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511 Potrero Ave

Potrero Hill, SF 94110 4013022 3 units · 2 fl · 1911

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 511 Potrero 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 1911
2 or more units
3 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
Units3
Floors2
Year built1911
Total area3,224 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot4013022
Ownership

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

Owner name
Darke 2006 Fmly Tr - Surviv
Mailing address
Darke Mangal Ramdas Ttee 511B Potrero Ave San Francisco CA 94110
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-unit residential building at 511 Potrero Avenue, located in San Francisco's Potrero Hill neighborhood, is a two-story flats and duplex structure built in 1911 and currently owned by Darke 2006 Family Trust - Surviv. The property has experienced several significant plumbing and maintenance issues over its history, with the most recent being a house trap replacement completed in December 2022 and an active building complaint from January 2023 regarding an abandoned storefront. Of particular concern, there are unresolved housing inspection complaints from 1994 regarding plumbing issues and a possible illegal unit on the bottom floor, along with a 2017 complaint about sewage problems affecting neighboring properties.

The building's maintenance history includes various permitted work, such as street space improvements in 2011, unit legalization efforts in 1998, interior renovations in 1993, and bathroom/kitchen remodeling in 1988. Several historical issues have been documented, including toxic mold in 2007, though most past violations appear to have been resolved. The property has experienced recurring issues with graffiti, with multiple incidents reported between 2015 and 2023, though these generally have been addressed promptly. Infrastructure maintenance includes a complete roofing project from 1993 (permit status expired) and various plumbing repairs, though some concerns persist about the overall condition of the plumbing system as evidenced by recent service requests. The building's age and history suggest a need for ongoing maintenance attention, particularly regarding plumbing systems, though the immediate health and safety concerns appear to be limited to the unresolved plumbing and unit legalization issues from the 1990s.

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

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Risk rating

How 511 Potrero 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
7th percentile

Out of 726 buildings in this neighborhood, 675 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
44%
No DBI
violation
56%
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.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

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 39.4%
Moderate concern 44.4%
Severe concern 16.3%
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

511 Potrero Ave event timeline

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

2025
DBI Complaint Feb 18
Date last observed: 14-feb-25; time last observed: 12:25; identity of person performing the work: daley's drywall; exact location: main bldg; building type: residence/dwelling work w/o permit; work beyond scope of permit; ; additional information: the construction has been going on for months in and out of the house. its incredibly loud in our house as theyre banging on walls and the workers yell outside. i dont see a permit online active for this address.;
Code Enforcement Section

See all 5 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 511 Potrero Ave 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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