Because of cohesion and transpiration, water is able to move against the flow of gravity in plants. The attraction of water to other water molecules, or cohesion, allows water to pull other water molecules up through the xylem.
Room addition cost about $210 per sq.foot and if there is a bathroom in addition you should add $5,000 in average and if there is a kitchen in addition you should add $10,000 in average to total price of $210 per sq.foot x sq. footage.
Bathroom additions typically cost around $125 a square foot. If your basement is not already waterproof, you will want to have this addressed at a cost of around $5,000. Egress windows should be added to any basement bedrooms, as well as family rooms and playrooms to ensure the safety of occupants. An egress window costs around $4,000.