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455-457 Ellis St

Tenderloin, SF 94102 0333019 10 units · 3 fl · 1911

This building has a higher-than-average number of open problems nearby. 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 Tenderloin
Above average
avg 12.0
39
FewerMore

This building has 39 novs (7y), above the Tenderloin average of 12.0.

Rent & eviction protection

Is 455-457 Ellis 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 1911
2 or more units
10 units
Property type
Multi-Family Residential
Zoning
RC4
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
Units10
Floors3
Year built1911
Total area5,808 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0333019
Ownership

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

Owner name
S4 Development Llc
Mailing address
4747 Paradise Dr Tiburon CA 94920
Last sale
091919

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.

455 Ellis St, San Francisco, CA 94102
457 Ellis St, San Francisco, CA 94102
Augrented Insights
Initial analysis

The three-story, 10-unit multi-family residential building at 455-457 Ellis Street, managed by S4 Development LLC, has experienced persistent maintenance and safety issues since its construction in 1911. Most recently, the property has faced significant problems with water intrusion and mold, with multiple complaints filed in 2024 (June and August) reporting leaks affecting kitchen, living areas, and ceilings, along with confirmed mold presence. There have been recurring issues with building systems, including a series of fire safety violations from 2022-2024 related to extinguishers, alarm systems, and exit reliability. The building's structural and safety concerns are documented through recent permits (2023) for window replacements and compliance repairs costing $22,000, addressing previous violations from 2022-2023.

Historical records show the building has battled similar maintenance challenges over the years, with notable events including the 2018 cancellation of a $60,000 fire escape replacement project, various plumbing issues (including a 50-foot sewer replacement in 2020), and multiple building violations related to mold, ventilation, and security systems in the early 2000s. Recent 311 calls between 2023-2024 indicate ongoing issues with exterior cleanliness and waste management in the surrounding area. The building's fire safety history includes several false alarms and sprinkler system incidents, though no civilian injuries have been reported. While some violations have been abated, including recent fire safety issues, the recurring nature of plumbing, mold, and fire safety concerns suggests ongoing maintenance challenges within the building.

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

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Risk rating

How 455-457 Ellis 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
52th percentile

Out of 172 buildings in this neighborhood, 83 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
11%
No DBI
violation
89%
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.

NOV rate, owner's portfolio

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

Notices of Violation (past 7 years)

DBI issued Notices of Violation at this address over the last 7 years — a direct record of code enforcement activity.

12-Month severity forecast
No violation 7.4%
Moderate concern 80.0%
Severe concern 12.6%
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

455-457 Ellis St event timeline

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

2026
Fire Complaint Apr 28
Extinguishers
Condition Corrected
DBI ComplaintApr 14
Date last observed: 13-apr-26; floor: backyard c; exact location: main bldg; building type: residence/dwelling dilapidated structure; structural problems; work being done in dangerous manner; ; additional information: next door structure falling in to the back yard and causing damage. the 465 ellix is the dilapidating build, drainpipe fell off in to the457 ellis prroperty;

See all 28 events

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

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Every record we have

Full data for 455-457 Ellis 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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