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The Happy Sumo

££ - £££
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14647 Delaware St, Unit 100, Westminster, CO 80023-9187
+1 303-920-4400
11:30 - 22:30
Open now
All hours
Sun 12:00 - 21:00
Mon - Thu 11:30 - 21:00
Fri - Sat 11:30 - 22:30
More Info
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63 Reviews from our TripAdvisor Community

Traveller rating
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Time of year
Showing 63: English reviews
Boulder, Colorado
Level Contributor
29 reviews
19 restaurant reviews
common_n_restaurant_reviews_1bd8 6 helpful votes
3 of 5 bubbles Reviewed 4 weeks ago

Interesting place. Service has been good on our several visits, but the cleanliness is scary, especially since they are serving raw fish. The dirt: Sushi counter was not clean, the foot support on the Sushi Bar Stool was so greasy that it was not possible to rest one's foot on the lower bars and the wooden floor has many dried... More 

Thank Npv4fun
Denver, Colorado
Level Contributor
3 reviews
3 restaurant reviews
5 of 5 bubbles Reviewed 11 September 2016

This is an outstanding restaurant. the Sushi and Sashimi are always fresh excellent. The menu also has some wonderful entrées. Great place for those parties that have sushi eaters and non sushi eaters. My favorite appetizer is the Sashimi plates, and favorite entre is the samurai steak. I comes with tempura or stir fry vegetables. I always go for the... More 

Thank vascsurg2016
Gillette, Wyoming
Level Contributor
73 reviews
30 restaurant reviews
common_n_restaurant_reviews_1bd8 23 helpful votes
3 of 5 bubbles Reviewed 1 August 2016

My husband and I stopped for dinner around 7 pm on a Sunday. The location was well staffed and it wasn't overly busy. The crispy calamari was bland that we went it back and the server removed the charge from the bill. I had the Siam Noodles which had a great balance of noodle to meat to veggie ratio, but... More 

Thank ERBY2014
Aurora, Illinois, United States
Level Contributor
78 reviews
37 restaurant reviews
common_n_restaurant_reviews_1bd8 21 helpful votes
5 of 5 bubbles Reviewed 28 July 2016

We enjoyed our choices at the Happy Sumo! I was delighted to find ingredients like bacon bits, macadamia nuts, and nacho cheese available on a roll! We also tried 2 deserts, and enjoyed them both.

Thank Scott F
Abu Dhabi, United Arab Emirates
Level Contributor
181 reviews
44 restaurant reviews
common_n_restaurant_reviews_1bd8 55 helpful votes
4 of 5 bubbles Reviewed 27 July 2016 via mobile

I loved the variety of food choices, but I was not wowed by my food. The vegetable pot stickers tasted horrible. The edamame was done perfectly. I also had the maki combo, which was good. I'd go back again, but avoid the pot stickers.

Thank hannajomeans
Denver, Colorado
Level Contributor
10 reviews
8 restaurant reviews
1 of 5 bubbles Reviewed 26 July 2016

At the end of June, I took my lady friend to the Happy Sumo in Westminster to try some oriental food. We arrived in time to take advantage of happy hour, which included drinks and some sushi, which I always like to try. The drinks and the sushi were good, but when it came to the main courses, imagine my... More 

Thank MarcusC007
Broomfield, Colorado
Level Contributor
55 reviews
33 restaurant reviews
common_n_restaurant_reviews_1bd8 22 helpful votes
2 of 5 bubbles Reviewed 18 July 2016

I live in Broomfield so the Westminster Happy Sumo restaurant has been somewhere I visit regularly. The food is really good and the atmosphere is pleasantly unique. The one major issue I've been having lately is with their customer service. My most recent issue has been occurring when I call in to place orders to go. I call in and... More 

Thank Theresa B
Denver, Colorado
Level Contributor
485 reviews
334 restaurant reviews
common_n_restaurant_reviews_1bd8 155 helpful votes
4 of 5 bubbles Reviewed 12 April 2016

Celebrating a birthday, 11 people in total, we arrived a few minutes earlier than our reservation and were greeted immediately and seated within a few minutes. Prompt attention by the waitress (she is from Thailand) taking our drink orders which were delivered right away. Our food orders were taken and the food delivered also in a very timely manner. Found... More 

Thank The_Don_Francisco
Rifle, Colorado
Level Contributor
54 reviews
36 restaurant reviews
common_n_restaurant_reviews_1bd8 19 helpful votes
3 of 5 bubbles Reviewed 22 March 2016

Ate with family, looking for sushi. Sushi ok, other dishes really unimpressive, all with same thick, sticky teriyaki(?) sauce, miso soup was watery. Not what you'd expect at the price. Service was incredibly slow - dining room was NOT crowded, but our food took over 40 minutes to arrive, which is way too long. Husband was served the wrong beer,... More 

Thank Michelle D
Denver, Colorado
2 reviews
1 of 5 bubbles Reviewed 2 March 2016

Worst customer service I have ever experienced. I love the sushi here but that is the only thing going for them. I don't know why corporate can't see what a disaster the employees have turned this restaurant into. The last visit, we waited up front for about 10 minutes, no hostess in sight. Finally, a server comes up and takes... More 

Thank Nora Q

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Restaurant Details

Rating summary
  • Food
    4 of 5 bubbles
    3.5 of 5 bubbles
  • Value
    3.5 of 5 bubbles
    4 of 5 bubbles
Japanese, Sushi, Asian
Lunch, Dinner
Restaurant features
Seating, Waitstaff, Wheelchair Accessible, Takeout, Reservations, Television, Serves Alcohol
Good for
Open Hours
12:00 - 21:00
11:30 - 21:00
11:30 - 21:00
11:30 - 21:00
11:30 - 21:00
11:30 - 22:30
11:30 - 22:30
Location and Contact Information
  • Address: 14647 Delaware St, Unit 100, Westminster, CO 80023-9187
  • Location: United States  >  Colorado (CO)  >  Westminster
  • Phone Number: +1 303-920-4400

Questions & Answers

Here's what previous visitors have asked, with answers from representatives of The Happy Sumo and other visitors
2 questions
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Fort Collins, Colorado
over a year ago

See all questions (2)

Questions? Get answers from The Happy Sumo staff and past visitors.
Posting guidelines
Typical questions asked:
  • Do you have gluten-free options?
  • Is there a dress code?
  • Do you allow dogs on the outdoor patio?