• gradeGrade A
• inspection score100 pts
• critical violations0
• last inspectedJanuary 29, 2026 →
• address20627 Golden Springs Dr 1-K, Diamond Bar 91765

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Is Double - O clean?

Double - O is currently Grade A from LA County Department of Public Health, Environmental Health, from an inspection on January 29, 2026. No critical violations were recorded at that visit. On Cooked's ladder that reads clean 😇.

What did inspectors find at Double - O?

Nothing was written up at the most recent inspection on January 29, 2026. A clean sheet like this is the best possible result — no violations of any severity were recorded.

When was Double - O last inspected?

Double - O has 4 inspections on record going back to October 18, 2023, averaging 89 points.

Double - O vs Walnut

Walnut runs 97% clean across 115 tracked restaurants — 112 clean, 3 mid, 0 cooked.

Against the 115 spots Cooked tracks in Walnut, this one comes out cleaner than 96% of them.

Other spots in Walnut

• B Dingtea
  mid · December 4, 2023
• A L&L Hawaiian Barbecue
  clean · August 6, 2024
• A Apgujung Inc
  clean · June 30, 2026
• A Fanchelin Llc
  clean · September 5, 2023
• A Zavaro Inc
  clean · August 6, 2024
• A Paris Baguette Diamond Bar
  clean · April 11, 2025

See every restaurant inspection in Walnut →

How Los Angeles grades restaurants

Los Angeles County posts a letter placard in the window, and unlike New York the score runs the friendly way: higher is better. 90 to 100 points earns an A, 80 to 89 a B, and anything below that a C. The county inspects roughly every six months to a year depending on risk, and a failed inspection can close a kitchen until it is fixed. Because LA’s scores are final at the time of inspection — there is no pending window — a letter can be read straight off the score when the placard field is blank.

Read the Los Angeles ratings guide →

Inspection findings and available history come from the authority’s published records. Cooked checks daily, but the authority publishes in batches, so a recent visit may not appear yet. Read the date on each result and check the official source for newer information.

Source: LA County Department of Public Health, Environmental Health via LA County Open Data. Cooked refreshes this data daily — this listing's most recent inspection is dated January 29, 2026. Inspection results describe one moment in a kitchen's life, not a permanent verdict.

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Cooked covers 10 cities on official inspection data — see who's clean, mid, or cooked near you.