The layout of a 4,000 sq.ft. home generally includes four to five bedrooms, three to four bathrooms, a living room, a dining room, a kitchen, and additional rooms, depending on the layout. If you’re planning on painting the interior, it will cost between $12,000 and $16,000. For the exterior, you can expect to pay between $7,000 and $15,000. If you want to get both jobs done at once, the price ranges from $19,000 to $31,000 to paint the entire house.
The average cost to paint a room yourself is $100 to $300, which includes supplies and paint. Painting a house interior DIY is time-consuming and requires moving furniture, prepping the area, applying the paint, and cleaning up. Compare this to hiring professional painters at $300 to $800 per room.

When you’re considering paints, you should also factor in the type of exterior that needs to be covered. Different sidings require different preparations and may also need different types of paints to achieve the best results. Metal or aluminum are materials that require both sanding and priming prior to any application of paint. For the best adherence, the siding must be primed at least twice. This, of course, increases the amount of time invested in the project as well as the expenses for additional materials.
The average three-bedroom house is around 1,300 sq.ft., which can generally cost between $4,700 and $6,200. Prices will vary based on how many coats of paint you need and the complexity of the process.