cost to add 1 bedroom and bathroom
0. 0. The average cost of adding a bedroom and a bathroom to a house can be $4000 to $5000 for the bedroom and another $1500 to $2500 for the bathroom depending on the size of the bedroom and bath. Most contractors will add 1/3 material cost for labor.Thanks Jason Alvarez.dding bedroom and bathroom on house can be done by converting a prevalent floor spaces that could go approximately around $3,000 -$6,000 and adding bedroom to house cost can go anywhere between $200 -$5,000. Average cost for a bedroom addition when hire a contractor can go between $7,500 -$50,000 and even lot more.