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766 De Haro St

Potrero Hill, SF 94107 4072006

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Potrero Hill
At or below average
avg 1.1
1
FewerMore

This building has 1 novs (7y), at or below the Potrero Hill average of 1.1.

Rent & eviction protection

Is 766 De Haro 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
? units
Property type
Multi-Family Residential
Zoning
RH2
Possibly exempt. Built before 1979 but single-unit — single-family homes and condos may be exempt from the SF Rent Ordinance.

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

Building characteristics
Units
Floors2
Year built1912
Total area1,600 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot4072006
Ownership

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

Owner name
George D & Thelma Giannakar
Mailing address
George D Giannakaras Truste 1164 Tanglewood Way San Mateo CA 94403
Last sale
091997

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-story multi-family residential building at 766 De Haro Street in Potrero Hill, owned by George D & Thelma Giannakar, was constructed in 1912 and has no official unit count recorded. The property has exhibited several concerning maintenance issues, most notably a recent complaint filed in March 2024 regarding faulty gas stove ventilation and a significant hole between the wall and floor in the back sunroom, though this case is currently listed as not active. The building's exterior and surrounding infrastructure have experienced recurring problems, particularly with the sidewalk, which has been the subject of multiple 311 calls between 2021 and 2022 for defects including lifting and collapse, with one case remaining open as of August 2022. Earlier incidents include a 2015 report of automotive debris, a flickering streetlight in 2014, and two separate complaints in 2011 regarding garbage cans being left out continuously. The only building permit on record is from 1992 for reroofing work, though this permit has since expired. While some of these issues are relatively minor and have been resolved, the recent complaints about ventilation and structural openings suggest potential concerns regarding resident comfort and safety.

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

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Risk rating

How 766 De Haro 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
8th percentile

Out of 726 buildings in this neighborhood, 668 are predicted to be safer.

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

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 50.1%
Moderate concern 35.5%
Severe concern 14.4%
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

766 De Haro St event timeline

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

2025
Building Permit Mar 17
Repairs at front deck, 3rd level, less than 50% replacement to comply with nov #202533978
$1,000 · Complete
Planning RecordMar 17
Approved for the following scope of work - REPAIRS AT THE FRONT DECK, 3RD LEVEL, LESS THAN 50% REPLACEMENT TO COMPLY WITH NOV #202533978

See all 5 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 766 De Haro 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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