We are currently doing them. 3 men 2 days, but there is alot goes in them. Standard stuff plus outside lights front and back, TV points in every bedroom, living room and dining room. All coaxes run to loft space. Most have separate downstairs loo that has a new extract fan to core and fit. Out building with 1 x dsso and a bulkhead fitting switched from hallway. All chopped in, no trunking except for drop to CU and risers (mains and tv) to loft. doing 2 a week then boss has us catching up on a few private bits on the 5th day. he is pushing them for 2.5 a week but the contractors don't want properties half done left over weekend.