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1726-1730 Polk St

Nob Hill, SF 94109 0620017 2 units · 2 fl · 1920

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 Nob Hill
At or below average
avg 2.4
0
FewerMore

This building has 0 novs (7y), at or below the Nob Hill average of 2.4.

Rent & eviction protection

Is 1726-1730 Polk 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 1920
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
POLK
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 built1920
Total area
Property typeMulti-Family Residential
Tax statusNone
Blocklot0620017
Ownership

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

Owner name
Oshiro & Wirattigowit Trust
Mailing address
Mark S Oshiro & Wanpen Wira 156 Saint Charles Ave San Francisco CA 94132
Last sale
051997

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.

1726 Polk St, San Francisco, CA 94109
1730 Polk St, San Francisco, CA 94109
Augrented Insights
Initial analysis

The property at 1726-1730 Polk Street is a two-story multi-family residential building with retail space, dating from 1920 and located in San Francisco's Nob Hill neighborhood. Owned by the Oshiro & Wirattigowit Trust, this building has undergone several significant maintenance and improvement works over the years. Most recently, in April 2024, a $34,000 re-roofing project was completed, following bathroom remodeling in 1996, electrical upgrades in 2005, and various plumbing improvements including sewer line work in 2013 and sink installation in 2012. The building experienced fire-related issues in 1986 when repairs were done following fire damage in the restaurant, and multiple fire violations were recorded in 2007-2008 related to safety equipment and combustible storage, though these were subsequently closed.

Recent concerns include a plumbing complaint from June 2023 regarding liquid discharge affecting neighboring properties, and two instances of graffiti reported in September 2023 (one being potentially offensive). The property has experienced multiple fire alarm activations over the years, usually determined to be unintentional, with one contained cooking fire incident recorded. Several 311 calls have been made regarding the property's surroundings in 2023-2024, including reports of sidewalk defects and waste issues, though many were resolved without finding any violations. The building's commercial component appears to be active, with ABC and DPH restaurant referrals approved for 1730 Polk Street. While the property has a history of various maintenance and compliance issues, the majority have been addressed and resolved, with no recent violations recorded since 2021.

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

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Risk rating

How 1726-1730 Polk 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
87th percentile

Out of 1125 buildings in this neighborhood, 146 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.

DBI tenant complaints (past 7 years)

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

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

12-Month severity forecast
No violation 50.7%
Moderate concern 44.6%
Severe concern 4.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

1726-1730 Polk St event timeline

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

2026
DBI Complaint Jun 12
At 1726 polk st over the front door of the building leading to the tree directly in front of the building. the most armature installation of electrical wiring with christmas tree lights and discover pulp lighting. please come and inspect this situation. (311 sr 101004238137)
Electrical Inspection Division

See all 9 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1726-1730 Polk 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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