These robots might build your house

Self-driving trench diggers. Drones that digitally re-create buildings. Roomba-like devices that outline where every beam on a floor should go.

The construction site of the future is already here as homes, office buildings and industrial sites go up around the country. Robots that can lay bricks, put up drywall and tie rebar are pitching in at a time when the construction industry is in major flux.