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1840-1842 Jefferson St

Marina, SF 94123 0912001A 21 units · 3 fl · 1927

A handful of records on file over the last seven years, and our model predicts a high 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.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

Rent & eviction protection

Is 1840-1842 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
21 units
Property type
Multi-Family Residential
Zoning
RM3
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
Units21
Floors3
Year built1927
Total area25,920 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0912001A
Ownership

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

Owner name
Mailing address
Alioto Joanne Succ Ttee 3440 Broderick St San Francisco CA 94123
Last sale

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.

1842 Jefferson St, San Francisco, CA 94123
1840 Jefferson St, San Francisco, CA 94123
Augrented Insights
Initial analysis

The 21-unit, three-story multi-family residential building at 1840-1842 Jefferson St in the Marina neighborhood, built in 1927 and currently under Survivor's Trust ownership, has undergone significant renovations in recent years. Between 2020 and 2024, ten units (101, 103, 104, 106, 204, 205, 206, and 305) have received comprehensive kitchen and bathroom remodels, including cabinet, sink, faucet, tile, and electrical work, with costs ranging from $18,000 to $60,000 per unit. A new hot water boiler was installed in June 2023, replacing the old unit with serial number 9090926 following a 2015 violation for improper permit status. The building has also experienced several fire safety concerns, with open violations for sleeping area requirements as of October 2024, though most previous fire-related issues from 2018-2023 have been marked as corrected or determined to have no merit.

Recent maintenance and operational activities include multiple plumbing and electrical upgrades, with the most recent work completed in Unit 306 in July 2024. Historical records show regular inspection activity, including routine housing inspections and responses to various complaints. Notable past violations from 2007 included issues with gas shutoff tools and instructional diagrams, though these were resolved by April 2007. There was one significant complaint in 2019 regarding unauthorized remodeling work in Unit 205 and six other units, which was addressed by June 2021. The property has generated several recent 311 calls (2024) primarily related to parking and street cleaning issues, with notably fewer internal building complaints in recent years. The building's documented history shows ongoing maintenance and upgrading of individual units, though recent open violations related to sleeping area requirements warrant attention, pending their resolution.

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

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Risk rating

How 1840-1842 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
4thpercentile

Out of 988 buildings in this neighborhood, 948 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
31%
No DBI
violation
69%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

12-Month risk forecast
High failure risk 69%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1840-1842 Jefferson St apartment reviews

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The story over time

1840-1842 Jefferson St event timeline

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

2024
Fire Complaint Oct 28
Sleeping Area Requirement
Violation Issued
Building PermitJul 10
Unit 306: 1) kitchen remodel replace cabinet, switch, sink, faucet and tiles. inkind

See all 19 events

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

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Every record we have

Full data for 1840-1842 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 1840-1842 Jefferson St compares to the neighborhood

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

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