The Three Diamond Door Health Inspection Grade
American · 211 Knickerbocker Avenue, Brooklyn, NY 11237
Current Grade
Current grade
N/A
Latest score
23
Last inspection
March 28, 2026
Critical / non-critical points
23 / 0
The Three Diamond Door currently has no posted grade from the NYC Department of Health. Its latest inspection on March 28, 2026 found 3 violations, including 3 critical violations, for a total score of 23 points.
Latest Violations
3 critical · 0 non-critical
Critical
- Food Protection Certificate (FPC) not held by manager or supervisor of food operations.
- Food contact surface not properly washed, rinsed and sanitized after each use and following any activity when contamination may have occurred.
- Raw, cooked or prepared food is adulterated, contaminated, cross-contaminated, or not discarded in accordance with HACCP plan.
Latest Inspection Details
March 28, 2026
- Date
- March 28, 2026
- Type
- Cycle Inspection / Initial Inspection
- Action
- Violations were cited in the following area(s).
- Grade
- N/A
- Score
- 23
- Critical points
- 23
- Non-critical points
- 0
- Violations
- 3 (3 critical, 0 non-critical)
Inspection History
3 inspections
Mar 28, 2026
Inspection Type: Cycle Inspection / Initial Inspection
Action: Violations were cited in the following area(s).
Sep 21, 2024
Inspection Type: Cycle Inspection / Re-inspection
Action: Violations were cited in the following area(s).
Jun 16, 2023
Inspection Type: Cycle Inspection / Initial Inspection
Action: Violations were cited in the following area(s).
Grade Trend
The Three Diamond Door received a A grade in its most recent graded cycle inspection in September 2024 with a score of 13.
What This Grade Means
NYC inspection scores are penalty points. Lower scores are better. A score of 0–13 generally qualifies for an A, 14–27 for a B, and 28+ for a C.
The Three Diamond Door's latest score: 23
Grade range: B
Learn more about NYC restaurant grades →Frequently Asked Questions
What is The Three Diamond Door's current NYC health grade?
The Three Diamond Door does not currently have a posted NYC health grade.
When was The Three Diamond Door last inspected?
The Three Diamond Door was last inspected on March 28, 2026.
What was The Three Diamond Door's latest inspection score?
The Three Diamond Door's latest inspection score was 23 points.
How many violations did The Three Diamond Door have in its latest inspection?
The Three Diamond Door had 3 violations in its latest inspection, including 3 critical violations and 0 non-critical violations.
Where is The Three Diamond Door located?
The Three Diamond Door is located at 211 Knickerbocker Avenue in Brooklyn, NY 11237.
Data source: NYC Department of Health and Mental Hygiene restaurant inspection data via NYC Open Data. Inspection results may change as new inspections, reinspections, or adjudications are posted.
Restaurant ID: 50001866
Last updated: June 26, 2026