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1455-1457 20Th Ave

Central Sunset, SF 94122 1833008A 2 units · 2 fl · 1945

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 Sunset
At or below average
avg 0.7
0
FewerMore

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

Rent & eviction protection

Is 1455-1457 20Th 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 1945
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 built1945
Total area2,534 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1833008A
Ownership

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

Owner name
Francisco Santos C & Corazo
Mailing address
Francisco & Corazon Santos, 2134 22Nd Ave San Francisco CA 94116
Last sale
091911

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.

1455 20th Ave, San Francisco, CA 94122
1457 20th Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

The two-unit residential building at 1455-1457 20th Avenue, owned by Francisco Santos C & Corazo, is a two-story flats and duplex structure built in 1945 in the Central Sunset neighborhood. The property has undergone several significant improvements over the years, most notably in 2019 when it received both stucco repairs to its front facade (costing $10,000) and had a lead paint containment issue reported and subsequently addressed. In 2008, substantial renovations were completed, including the construction of a new ground floor bedroom and bathroom (with associated plumbing and electrical work totaling $25,000). Earlier improvements included a complete window replacement project in 2001, transitioning from wood to vinyl frames for ten windows, including four front-facing units.

The building's maintenance and safety records show regular upkeep and modernization efforts, including multiple electrical upgrades between 2004-2008 for various improvements such as garage wiring and washer/dryer installations. The property has experienced recurring issues with blocked driveways, particularly between 2020-2024, with several citations issued though some cases could not be verified. Additional incidents affecting the immediate vicinity included occasional reports of graffiti, hazardous materials, and waste cleanup requirements in the surrounding area (though these were not directly related to the building itself). The most recent building-related activity on record is from 2019, with the completion of stucco repairs, which was handled by Innovate Design Construction.

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

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Risk rating

How 1455-1457 20Th 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
38th percentile

Out of 814 buildings in this neighborhood, 505 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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

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.

12-Month severity forecast
No violation 82.1%
Moderate concern 14.7%
Severe concern 3.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

1455-1457 20Th Ave event timeline

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

2026
311 Request Jun 15
Blocking driveway cite only
Parking Enforcement

See all 4 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1455-1457 20Th Ave apartments

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

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