46+ How Much Does It Cost To Paint A Wall US. Paint costs $15 to $50 per gallon on average and covers up to 400 square to calculate how much paint you need, times the wall length by its height and subtract for any doors how long does it take to paint a house interior? Cost of wall and trim paint for interior surfaces.
The wall and ceiling surfaces must be properly prepared, or the room's paint job won't look right.
For 1 square feet how much material is needed? How much would it cost to paint a 1600 sq ft house? Professional painting labor costs an average value of $35 to $45 per hour. Professional painters typically charge $300 to $400 per room.