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1837-1841 Jefferson St

Marina, SF 94123 0913034 3 units · 3 fl · 1927

A handful of records on file over the last seven years, and our model puts this building at a low risk of further maintenance problems in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Marina — not a forecast
At or below average
avg 1.1
0
FewerMore

This building has 0 novs (7y), at or below the Marina average of 1.1.

Rent & eviction protection

Is 1837-1841 Jefferson 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 1927
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RH3
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 1927
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
Units3
Floors3
Year built1927
Total area3,848 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0913034
Ownership

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

Mailing address
Debra W Simons 560 Oak Street Mountain View CA 94041
Last sale
July 23, 2009

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

1839 Jefferson St, San Francisco, CA 94123
1841 Jefferson St, San Francisco, CA 94123
1837 Jefferson St, San Francisco, CA 94123
Augrented Insights
Initial analysis

The three-unit residential building at 1837-1841 Jefferson Street in the Marina neighborhood, owned by Jem Simons Fmly Llc, has undergone significant transformations since its construction in 1927, with the most notable events occurring around a serious fire incident in 2009. The property experienced substantial damage from a fire in December 2009, affecting the west lightwell and most of the roof, which resulted in water damage throughout the building. This incident led to extensive repairs, including a complete building remodel and rewire in 2011, the installation of a new fire sprinkler system throughout the building with dedicated copper fire service, and the addition of solar panels (42 roof-mounted PV modules, 8.8kW total rating). The fire safety improvements continued with recent activity, including the installation of a new sprinkler monitoring system in October 2024, with associated electrical work currently underway.

The building's history also includes some concerning events, most notably a complaint in February 2022 regarding unauthorized and unsafe exterior construction work, including reports of debris falling from the structure. While this complaint has been marked as "Not Active," it raised safety concerns during its occurrence. The property underwent various inspections and permit processes between 2010 and 2014 to address the fire damage and complete necessary repairs, with all building violations officially abated by October 2014. Routine housing inspections occurred in 2000, and the building has experienced multiple parking-related incidents in the surrounding area, as evidenced by 311 calls regarding blocked driveways and sidewalk parking between 2018 and 2024, although these are unrelated to the building's structural or safety conditions.

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

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Risk rating

How 1837-1841 Jefferson 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
42ndpercentile

Out of 988 buildings in this neighborhood, 573 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
74%
No DBI
violation
26%
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.

Building size

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

DBI complaints, owner's portfolio

Complaints across all of this owner's buildings over 7 years.

12-Month risk forecast
Low failure risk 26%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1837-1841 Jefferson St apartment reviews

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The story over time

1837-1841 Jefferson St event timeline

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

2024
Electrical Permit Oct 14
Online electrical permit: 60 of buildings of 6 dwelling units or less. installation of a sprinkler monitoring system.
Complete
Building PermitOct 10
Installation of a new sprinkler monitoring system. ref sprinkler #202407126357.

See all 5 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1837-1841 Jefferson St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

Side by side

How 1837-1841 Jefferson St compares to the neighborhood

This building against comparable properties in Marina. Toggle filters to narrow the peer group.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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