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4084-4086 18Th St

Eureka Valley/Dolores Heights, SF 94114 3582056 3 units · 3 fl · 1906

This building has significantly more problems than most nearby buildings. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Eureka Valley/Dolores Heights
At or below average
avg 1.3
0
FewerMore

This building has 0 novs (7y), at or below the Eureka Valley/Dolores Heights average of 1.3.

Rent & eviction protection

Is 4084-4086 18Th 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 1906
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
CASTRO
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.

Building characteristics
Units3
Floors3
Year built1906
Total area3,975 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3582056
Ownership

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

Owner name
Rickenbacher Matz Llc
Mailing address
Cournale & Co 4630 Geary Blvd San Francisco CA 94118
Last sale
000000

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

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

4084 18th St, San Francisco, CA 94114
4086 18th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The three-story mixed-use building at 4084-4086 18th Street, owned by Rickenbacher Matz LLC, was built in 1906 and contains three residential units plus commercial space. The property has a significant history of fire-related incidents and violations, most notably a fire in 2011 that caused substantial damage to a beauty salon, prompting extensive repairs including the installation of a new fire sprinkler system and related safety improvements costing over $25,000. More recently, in 2023, there were two shared spaces complaints regarding the outdoor area and one alarm system issue, though all were resolved or found to have no merit. The building has undergone several important maintenance and safety upgrades, including a sewer line repair in 2015, replacement of dryrot base plates in 2013, and the installation of an iron gate in 2017 to address security concerns about loitering.

The property has faced multiple compliance challenges over the years, including several building complaints in 2009-2010 regarding unpermitted bathroom construction, unsafe conditions on the back patio, and disabled access violations. There have been recurring concerns about proper permits for outdoor seating areas, with a significant complaint in 2011 regarding unauthorized construction of a roof structure with electrical and gas lines. In 2022, a complaint was filed regarding plumbing issues, dilapidated structure, and disabled access restrooms, though this is listed as not active. The property has also experienced various infrastructure improvements, including gas line replacement, plumbing upgrades, and electrical work, as evidenced by numerous building permits from 2009 to 2017. Recent 311 calls from late 2024 indicate ongoing issues with garbage and debris on the property, including reports of human waste or urine, though these are street-related rather than building-specific complaints.

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

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Risk rating

How 4084-4086 18Th 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
14th percentile

Out of 1278 buildings in this neighborhood, 1099 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
49%
No DBI
violation
51%
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.

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

Permit rate, owner's portfolio

Per-building permit rate across the owner's portfolio.

12-Month severity forecast
No violation 44.1%
Moderate concern 47.2%
Severe concern 8.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

4084-4086 18Th St event timeline

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

2026
DBI Complaint Mar 09
Date last observed: 01-jan-26; time last observed: 1:00; identity of person performing the work: the mix bar; exact location: main bldg; building type: commercial/business fire safety/fire escape; disabled acc: entrance; disabled acc: stairs/ramps; disabled acc: path of travel;
Disabled Access Division
311 RequestMar 01
Other

See all 13 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4084-4086 18Th 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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