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3463-3465 20Th St

Inner Mission, SF 94110 3610031 2 units · 2 fl · 1909

This building has more problems than most buildings in this neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

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 3463-3465 20Th 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 1909
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RM1
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 built1909
Total area2,350 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3610031
Ownership

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

Owner name
Smz Landholdings Llc
Mailing address
720 York St Ste 103 San Francisco CA 94110
Last sale
032420

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.

3465 20th St, San Francisco, CA 94110
3463 20th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The property at 3463-3465 20th Street is a two-unit, two-story multi-family residential building located in San Francisco's Inner Mission neighborhood. Built in 1909 and currently owned by Smz Landholdings LLC, this flats/duplex structure has undergone several significant events throughout its history. Most notably, the building experienced fire damage in May 2011 from an adjacent building's fire, leading to repairs that included structural work on the roof, siding, and interior spaces, with completion in 2012. In 2018, substantial interior renovations were performed on the lower unit, including kitchen and bathroom remodeling, heating system upgrades, and new appliances, costing nearly $124,000.

The building has faced various maintenance and compliance issues, including several complaints and violations in 2006 related to unauthorized construction work, including bathroom remodeling, demolition, and plumbing changes. More recent concerns emerged in 2020 regarding potential structural problems with a laundry line, unpermitted grading work, and backyard maintenance issues. The property has generated multiple 311 calls in late 2024 and early 2025, primarily related to garbage and debris on the property, though most were resolved promptly. There are also records of historical tenant issues, including a tenant eviction under the Ellis Act, with indications that the landlord planned to donate the use of the apartments to the Capp Street Foundation. The building's electrical system received attention in 2011 with megger testing and fixture installation work, and there was a plumbing permit issued in 2006.

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

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Risk rating

How 3463-3465 20Th 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
24th percentile

Out of 2380 buildings in this neighborhood, 1809 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
47%
No DBI
violation
53%
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.

Permit rate, owner's portfolio

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

Neighborhood location

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

12-Month severity forecast
No violation 42.3%
Moderate concern 41.1%
Severe concern 16.6%
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

3463-3465 20Th St event timeline

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

2026
311 Request May 15
Garbage and debris
other loose garbage debris yard waste
311 RequestMay 05
Other including abandoned toter

See all 7 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3463-3465 20Th 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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