Buck's Grill House is situated 1-1/2 miles north of Moab on property which was patented in 1898 as part of a ranch. The building was built in 1967 for a restaurant called Fort Moab by D. Eccles Johnson. It is near the original Fort Moab built by the earliest settlers to the valley in 1855.

The name of the restaurant was changed to the Sundowner in 1972. Chef Tim Buckingham purchased the restaurant in 1995 and renamed it Buck's Grill House.