For my 16X40, we put in about $30,000.00.
It has a cement floor, insulation through out, five 8X10 breeder coops, one 8X16 layer coop and each has a 8X16 enclosed run.
I have two other coops, one is 8X10 and houses two seperate breeder coops and another 14X16 that houses one breeder coop. The latter cost about $2,000.00 by the time we insulated it and made the run and the second aroung $1,200.00 as it was built from scratch.