe concern 5.2%
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

688-690 44Th 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 688-690 44Th 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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