A 106,371-square-foot wholesale club could be headed to Blanding Boulevard in Middleburg, according to a conceptual site plan now under Clay County review.

The Jacksonville Daily Record first reported Monday, Oct. 19, that the plan shows the building along Blanding Boulevard near Gregory B. Clary Way. The site would include 486 parking spaces and three commercial outparcels ranging from 1.16 to 1.19 acres each, totaling more than 3.5 acres.

The plan is labeled "Wholesale Club & Outparcels — Concept C." It also calls for a deceleration lane along Blanding Boulevard, a proposed traffic signal, stormwater ponds and open space.

No retailer is named in the plan. No lease has been confirmed, and no construction has been approved.

The building's square footage is identical to a BJ's Wholesale Club permit under review in Pasco County for a location in New Port Richey, the Daily Record reported. That match has fueled speculation the Middleburg proposal could be a BJ's, but the site plan does not identify any tenant.

BJ's already operates a store about 12 miles north at 560 Blanding Blvd. in Orange Park. A Middleburg location would give the chain a second club along Clay County's main commercial corridor.

The wholesale club chain has been on an expansion push. BJ's announced in May that it planned to open 12 new clubs nationwide during its 2026 fiscal year as part of a strategy to add 25 to 30 clubs every two years, according to a company press release. Three of those new Florida locations are in Ocala, Port St. Lucie and Lecanto. Middleburg is not on that announced list.

The proposal lands on a stretch of Blanding Boulevard drawing significant commercial interest. The Ferber Co., a Ponte Vedra Beach real estate firm, paid $3.99 million on Aug. 7 for an 11.41-acre parcel at Blanding Boulevard and Henley Road, according to the Daily Record. That site is planned for a retail and dining center anchored by LongHorn Steakhouse, Olive Garden and Dutch Bros Coffee, with initial retailers expected to open in late 2027.

Ferber Executive Vice President Tom Mundy said the completion of the First Coast Expressway at the end of 2025 opened the door. "There was strong tenant demand for the trade area with the new road network opening and residential growth slated for Clay County, particularly for full-service, dine-in restaurants," Mundy said.

The wholesale club conceptual plan does not list a project cost or construction timeline, and the developer who submitted it has not been publicly identified. No public hearing date has been scheduled.