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3553-3555 20Th St

Inner Mission, SF 94110 3609080 2 units · 2 fl · 1900

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 3553-3555 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 1900
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
NC1
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 built1900
Total area2,028 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3609080
Ownership

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

Owner name
Lagios Demetre & Wells Elai
Mailing address
3555 20th St San Francisco CA 94110
Last sale
020703

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.

3555 20th St, San Francisco, CA 94110
3553 20th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The property at 3553-3555 20th Street is a two-unit residential building constructed in 1900, currently owned by Lagios Demetre & Wells Elai, located in San Francisco's Inner Mission neighborhood. The building underwent significant renovations and compliance updates in 2019, including a substantial $75,000 2-unit condo conversion and various structural improvements to legalize a rear addition and replace a rear stairway. These improvements involved working on the foundation, adding a laundry room, and installing a 1-hour fire wall at the property line, with associated electrical and plumbing work totaling over $200,000. Multiple street space permits were issued throughout 2019-2020, indicating ongoing exterior work.

More recent history shows regular maintenance issues typical of urban properties, including several cases of sidewalk cleaning required for loose garbage between 2022-2024, and some graffiti incidents. There is currently one open issue from July 2024 regarding a damaged tree near the property. The building's permit history also includes earlier infrastructure work, such as a sewer line replacement in 2009 and gas line extensions in 2008, suggesting proper attention to essential systems. The comprehensive 2019 renovation work appears to have brought the building up to modern standards, with all associated permits marked as complete, while the recent 311 calls primarily relate to exterior maintenance and public space issues rather than building-specific concerns.

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

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Risk rating

How 3553-3555 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
97th percentile

Out of 2380 buildings in this neighborhood, 71 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
90%
No DBI
violation
10%
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 age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

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.

12-Month severity forecast
No violation 83.8%
Moderate concern 12.0%
Severe concern 4.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

3553-3555 20Th St event timeline

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

2026
311 Request Jun 18
Parking on sidewalk
Parking Enforcement
311 RequestJan 15
Not offensive

See all 12 events

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

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Every record we have

Full data for 3553-3555 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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