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66 Corwin St

Eureka Valley/Dolores Heights, SF 94114 2714024 22 units · 5 fl · 1964

This building has far more open problems than almost any other in the neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Eureka Valley/Dolores Heights
At or below average
avg 1.3
1
FewerMore

This building has 1 novs (7y), at or below the Eureka Valley/Dolores Heights average of 1.3.

Rent & eviction protection

Is 66 Corwin 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 1964
2 or more units
22 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
Units22
Floors5
Year built1964
Total area19,289 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2714024
Ownership

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

Owner name
Dotterweich Family Trust
Mailing address
Dotterweich Michael G & Mar P.O. Box 1667 Burlingame CA 94011
Last sale
030995

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 5-story, 22-unit multi-family residential building at 66 Corwin Street, owned by Dotterweich Family Trust, was constructed in 1964 and has undergone several significant safety and maintenance upgrades over the years. Most notably, the building completed a mandatory soft-story retrofit in 2015 (Tier 2) which included the installation of new concrete grade beams and shear walls, demonstrating compliance with seismic safety requirements. The property has experienced recurring heating system issues, with documented complaints about lack of heat in 1995 and 1997, though it has since benefited from major mechanical upgrades including three separate boiler replacements in 2018 (a domestic hot water boiler and two hydronic boilers) and a sewer line re-routing in 2019.

Recent records indicate ongoing fire safety maintenance needs, with a current open violation as of November 2023 related to sleeping area requirements, though this follows a pattern of generally prompt corrective actions for previous fire violations such as alarm system maintenance in 2017 and street numbering in 2015. The building's maintenance history shows numerous window and garage door installations in the early 1990s, roof repairs in 1989, and various plumbing upgrades. The property has generated multiple 311 calls in recent years primarily related to street cleaning and debris issues outside the building, with the most recent being in December 2024 involving human waste or urine. While these exterior maintenance issues are being addressed, they represent ongoing challenges in the immediate vicinity of the property.

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

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Risk rating

How 66 Corwin 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
3th percentile

Out of 1278 buildings in this neighborhood, 1240 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
20%
No DBI
violation
80%
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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Number of floors

Building height affects maintenance complexity and is one of the size signals the model uses.

12-Month severity forecast
No violation 25.2%
Moderate concern 63.3%
Severe concern 11.5%
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

66 Corwin St event timeline

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

2025
Building Violation (NOV) May 01
No permit to operate the boiler. serial no c18290015, cmc 1022. monthly monitoring fee applies. code sec: sfbc 110a, table 1a-k
DBI ComplaintMay 01
Needs to renew boiler permit for permit no 147547 , serial no c18290015

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 66 Corwin 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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