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1870 Jefferson St

Marina, SF 94123 0912002B 18 units · 3 fl · 1927

Nothing on record for this building in the last seven years. Our model still sees a moderate chance of maintenance problems in the next 12 months, from the owner's wider portfolio and the surrounding area rather than from anything recorded here. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

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 1870 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
18 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
Units18
Floors3
Year built1927
Total area12,150 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0912002B
Ownership

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

Mailing address
24602 Voorhees Dr Los Altos Hills CA 94022
Last sale

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 1870 Jefferson Street building is a three-story, 18-unit multi-family residential property located in the Marina neighborhood, built in 1927 and currently owned by 1870 Jefferson Street LLC. The building has undergone several significant improvements to enhance safety and modernize systems, most notably completing a seismic retrofit in 2018 (Tier 4, CFC Issued) and upgrading fire safety systems in recent years, including the installation of low frequency sounders in 2021-2022 to meet current fire code requirements. The building has experienced recurring water-related issues, with multiple plumbing problems documented between 2016-2017 affecting various units and common areas, though many of these have been addressed through proper permits and repairs. Historical building violations from 2001-2010 were resolved, including fire safety and maintenance issues, and while there is currently one active complaint from 2016 regarding work without permit, it remains to be fully resolved.

The property's maintenance history shows attention to essential systems, including the installation of a new steam boiler (2014), water service replacement (2012), and various unit-specific renovations such as window replacements (2011) and kitchen remodels (2016). Several historical problems have been documented through tenant complaints, including water leaks, window and plumbing issues, and interior surface concerns, though most have been addressed through appropriate repair permits. Recent years show regular responses to maintenance needs, particularly in 2021-2022, with multiple resolved service requests through Recology and other city services. The building's documentation reveals a pattern of ongoing maintenance and upgrades to meet current building codes and safety requirements, though some historical issues related to water damage and fire safety have required repeated attention.

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

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Risk rating

How 1870 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
15thpercentile

Out of 988 buildings in this neighborhood, 840 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
45%
No DBI
violation
55%
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
Moderate failure risk 55%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1870 Jefferson St apartment reviews

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The story over time

1870 Jefferson St event timeline

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

2025
Plumbing Permit Feb 03
Work category: 11p; removal and replacement of boiler make up backflow device serial # w233366
Complete
Tenant BuyoutJan 16
Tenant buyout · $14,000

See all 6 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1870 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 1870 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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