The Treasure Valley's newest Costco opens Wednesday, November 5, 2026, at 8 a.m., and it is the largest warehouse store the Boise area has seen. If you are house-hunting in Star, the opening matters because the everyday big-box errands for a new home, from groceries to a garage full of moving boxes, mostly happen toward Meridian and Eagle. Here is what is confirmed about the new store, and what changed with Costco's other plans in the valley.
The new store: Meridian and Lake Hazel, near the Kuna border
The new location sits at the southeast corner of Meridian and Lake Hazel roads, with the address listed as 203 E. Tower Lane, Meridian, ID 83642. At roughly 200,000 square feet, it is Costco's largest store in the Boise area, with 16 fuel pumps and nearly 1,000 parking stalls. It becomes the fifth Costco in the Treasure Valley and the second in Meridian, a cross-valley drive from Star on a typical errand day.
The Eagle Costco plan was withdrawn
On October 16, 2026, Costco withdrew its application for a store in Eagle. The plan had called for a roughly 160,000-square-foot warehouse with a gas station on a parcel off Hill Road, between Highway 55 and North Horseshoe Bend Road. Eagle's public information officer confirmed the withdrawal and said Costco gave no explanation and has not indicated whether it is considering another location in Eagle. For now, the November 5 opening in south Meridian is the only new Costco on the valley's calendar.
One more dining note: Crave's second location
Eagle's Crave Kitchen & Bar, a local favorite in downtown Eagle, announced a second location in Meridian's Ten Mile Crossing, an 8,539-square-foot restaurant and bar across from Scheels. An opening timeline has not been announced yet. It is a good sign of the retail and dining energy around the valley as Star's own Moyle Junction project brings new shops and restaurants to the town's eastern entrance.
Store hours, fuel pricing, and membership details are set by Costco, so confirm the opening-week schedule with the store before you plan a trip. If you are considering 11555 W Pathview St, Paul Knighton can point out the practical routes to Meridian and Eagle when you tour the home.