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721 Kansas St

Potrero Hill, SF 94107 4073019 2 units · 1 fl · 1904

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 Potrero Hill
At or below average
avg 1.1
0
FewerMore

This building has 0 novs (7y), at or below the Potrero Hill average of 1.1.

Rent & eviction protection

Is 721 Kansas 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 1904
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
Floors1
Year built1904
Total area1,995 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot4073019
Ownership

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

Owner name
Visona-Von Welczeck Fmly Tr
Mailing address
Giuseppe Visona & Diana Von 15 Upper Alcatraz Mill Valley CA 94941
Last sale
111296

Landlord portfolio

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

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Augrented Insights
AI summary

The property at 721 Kansas Street is a two-unit, single-story multi-family residential building located in Potrero Hill, constructed in 1904 and currently owned by the Visona-von Welczeck Family Trust. The building has undergone several significant improvements over the past three decades, with the most substantial work occurring in 1997 involving second-floor renovations including wall modifications, bathroom additions, and closet updates. Other notable historical maintenance includes termite repairs with kitchen and window upgrades in 1989, though a 1993 permit for window replacement work is recorded as expired.

The property has experienced a recent period of recurring parking-related issues between 2022 and 2024, with multiple complaints about vehicles blocking driveways and parking illegally, particularly during 2022 when several reports were filed regarding sidewalk parking by motorcycles. While these incidents were subsequently investigated by parking enforcement, officers were often unable to validate the reported violations. The most recent incidents occurred in 2023 and 2024, including street cleaning complaints and a driveway blocking claim, though these were also unable to be validated or were resolved through official channels. Two general cleaning issues were reported and resolved in 2023, suggesting some minor maintenance needs in the immediate vicinity of the building's entrance.

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Risk rating

How 721 Kansas 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
64th percentile

Out of 726 buildings in this neighborhood, 261 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
81%
No DBI
violation
19%
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.

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 severity forecast
No violation 76.7%
Moderate concern 17.1%
Severe concern 6.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

721 Kansas St apartment reviews

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The story over time

721 Kansas St event timeline

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

2025
311 Request Mar 31
Garbage and debris
furniture

See all 1 events

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

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Every record we have

Full data for 721 Kansas 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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