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638 Moraga St

Inner Sunset, SF 94122 1931020 2 units · 2 fl · 1940

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 Sunset
At or below average
avg 1.1
0
FewerMore

This building has 0 novs (7y), at or below the Inner Sunset average of 1.1.

Rent & eviction protection

Is 638 Moraga 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 1940
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 built1940
Total area2,575 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1931020
Ownership

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

Owner name
Bertha M T Ouyang Trust
Mailing address
Yeh Frank G Successor Trust 1300 Terrace Dr Millbrae CA 94030
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 two-unit residential building at 638 Moraga Street in the Inner Sunset, owned by the Bertha M T Ouyang Trust, is a 1940s flats and duplex structure that has undergone several significant maintenance and improvement projects over the years. Most recently, in September 2023, a violation was issued regarding building contact information, though this was subsequently abated. The property has a history of addressing structural issues, including repairs to wooden siding in 2015, dry rot remediation in 2009, reroofing in 2007, and the installation of aluminum windows in 1992. A notable plumbing upgrade occurred in 2012 with the replacement of the house trap.

The building's outdoor area has experienced multiple tree-related issues, with the most recent incidents in 2024 involving an overgrown tree and a general request for urban forestry services. Between 2018 and 2020, there were several reports of damaged trees, fallen trees, and pruning requests, all of which were resolved. The property has also faced some aesthetic challenges, including sidewalk graffiti in 2019, which was promptly addressed. Three fire-related complaints have been recorded, with the most recent in 2023 resulting in a violation for building contact information, though the property has generally maintained compliance with necessary corrections in previous incidents. The building's maintenance record shows regular attention to both structural and exterior upkeep, with most historical permits indicating proper completion of work.

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

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Risk rating

How 638 Moraga 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
61th percentile

Out of 1493 buildings in this neighborhood, 582 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
84%
No DBI
violation
16%
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.

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 82.7%
Moderate concern 12.2%
Severe concern 5.1%
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

638 Moraga St event timeline

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

2023
Fire Complaint Sep 11
Uncategorized Complaint
Violation Issued

See all 3 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 638 Moraga 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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