Free SF apartment background check

3606-3612 18Th St

Mission Dolores, SF 94110 3578015 6 units · 2 fl · 1924

This building has significantly more problems than most nearby buildings. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Mission Dolores
At or below average
avg 2.9
1
FewerMore

This building has 1 novs (7y), at or below the Mission Dolores average of 2.9.

Rent & eviction protection

Is 3606-3612 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 1924
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
NC1
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
Units6
Floors2
Year built1924
Total area5,940 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3578015
Ownership

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

Owner name
T & A Drolapas & Sons L P
Mailing address
611 Santa Florita Av Millbrae CA 94030
Last sale
121119

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.

3612 18th St, San Francisco, CA 94110
3606 18th St, San Francisco, CA 94110
598 Guerrero St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The property at 3606-3612 18th Street, also known as 598 Guerrero Street, is a 2-story, 6-unit multi-family residential building constructed in 1924 and currently owned by T & A Drolapas & Sons L P. The building's recent history has been dominated by commercial space improvements, particularly related to the restaurant component, with significant renovations occurring between 2019-2021 including kitchen upgrades, ADA improvements, and electrical/plumbing work totaling over $120,000. These improvements followed several compliance issues from 2001-2007, during which the property faced multiple violations including water damage repair needs, fire safety concerns, and interior surface maintenance requirements, all of which were abated by January 2007. The building underwent routine inspections during this period that revealed various safety and maintenance issues, including fire escape ladder concerns and fire extinguisher maintenance needs, though all these violations were eventually resolved.

More recent developments include a 2022 anonymous complaint about potential unauthorized construction, a 2019 complaint regarding sidewalk safety concerns with a restaurant door, and several 311 calls from late 2024 primarily related to street maintenance issues such as graffiti and illegal parking, none of which appear to indicate urgent building safety concerns. The property has maintained active compliance with fire safety protocols, experiencing only false alarms (745, 622 codes) in recorded fire incidents. The building's historical permit records show regular maintenance and upgrading of systems, including a 2003 window replacement project and various commercial space modifications, though there have been some expired permits noted in the records. The restaurant portion of the property has maintained its operating status with appropriate zoning and health department approvals, most recently confirmed as suitable for a Type 47 Liquor License.

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

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Risk rating

How 3606-3612 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
10th percentile

Out of 799 buildings in this neighborhood, 719 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
28%
No DBI
violation
72%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

12-Month severity forecast
No violation 28.8%
Moderate concern 56.6%
Severe concern 14.6%
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

3606-3612 18Th St event timeline

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

2026
311 Request Jun 16
Not offensive
pole
311 RequestJun 08
Other illegal parking

See all 14 events

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

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Every record we have

Full data for 3606-3612 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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