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346 San Carlos St

Inner Mission, SF 94110 3609091 2 units · 2 fl · 1880

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 Inner Mission
At or below average
avg 2.6
0
FewerMore

This building has 0 novs (7y), at or below the Inner Mission average of 2.6.

Rent & eviction protection

Is 346 San Carlos 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 1880
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
Floors2
Year built1880
Total area1,956 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3609091
Ownership

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

Owner name
Nafziger Family Trust The
Mailing address
117 Central Ave Burlingame CA 94010
Last sale
050500

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 346 San Carlos Street in the Inner Mission, owned by the Nafziger Family Trust, is a 2-story flats and duplex structure built in 1880. The building's historical permit records show a reroofing project from 1996 and a significant interior modification completed in 1994 that converted two kitchens into bedrooms. The property has been experiencing ongoing issues with street cleanliness and parking violations throughout 2024, with seven documented incidents of garbage and debris requiring municipal street cleaning services between June and December 2024. These incidents, primarily involving loose garbage and yard waste, reflect a recurring cleanliness challenge in the immediate vicinity of the building. Additionally, there have been four documented cases of driveway blocking by various vehicles in 2024, with three resulting in citations, indicating some ongoing challenges with parking compliance in the area. While these external issues have been consistently addressed through municipal services, they represent the most significant recent patterns associated with the property.

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

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Risk rating

How 346 San Carlos 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
98th percentile

Out of 2380 buildings in this neighborhood, 48 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
92%
No DBI
violation
8%
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.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 90.5%
Moderate concern 7.4%
Severe concern 2.0%
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

346 San Carlos St event timeline

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

2026
311 Request Mar 27
Garbage and debris
other loose garbage debris yard waste
311 RequestMar 07
Blocking driveway cite only

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 346 San Carlos 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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