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425-427 Connecticut St

Potrero Hill, SF 94107 4067024 2 units · 3 fl · 1987

A handful of records on file over the last seven years, and our model sees a moderate chance of more 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 Potrero Hill — not a forecast
At or below average
avg 1.1
0
FewerMore

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

Rent & eviction protection

Is 425-427 Connecticut 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 1987
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

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 1987
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
May be covered by AB 1482. The building is old enough for the statewide rent cap (5% + regional CPI, capped at 10% per year) and just-cause protection after 12 months of tenancy.

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
Units2
Floors3
Year built1987
Total area4,782 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot4067024
Ownership

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

Mailing address
Thompson Eleanor Lorraine,t 50 Magnolia 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.

425 Connecticut St, San Francisco, CA 94107
427 Connecticut St, San Francisco, CA 94107
Augrented Insights
Initial analysis

The 425-427 Connecticut Street property in Potrero Hill is a 3-story, 2-unit multi-family residential building constructed in 1987. The building's maintenance history shows several significant structural and safety improvements, including the installation of a fire sprinkler system in 1985, underpinning work in 1994, and a complete sewer house trap and drain pipe replacement in 2017. Recent maintenance includes repairs to dry rot on the back porch/deck in 2013. The building has experienced three housing inspection complaints regarding possible illegal units between 1994 and 1999, all of which were resolved, though documentation shows cancelled permits in 1990 and 1993 related to legalizing ground floor rooms.

The property has undergone various improvements over the years, including window replacements (2003), roof work (1991), and membrane leakage repairs (1996). Recent street-level issues documented through 311 calls primarily relate to external matters such as street cleaning, debris removal, and sidewalk maintenance rather than building-specific concerns. The most recent building-related work was the 2017 plumbing upgrade, suggesting no major building systems require immediate attention. The property appears to be properly classified as a two-unit building, based on the resolution of previous illegal unit complaints and the completion of necessary permits, though there have been historically documented concerns about unauthorized modifications.

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

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Risk rating

How 425-427 Connecticut 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
34thpercentile

Out of 726 buildings in this neighborhood, 479 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
67%
No DBI
violation
33%
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.

NOV rate, owner's portfolio

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

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Director's hearing rate, owner's portfolio

Per-building rate of director's hearings across the owner's portfolio.

12-Month risk forecast
Moderate failure risk 33%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

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On the map

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Buildings nearby
8 found
The story over time

425-427 Connecticut St event timeline

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

2025
DBI Complaint Jun 17
Scaffolding at 427 connecticut st dangerously hanging over stairway at 421 connecticut st. already caused injury and blocking access for disabled person.
Building Inspection Division

See all 1 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 425-427 Connecticut St apartments

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

Side by side

How 425-427 Connecticut St compares to the neighborhood

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