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4810-4812 17Th St

Cole Valley/Parnassus Heights, SF 94117 1287009A 2 units · 2 fl · 1946

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Cole Valley/Parnassus Heights — not a forecast
At or below average
avg 0.9
0
FewerMore

This building has 0 novs (7y), at or below the Cole Valley/Parnassus Heights average of 0.9.

Rent & eviction protection

Is 4810-4812 17Th 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 1946
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1946
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units2
Floors2
Year built1946
Total area2,394 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1287009A
Ownership

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

Mailing address
Darren D Bianchi & Diana M 2022 Golden Gate Ave San Francisco CA 94115
Last sale
August 12, 1993

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

4812 17th St, San Francisco, CA 94117
4810 17th St, San Francisco, CA 94117
Augrented Insights
Initial analysis

The two-unit multi-family residential building at 4810-4812 17th Street in the Parnassus/Ashbury Heights neighborhood, built in 1946 and owned by the Bianchi Wolf Revocable Trust, has undergone several significant improvements in recent years. Most notably, in 2018, major renovations were completed in both units, including a kitchen remodel with new cabinets, counters, fixtures, and LED recessed lighting, as well as bathroom improvements involving a new ventilation fan and shower modifications. This project also included window work and was accompanied by plumbing and electrical permits totaling approximately $50,000 in improvements. Prior to this, in 2017, the building underwent necessary infrastructure maintenance with the replacement of the sewer lateral and house trap system. Earlier improvements included a comprehensive window replacement project in 2012 that upgraded all bedroom windows to meet egress requirements, and a reroofing project completed in 2003.

The property has faced some recent challenges, particularly in relation to parking issues and street maintenance. Between September 2023 and October 2024, there were multiple incidents of vehicles blocking driveways, with several resulting in citations. Two abandoned vehicle reports were filed in late 2023, though one vehicle was gone upon inspection. A property damage incident involving a tree was reported in November 2024 and remains open. Additionally, there have been reports of human or animal waste on the property in October 2023 that is still pending resolution. The building's maintenance history shows regular upkeep and modernization efforts, with no documented health or safety violations in recent records.

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

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Risk rating

How 4810-4812 17Th 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
83rdpercentile

Out of 526 buildings in this neighborhood, 89 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
87%
No DBI
violation
13%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month risk forecast
Low failure risk 13%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

4810-4812 17Th St apartment reviews

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On the map

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The story over time

4810-4812 17Th St event timeline

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

2026
311 Request Feb 28
Parking on sidewalk
Parking Enforcement
311 RequestJan 31
Garbage and debris

See all 5 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4810-4812 17Th St apartments

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

Side by side

How 4810-4812 17Th St compares to the neighborhood

This building against comparable properties in Cole Valley/Parnassus Heights. Toggle filters to narrow the peer group.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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