Caravan importers Geoffrey and Amanda Snell, of Waikouaiti, will soon be the 20th business to open in Palmerston in the past four years.
The Snells, who import UK-built caravans, have bought the Sanday St building recently occupied by the Palmerston museum, next to the railway station.
They expect to have the first caravans in Palmerston by the middle of next month.
The 19th new business, an old china and collectables shop, was opened recently by Palmerston resident Don Lee in the former butterfly and bird haven building.
The shop was open on Saturdays and Sundays, he said.
Crafty Girls Stash, a wool and patchwork fabrics shop, has also been opened this month by Glenys Donaldson.
The Tiverton St business is open daily except Monday.