Alterna Huse designs and builds detached houses and summer houses, with published plan families including long houses, angle houses, H-shaped houses, kinked layouts and functionalist villas. Customers can start from an existing floor plan and alter room arrangement, dimensions and materials.

The company coordinates the building process and presents package and campaign-house options alongside individually adapted projects. Its main activity is conventional new-build housing in Southern and South Jutland rather than transportable modular units.