Free SF apartment background check

27-37 Isis St

South of Market, SF 94103 3522044 9 units · 3 fl · 1906

This building has more problems than most buildings in this neighborhood. 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 South of Market

At or below average

avg 3.3

0

FewerMore

This building has 0 novs (7y), at or below the South of Market average of 3.3.

12-Month Maintenance Forecast

70%

(risk — lower is better)

Notable issues

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

0

NOVs (7y)

0

DBI Complaints (7y)

387

311 Calls (7y)

1

Fire Incidents

0

2nd NOVs

0

Dir. Hearings

0

City Atty

1

Permits (7y)

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Rent & eviction protection

Is 27-37 Isis 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

9 units

Property type

Multi-Family Residential

Zoning

SLR

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	9
Floors	3
Year built	1906
Total area	5,436 sq ft
Property type	Multi-Family Residential
Tax status	None
Blocklot	3522044

Ownership

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

Owner name

Willett Dolores Gst Trust

Mailing address

Dolores Willett Po Box 591540 San Francisco CA 94159

Last sale

042199

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.

35 Isis St, San Francisco, CA 94103

33 Isis St, San Francisco, CA 94103

37 A Isis St, San Francisco, CA 94103

27 Isis St, San Francisco, CA 94103

31 Isis St, San Francisco, CA 94103

29 Isis St, San Francisco, CA 94103

Augrented Insights

Initial analysis

The three-story, nine-unit multi-family residential building at 27-37 Isis Street, owned by the Willett Dolores Gst Trust, was constructed in 1906 and has undergone several significant maintenance and improvement projects over its lifetime. The most recent comprehensive renovation occurred in 2011, when both the kitchen and bathroom were remodeled, including the installation of new fixtures, cabinets, and countertops, with associated plumbing and electrical work totaling approximately $31,000. The building has experienced recurring issues with deck and stair maintenance, with repairs documented in 2009 (rear deck), 2008 (back stairs), 2005 (front stairs), 2000 (two flights of stairs), and 1986 (bringing the building up to code). These repairs suggest ongoing attention to structural safety elements, particularly regarding access points.

Recent activity around the property has primarily involved external maintenance and urban cleanliness issues, as evidenced by multiple 311 calls in late 2024 regarding garbage, debris, and graffiti on adjacent properties. A notable cluster of service requests in December 2024 involved reports of human waste or urine on streets/sidewalks near the property. The building's safety record shows several fire-related inspections and complaints between 2008 and 2022, including issues with alarm systems, blocked exits, and street numbering, though most were either corrected immediately or determined to have no merit. A 1990 reroofing project and various siding and decking repairs indicate regular upkeep of building systems, though the presence of multiple fire system violations in adjacent buildings suggests some historical compliance challenges in the immediate area. The most recent building permit activity from 2019 was related to street space, though the minimal associated cost suggests this was likely a minor administrative matter.

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

Risk rating

How 27-37 Isis 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

22th percentile

Out of 430 buildings in this neighborhood, 335 are predicted to be safer.

RiskiestSafest

Predicted 12-month outcome

30%

No DBI
violation

70%

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.

Building size

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

Neighborhood (ZIP code)

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

12-Month severity forecast

No violation 12.8%

Moderate concern 29.5%

Severe concern 57.8%

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

Apartment reviews

27-37 Isis St apartment reviews

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The story over time

27-37 Isis St event timeline

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

2025

Fire Incident Oct 13 Serious

740 Unintentional transmission of alarm, other

Injuries: 0 · Fatalities: 0

See all 8 events

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

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Every record we have

Full data for 27-37 Isis 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