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4226-4228 18Th St

Eureka Valley/Dolores Heights, SF 94114 2648018 2 units · 2 fl · 1904

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

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 4226-4228 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 1904
2 or more units
2 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
Units2
Floors2
Year built1904
Total area2,650 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2648018
Ownership

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

Owner name
Giannini Living Trust The
Mailing address
Clara A Giannini 786 Ulloa St San Francisco CA 94127
Last sale
060795

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.

4228 18th St, San Francisco, CA 94114
4226 18th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The property at 4226-4228 18th Street is a two-unit, two-story multi-family residential building constructed in 1904, currently owned by the Giannini Living Trust. The building underwent significant maintenance and repair work in 2011 when multiple violations were documented and subsequently resolved within one month, including issues with a malfunctioning dishwasher, floor covering, front entry door, back step handrails, security requirements, and wooden stairs. Additionally, there were two separate fire safety incidents noted: one in 2019 involving blocked exits (which received a violation notice) and another in 2011 that was corrected the same day. A reroofing project was completed in 2000 at a cost of $11,500.

The building's recent history (2022-2025) shows ongoing maintenance of the surrounding area, with multiple 311 calls primarily related to street cleaning, illegal postings, and other urban maintenance issues. These calls include reports of medical waste (June 2023), graffiti (November 2022), and various general service requests to the Department of Public Works. There have been no recent building violations, and the most recent documented permit activity was from the 2000 reroofing project, suggesting either minimal recent construction activity or successful maintenance of building codes and requirements.

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

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Risk rating

How 4226-4228 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
58th percentile

Out of 1278 buildings in this neighborhood, 537 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
79%
No DBI
violation
21%
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.

Neighborhood location

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

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 69.3%
Moderate concern 16.9%
Severe concern 13.8%
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

4226-4228 18Th St event timeline

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

2025
311 Request Mar 28
Garbage and debris
refrigerator appliance

See all 3 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4226-4228 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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