Free SF apartment background check

503-509 Cabrillo St

Inner Richmond, SF 94118 1649001 4 units · 2 fl · 1922

This building has significantly more problems than most nearby buildings. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Inner Richmond
At or below average
avg 0.9
0
FewerMore

This building has 0 novs (7y), at or below the Inner Richmond average of 0.9.

Rent & eviction protection

Is 503-509 Cabrillo 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 1922
2 or more units
4 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
Units4
Floors2
Year built1922
Total area4,210 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1649001
Ownership

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

Owner name
Sumoji Properties Llc
Mailing address
Stapleton Sam Manager 15466 Los Gatos Blvd #109-1 Los Gatos CA 95032
Last sale
050417

Landlord portfolio

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

Unlock complete report
Multiple entrances & addresses

Included addresses

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

507 Cabrillo St, San Francisco, CA 94118
509 Cabrillo St, San Francisco, CA 94118
503 Cabrillo St, San Francisco, CA 94118
505 Cabrillo St, San Francisco, CA 94118
Augrented Insights
Initial analysis

The two-story, four-unit apartment building at 503-509 Cabrillo St, built in 1922 and currently owned by Sumoji Properties LLC, has undergone significant renovations and faced several maintenance challenges in recent years. In 2014-2015, the property underwent substantial improvements including the installation of 47 new wooden windows, comprehensive kitchen remodels in multiple units, and the addition of new bathrooms in units 503, 505, and 509, with associated plumbing and electrical upgrades costing over $100,000 combined. However, there have been concerning maintenance issues, particularly regarding heating systems, with a complaint filed in February 2023 about inadequate heat since July 2022, along with reports of hazardous electrical outlets and a possible gas leak. The building has experienced some construction-related incidents, including a complaint about an exposed hole in a bathroom ceiling in December 2014, and there were multiple reports of unauthorized work being performed without proper permits during the same period. Recent exterior maintenance issues have been noted, with several 311 calls in 2023-2024 regarding street cleaning, graffiti, and debris. The building's recent history also includes a fire incident related to smoke or odor removal, though with no civilian injuries reported. While the property has received substantial upgrades, the recurring maintenance issues, particularly related to heating and electrical systems, warrant attention.

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

Free account unlocks the full analysis — plus 2× more records across all data categories and the complete landlord portfolio.
Risk rating

How 503-509 Cabrillo 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
13th percentile

Out of 1723 buildings in this neighborhood, 1499 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
59%
No DBI
violation
41%
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 age

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

12-Month severity forecast
No violation 51.1%
Moderate concern 31.8%
Severe concern 17.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

503-509 Cabrillo St apartment reviews

Real experiences from people who have lived here. Share yours to help other renters decide.

Share your experience — Help other renters by leaving an honest apartment review

Loading reviews…

On the map

Compare nearby alternatives

This building and nearby alternatives, color-coded by risk level. Click any marker to explore.

Buildings nearby
Loading…
The story over time

503-509 Cabrillo St event timeline

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

2026
311 Request Jun 01
Other illegal parking
Parking Enforcement
311 RequestFeb 01
Garbage and debris

See all 4 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

Unlock complete timeline
Every record we have

Full data for 503-509 Cabrillo St apartments

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

Still apartment hunting in SF?

Look up the next apartment before you sign

Search any SF address free — no account needed to see the risk rating.

Simple pricing

Get the complete picture

Every plan unlocks the complete report: all 13 SF datasets, full history, landlord portfolio, and PDF & Excel exports.

Report Bundle

For the buildings you're deciding on right now

$10 one-time

~$3.33 per building. No subscription ever. Each credit unlocks one building's premium report for 30 days.

  • 3 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 3 Reports — $10

Apartment Hunter

For a wide search across many buildings

$39 one-time

30 reports — ~$1.30 each. No subscription ever.

  • 30 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 30 Reports — $39

Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

Watch 503-509 Cabrillo St
Get alerted the moment a new violation or complaint is filed.