Big Rock Construction is a building company based at Patons Rock in Tasman, working across Nelson and the wider Tasman region. It builds complete homes and does large renovations, from groundwork to final finishes. It also builds retaining walls, decks and outdoor structures, and it does pontoons and custom exterior builds. Kitchen and bathroom upgrades are a core part of the work, and the company also handles commercial fit-outs. It installs acoustic soundproofing and fire protection systems in residential and multi-unit builds. The company works with a network of trusted specialist contractors where a job needs them. Customers say the work was on budget and on time, that the team gave useful design input, and that the team stayed calm and creative on a difficult site. One customer praised the service as genuine.