Free SF apartment background check

646 Ellis St

Tenderloin, SF 94109 0321015 10 units · 2 fl · 1908

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
24
FewerMore

This building has 24 novs (7y), above the Tenderloin average of 12.0.

Rent & eviction protection

Is 646 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 1908
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1908
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units10
Floors2
Year built1908
Total area7,174 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0321015
Ownership

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

Mailing address
948 Mission St San Francisco CA 94103
Last sale
091919

Landlord portfolio

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

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Augrented Insights
Initial analysis

646 Ellis Street is a two-story, 10-unit multi-family residential building constructed in 1908, currently operated by 646 Ellis Street LLC. The property has experienced significant maintenance and safety issues in recent months, with multiple active housing code violations filed between August 2024 and October 2024. These violations include serious concerns such as no hot water, inadequate heating, plumbing problems causing basement spills, damaged ceilings, rodent infestation, lead paint hazards, and security issues with exterior doors. The building's systems and infrastructure also show alarming deterioration, with complaints about garbage service outages, flooding, and structural problems. Historical records indicate some past efforts to maintain safety systems, including firefighter sprinkler installation in 2007, a seismic retrofit in 2000, and various fire safety inspections, though there have been repeated fire code violations over the years related to sprinkler systems, blocked exits, and equipment maintenance. Recent complaints about building systems include a dysfunctional hot water system and drainage issues, with units reported to have multiple maintenance problems including water intrusion, mold, and plumbing concerns. The property has a documented history of fire safety violations, with the most recent violation for sprinkler service dated March 2024 and a previous violation for non-conforming door hardware from May 2020, both of which were eventually abated.

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

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Risk rating

How 646 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
72th percentile

Out of 172 buildings in this neighborhood, 48 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
21%
No DBI
violation
79%
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.

Number of units

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

Building size

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

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

12-Month severity forecast
No violation 11.7%
Moderate concern 49.5%
Severe concern 38.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

646 Ellis St apartment reviews

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On the map

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The story over time

646 Ellis St event timeline

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

2026
311 Request Feb 28
Garbage and debris
mattress

See all 18 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 646 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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