Free SF apartment background check

1330-1336 Guerrero St

Noe Valley, SF 94110 6533007 6 units · 3 fl · 1900

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood

Compared to a typical building in Noe Valley

At or below average

avg 1.2

1

FewerMore

This building has 1 novs (7y), at or below the Noe Valley average of 1.2.

12-Month Maintenance Forecast

62%

(risk — lower is better)

Some concerns

Estimated probability of a DBI violation or complaint in the next 12 months.

7-YEAR TREND Violations + complaints / yr

'20

'21

'22

'23

'24

'25

'26

'27*

*Next year, projected from recent activity and predicted risk.

7-Year Historical Counts

1

NOVs (7y)

4

DBI Complaints (7y)

20

311 Calls (7y)

0

Fire Incidents

0

2nd NOVs

0

Dir. Hearings

0

City Atty

12

Permits (7y)

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Rent & eviction protection

Is 1330-1336 Guerrero 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 1900

2 or more units

6 units

Property type

Multi-Family Residential

Zoning

RH3

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

Units	6
Floors	3
Year built	1900
Total area	9,000 sq ft
Property type	Multi-Family Residential
Tax status	None
Blocklot	6533007

Ownership

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

Owner name

Ham Mi-Ryung

Mailing address

P.o. Box 811774 Los Angeles CA 90081

Last sale

053007

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.

1334 Guerrero St, San Francisco, CA 94110

1330 B Guerrero St, San Francisco, CA 94110

1332 Guerrero St, San Francisco, CA 94110

1330 A Guerrero St, San Francisco, CA 94110

1330 Guerrero St, San Francisco, CA 94110

1336 Guerrero St, San Francisco, CA 94110

1336 B Guerrero St, San Francisco, CA 94110

1336 A Guerrero St, San Francisco, CA 94110

Augrented Insights

Initial analysis

The 6-unit, 3-story multi-family residential building at 1330-1336 Guerrero Street in Noe Valley, owned by Ham Mi-ryung, has undergone significant maintenance and upgrades since its construction in 1900, most notably recent electrical and plumbing work. As of August 2024, major electrical upgrades are underway, including the replacement of outdated wiring, installation of new circuits, and updating electrical infrastructure. The building has a history of heating system maintenance issues, with multiple complaints about inadequate heat between 2019-2020, though many heating systems were upgraded and replaced between 2007-2009. Safety concerns have been addressed through various maintenance work, including the recent bathroom remodel in 2024 and the completion of heating system improvements.

The building's history shows consistent attention to infrastructure improvements, with significant electrical, plumbing, and heating system upgrades completed over the years. Soft-story retrofit work has been completed, and the building maintains active compliance with safety requirements. Several building complaints and violations were recorded between 2001-2017, primarily relating to heating systems, fire safety equipment, and maintenance issues, though these were typically resolved promptly. A notable incident occurred in 2007 involving an electrical fire that affected all circuits, but this was addressed through subsequent upgrades and inspections. Recent maintenance patterns suggest ongoing improvements to building systems, with particular attention to electrical infrastructure and heating systems. The building has also experienced various exterior maintenance issues over the years, including concerns about a collapsing retaining wall in 2020 and temporary egress obstruction in 2022, though these were ultimately resolved.

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

Risk rating

How 1330-1336 Guerrero 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

6th percentile

Out of 1879 buildings in this neighborhood, 1766 are predicted to be safer.

RiskiestSafest

Predicted 12-month outcome

38%

No DBI
violation

62%

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.

Building size

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

DBI tenant complaints (past 7 years)

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

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

12-Month severity forecast

No violation 22.4%

Moderate concern 62.0%

Severe concern 15.6%

Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.

Apartment reviews

1330-1336 Guerrero St apartment reviews

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The story over time

1330-1336 Guerrero St event timeline

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

2026

Plumbing Permit Apr 01

Add sink, toilet, shower pan (1) to new 3/4 bathroom.

Issued

Electrical PermitApr 01

Add dedicated gfci, replace light, wire ef - new 3/4 bathroom.

See all 18 events

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

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Every record we have

Full data for 1330-1336 Guerrero St apartments

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

What this is

Permits issued by the SF Department of Building Inspection for new construction, alterations, and repairs. Includes estimated cost and current permit status.

Permit #	Description	Cost	Filed	Status
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What this is

Plumbing permit applications filed with the SF Department of Building Inspection. Covers plumbing installation, repair, and replacement work.

Permit #	Description	Filed	Status
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What this is

Electrical permit applications filed with the SF Department of Building Inspection. Covers electrical wiring, panel upgrades, and related work.

Permit #	Description	Filed	Status
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What this is

Notices of Violation issued by the SF Department of Building Inspection for code violations. Unresolved notices can escalate to legal action.

Date Filed	Complaint #	Description	Item	Category	Status
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What this is

Complaints filed with the SF Department of Building Inspection about code violations. Tracks the complaint lifecycle from filing through abatement or referral.

Complaint #	Date Filed	Date Abated	Division	Status	Description
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What this is

Planning Department project entitlements — discretionary review, conditional use, variances, and environmental review for this parcel.

Address	Opened	Closed	Status	Description	Applicant
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What this is

Planning Department administrative and compliance records that are not full project entitlements — pre-application meetings, code violations, and referrals.

Address	Opened	Closed	Status	Description	Applicant
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What this is

SFFD fire incidents geo-joined to this parcel. Covers structure fires, alarms, and emergency responses with injury and fatality counts.

Date	Situation	Civilian Injuries	Civilian Fatalities
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What this is

Fire code violations issued by the SFFD. Tracks corrective actions required and resolution status for fire safety code enforcement.

Violation Date	Description	Corrective Action	Status	Close Date
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What this is

Fire code complaints received by the SF Fire Department geo-joined to this parcel. Includes complaint type, disposition, and outcome.

Received	Description	Disposition Date	Disposition
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What this is

SF 311 service requests geo-joined to this parcel. Includes maintenance complaints, street/sidewalk issues, and quality-of-life requests.

Opened	Type	Agency	Category	Details	Status
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What this is

Buildings subject to SF's mandatory soft-story seismic retrofit program. Unreinforced multi-story wood-frame buildings must meet compliance tiers.

Tier	Status
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What this is

Tenant buyout (Ellis Act pre-cursor) agreements recorded with the SF Rent Board. Tracks amounts paid to tenants to vacate rent-controlled units.

Disclosure Date	Buyout Date	Amount	Tenants
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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning