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475-477 35Th Ave

Outer Richmond, SF 94121 1467018 2 units · 3 fl · 1925

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Outer Richmond
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Outer Richmond average of 0.7.

Rent & eviction protection

Is 475-477 35Th 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 1925
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.

Building characteristics
Units2
Floors3
Year built1925
Total area3,521 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1467018
Ownership

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

Owner name
Mario & Winnie W De Senna R
Mailing address
De Senna Winnie W Ttee 121 Agnes Ct Vallejo CA 94589
Last sale
030918

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

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

477 35th Ave, San Francisco, CA 94121
475 35th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 475-477 35th Avenue is a three-story, two-unit multi-family residential building located in San Francisco's Outer Richmond neighborhood. Built in 1925 and currently owned by Mario & Winnie W De Senna R, this flats and duplex-style building has undergone significant renovations over the past decade. The most substantial improvements occurred between 2015-2016, with major remodeling projects on both the first and third floors. In 2015, work was completed on the first floor to create an exercise room, guest room, study, full bathroom, and laundry area, while the third floor received a new study room, bathroom, and kitchen renovations. The following year, additional renovations were performed on the second floor unit to convert an existing kitchen space into a den, relocate the dining room to create a kitchen/dining area, and add a full bathroom, among other updates. These projects were accompanied by necessary plumbing and electrical work, including kitchen relocations, bathroom additions, and lighting upgrades, all of which have been completed successfully.

The building's maintenance history shows attention to basic infrastructure, including reroofing work completed in 2001 (at a cost of $6,500). The property has also experienced recurring issues with sidewalk parking violations, with five documented incidents between 2019-2023, though these are external neighborhood issues rather than building-specific concerns. The most recent building-related activity was a planning record from 2020 indicating the addition of rooms down (full bathroom and laundry sink) with indirect access and no visual connection, along with confirmation that there were no open Building Code Enforcement cases. While the parking enforcement history shows persistent challenges in the immediate vicinity, these are typical urban street issues and not directly related to the building's condition or management.

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

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Risk rating

How 475-477 35Th 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
54th percentile

Out of 1040 buildings in this neighborhood, 478 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
85%
No DBI
violation
15%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Construction spend, owner's portfolio

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

DBI complaint rate, owner's portfolio

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

12-Month severity forecast
No violation 77.9%
Moderate concern 13.1%
Severe concern 9.0%
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

475-477 35Th Ave event timeline

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

No dated public records on file yet.
Every record we have

Full data for 475-477 35Th 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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