Free SF apartment background check

6 Sumner St

South of Market, SF 94103 3730041 2 units · 2 fl · 1907

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 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.

Rent & eviction protection

Is 6 Sumner 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 1907
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RED
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 built1907
Total area2,460 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3730041
Ownership

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

Owner name
Tepper Jesse & Painjing Ruj
Mailing address
6 Sumner St San Francisco CA 94103
Last sale
011911

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 6 Sumner Street is a two-unit, two-story multi-family residential building located in San Francisco's South of Market neighborhood. Built in 1907 and classified as a Flats & Duplex, the building is currently owned by Jesse Tepper and Ruj Painjing. The most significant recent event was a tenant buyout on August 21, 2024, involving one tenant for an amount of $25,000. The building's maintenance record shows one major improvement from 2008 when six wood front windows and two vinyl rear windows were installed, featuring double-pane construction with a U-factor of 0.30, though this work was completed 15 years ago.

The property has experienced multiple sewer-related issues in 2023, with three separate incidents reported between March and June 2023, including flooding on the property, sewage backup from the sewer vent, and odors from the side sewer vent. More recently, from 2023 to 2024, there have been recurring sanitation challenges in the immediate neighborhood, including incidents of human waste, debris, and abandoned appliances on the street, though most of these cases were resolved without requiring additional work. The most recent calls, in October 2024, involved reports of garbage and debris, including human waste or urine. While these external issues don't directly impact the building's structural integrity, they do indicate ongoing neighborhood sanitation challenges. The property's maintenance and response records show that reported issues, while frequent, have generally been addressed and closed out through appropriate city services.

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

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Risk rating

How 6 Sumner 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
82th percentile

Out of 430 buildings in this neighborhood, 77 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
83%
No DBI
violation
17%
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 (ZIP code)

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

Building age

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

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 74.2%
Moderate concern 17.4%
Severe concern 8.4%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

6 Sumner St apartment reviews

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The story over time

6 Sumner St event timeline

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

2026
Building Permit May 27
In-kind repair at (e) deck framing due to dry rot, less than 50% of (e) deck framing to be replaced, remove & replace (e) slider doors (2) to replace dry rot framing, not visible from street.
$10,000 · Issued
Building PermitMar 05
Revison to pa# 202602045221: replace exterior siding along south wall. existing shingles to be replaced w/ hardie artisan. install (2) new fiberglass doors in (e) location. modify (e) rafter tails.

See all 12 events

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

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Every record we have

Full data for 6 Sumner 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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