Free SF apartment background check

101 28Th St

Noe Valley, SF 94131 6615050 6 units · 4 fl · 1926

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
Above average
avg 1.2
11
FewerMore

This building has 11 novs (7y), above the Noe Valley average of 1.2.

Rent & eviction protection

Is 101 28Th 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 1926
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
N/A
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
Floors4
Year built1926
Total area5,199 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6615050
Ownership

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

Owner name
Orbis Tertius Llc
Mailing address
Paulette Ryan 2 Ajax St Larkspur CA 94939
Last sale
111518

Landlord portfolio

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

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Augrented Insights
Initial analysis

101 28th Street in Noe Valley is a 6-unit, 4-story multi-family residential building constructed in 1926, currently owned by Orbis Tertius LLC. The property has undergone several significant improvements and faced multiple compliance issues in recent years. Most notably, the building completed a $90,000 soft-story retrofit in 2017 to enhance seismic safety, achieving Tier 3 status with CFC issued. In 2023, the building experienced a series of fire safety and building maintenance violations, including issues with fire proofing, combustible storage, and various fire safety systems (alarms, extinguishers, electrical systems). These violations were largely addressed by August 2023, with the exception of an alarm system violation issued in November 2023. Earlier in 2023, the building had multiple compliance issues related to weather proofing, smoke/carbon monoxide compliance, and interior painting requirements, including concerns about potential lead paint hazards.

The property's maintenance history shows some attention to structural upkeep, including a cancelled reroofing project in 2012, though this permit is no longer relevant given its age. A building fire incident occurred (date not specified) with no civilian injuries reported. The building has experienced recurring fire safety compliance challenges, particularly in 2006 and more recently in 2023-2024, with violations related to fire escape maintenance, extinguisher requirements, and exit obstructions. While the property has generally addressed most violations when issued, the pattern of repeated fire safety issues suggests ongoing concerns in this area. The building's recent history also shows attention to street-level concerns, with multiple 311 calls between 2023-2025 regarding parking violations, tree maintenance, and street defects, though these are external to the building itself.

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

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Risk rating

How 101 28Th 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
5th percentile

Out of 1879 buildings in this neighborhood, 1785 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
36%
No DBI
violation
64%
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.

Director's hearings (past 7 years)

Director's hearings are escalated enforcement actions for buildings that haven't resolved violations — a serious signal.

12-Month severity forecast
No violation 29.2%
Moderate concern 56.7%
Severe concern 14.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

101 28Th St event timeline

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

2026
311 Request May 31
Parking on sidewalk
Parking Enforcement
311 RequestMay 29
Parking on sidewalk

See all 18 events

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

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Every record we have

Full data for 101 28Th 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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