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641-643 27Th Ave

Central Richmond, SF 94121 1570003C 2 units · 3 fl · 2013

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 Central Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 641-643 27Th 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 2013
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units2
Floors3
Year built2013
Total area3,521 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1570003C
Ownership

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

Owner name
Gallagher Gerard J
Mailing address
1517 Howard Ave Burlingame CA 94010
Last sale
031214

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.

643 27th Ave, San Francisco, CA 94121
641 27th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 641-643 27th Avenue in the Central Richmond district is a three-story multi-family residential building constructed in 2013, containing two units and owned by Gerard J. Gallagher. The building was constructed to replace a two-story residence that was demolished in November 2007, with the initial building permit for a four-story structure costing $920,000. During construction, several permits were issued for modifications and improvements, including changes to the rear retaining walls (March 2013), temporary excavation shoring ($30,000, August 2012), and various plumbing and electrical installations throughout 2013. The building features modern amenities including two kitchens, seven bathrooms, two washers/dryers, radiant heating systems, and three 200-amp electrical panels.

The construction process experienced several challenges, as evidenced by multiple building violations from 2003-2005, including illegal demolition concerns and security issues at the construction site, with complaints about improper barricades, dumped debris, and graffiti. All these violations were eventually abated by 2013. More recently, there have been recurring parking-related issues near the property, with multiple 311 calls regarding sidewalk parking and driveway blocking between late 2023 and 2024, though these are typical urban challenges not directly related to the building's condition. A pavement defect complaint from February 2024 is currently open. The building and its construction history show proper code compliance and completion of necessary permits, with no active violations or complaints regarding the building's current condition.

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

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Risk rating

How 641-643 27Th 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
100th percentile

Out of 2250 buildings in this neighborhood, 0 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
96%
No DBI
violation
4%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Estimated permit spend (past 7 years)

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

Neighborhood location

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

12-Month severity forecast
No violation 89.5%
Moderate concern 5.9%
Severe concern 4.6%
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

641-643 27Th Ave event timeline

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

2026
311 Request Jan 03
Blocking driveway cite only
Parking Enforcement

See all 1 events

Full history back to 2026 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 641-643 27Th Ave apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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