Two fire crews were sent out at around 1.20am to a report of a property fire at The Sidings, Cranwell.
According to a fire service spokesman the fire damaged the patio doors and windows, part of the kitchen, garden furniture, a shed, fencing and three vehicles.
Crews from Sleaford and Brant Broughton wearing breathing apparatus used two hose reels and a main jet to extinguish the flames, aided by floodlighting to operate in the dark.