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420 Tehama St

South of Market, SF 94103 3732101 2 units · 2 fl · 1912

This building has more problems than most buildings in this neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in South of Market
Above average
avg 3.3
13
FewerMore

This building has 13 novs (7y), above the South of Market average of 3.3.

Rent & eviction protection

Is 420 Tehama 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 1912
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RSD
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 built1912
Total area2,436 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3732101
Ownership

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

Owner name
Peter A Lommori Trust
Mailing address
Peter A Lommori Trustee 450 Dondee Wy #7 Pacifica CA 94044
Last sale
050500

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-story, two-unit multi-family residential building at 420 Tehama Street, owned by the Peter A Lommori Trust, has experienced significant maintenance and safety issues in recent years, particularly regarding water damage and mold problems. The property, built in 1912, underwent substantial work in 2023-2024 to address various building violations and maintenance needs, including multiple siding replacements, roofing work, and interior repairs. In early 2024, serious water intrusion issues were documented in the light well area, leading to multiple Notices of Violation (NOVs) and required repairs costing between $3,800 and $35,000. The building has a documented history of moisture-related problems, including complaints of mold, dry rot, and water damage dating back to 2021.

Recent improvements to the building include the installation of granite countertops, plumbing updates, and electrical work to replace smoke detectors in 2023. However, persistent issues with lead paint hazards, fire safety violations, and water damage have raised concerns about resident safety. The property underwent multiple roofing projects in 2004, 2016, and most recently in 2024, demonstrating ongoing maintenance attention to critical systems. A tenant buyout occurred in May 2024 for $99,600, representing one unit's termination of tenancy, and there have been recent concerns about exterior maintenance and weatherproofing. The building's location in the South of Market neighborhood has seen recurring issues with garbage and debris on the premises, as evidenced by multiple 311 calls throughout late 2024, though most were promptly resolved. While substantial investment has been made in addressing building violations and maintenance needs, the property has experienced periodic compliance challenges requiring multiple NOVs and follow-up work.

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

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Risk rating

How 420 Tehama 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
29th percentile

Out of 430 buildings in this neighborhood, 305 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
49%
No DBI
violation
51%
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 (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

12-Month severity forecast
No violation 24.2%
Moderate concern 55.2%
Severe concern 20.5%
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

420 Tehama St event timeline

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

2026
311 Request Jun 11
Permit parking
defaced ok
311 RequestJun 04
Blocking driveway cite only

See all 23 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 420 Tehama 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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