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3305-3321 20Th St

Inner Mission, SF 94110 3611001 9 units · 3 fl · 1905

This building has far more open problems than almost any other in the neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Inner Mission
Above average
avg 2.6
6
FewerMore

This building has 6 novs (7y), above the Inner Mission average of 2.6.

Rent & eviction protection

Is 3305-3321 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 1905
2 or more units
9 units
Property type
Multi-Family Residential
Zoning
NC2
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
Units9
Floors3
Year built1905
Total area10,415 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3611001
Ownership

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

Owner name
M Dattani Credit Trust
Mailing address
Kaushik Mulji Dattani, Trus 3305 20Th St San Francisco CA 94110
Last sale
122618

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.

3309 20th St, San Francisco, CA 94110
3319 20th St, San Francisco, CA 94110
3315 20th St, San Francisco, CA 94110
3313 20th St, San Francisco, CA 94110
3317 20th St, San Francisco, CA 94110
2400 Folsom St, San Francisco, CA 94110
3321 20th St, San Francisco, CA 94110
3305 20th St, San Francisco, CA 94110
3307 20th St, San Francisco, CA 94110
3311 20th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The three-story, 9-unit multi-family residential building at 3305-3321 20th Street in the Inner Mission, owned by M Dattani Credit Trust, has undergone significant renovations and faced various maintenance challenges since its construction in 1905. Recent history shows ongoing improvements to meet safety standards, including the installation of a UL-300 fire suppression system in 2020 and the most recent building violations from September 2023 regarding gas utility shutoff tools and compliance affidavits that remain active. The property has experienced multiple renovation phases, with substantial work completed between 2013-2019 involving unit remodels, including kitchen and bathroom updates, window replacements, and restaurant-related improvements.

The building has a documented history of safety and maintenance issues, particularly in 2023 with multiple fire safety violations regarding blocked exits and extinguishers, though these were subsequently abated. Historical problems include past roof leaks affecting both commercial and residential spaces (2000), and various complaints between 2013-2014 regarding mold, plumbing issues, and unauthorized construction work. The property has also had some site-specific challenges, as evidenced by multiple 311 calls in late 2024 and early 2025 related to garbage and debris around the building's perimeter. While many previous violations and complaints have been addressed, the active 2023 compliance issues represent the most current concerns requiring attention. The building's permit history shows regular investment in maintenance and improvements, with the most recent significant work being fire safety-related updates in 2020.

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

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Risk rating

How 3305-3321 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
5th percentile

Out of 2380 buildings in this neighborhood, 2261 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
17%
No DBI
violation
83%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

12-Month severity forecast
No violation 8.8%
Moderate concern 80.4%
Severe concern 10.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

3305-3321 20Th St apartment reviews

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The story over time

3305-3321 20Th St event timeline

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

2026
311 Request May 13
Street cleaning
defaced ok
Building PermitApr 14
Recommencement and completion of work approved under pa# 201905301947 & 201908128505.

See all 26 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3305-3321 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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