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3101 Castro St

Glen Park, SF 94131 6727024 3 units · 2 fl · 1928

This building has significantly more problems than most nearby buildings. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Glen Park
At or below average
avg 1.4
0
FewerMore

This building has 0 novs (7y), at or below the Glen Park average of 1.4.

Rent & eviction protection

Is 3101 Castro 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 1928
2 or more units
3 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
Units3
Floors2
Year built1928
Total area2,373 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6727024
Ownership

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

Owner name
Vu Steve D & Mai-Vu Kathy H
Mailing address
3101 Castro St Apt C San Francisco CA 94131
Last sale
082818

Landlord portfolio

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

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Augrented Insights
AI summary

The property at 3101 Castro Street in Glen Park is a two-story, three-unit multi-family residential building constructed in 1928, currently owned by Steve D. Vu and Kathy H. Mai-vu. The building has undergone several significant renovations in recent years, with the most substantial work completed in 2016-2017 involving a major interior reconfiguration that included the removal of walls to create an open living/dining/kitchen area, kitchen conversion, bathroom remodeling, and the addition of modern amenities such as smoke detectors and appliance installations. This renovation, costing approximately $100,000, was completed in conjunction with comprehensive electrical and plumbing upgrades. The building previously faced several violations in 2009 related to exterior stairs, which were promptly addressed within one month of being cited, including repairs to stairs and installation of handrails to comply with safety regulations. A routine apartment inspection in 2000 also occurred with no noted ongoing issues.

The property's maintenance record appears solid, with all identified violations being addressed in a timely manner. Recent activity at the building primarily consists of parking-related incidents, with multiple reports of illegal parking between June and December 2024, though these are generally external to the property itself. One ongoing infrastructure issue has been reported regarding the curb or curb ramp defect as of October 2024, and there was a brief incident involving garbage and debris in August 2024, which was resolved. The building's electrical service was converted from overhead to underground in 2003, demonstrating attention to infrastructure modernization.

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Risk rating

How 3101 Castro 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
15th percentile

Out of 364 buildings in this neighborhood, 309 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
54%
No DBI
violation
46%
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 age

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

12-Month severity forecast
No violation 43.0%
Moderate concern 35.2%
Severe concern 21.8%
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

3101 Castro 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 3101 Castro 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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