2. Come to an agreement. There are probably others in your life who have a vested interest in your home. Get their consensus.
3. Make a very educated guess. Estimate the area you'll need to cover. Measure the height and width of each wall. In the U.S., coverage estimates are given in square feet, everywhere else on the planet uses the metric system. To find the area of a given wall, simply multiply the height by the width.
- Keep a detailed list you and others can make sense of like "Liv. Rm. west wall __ sq. ft."
- Don't forget to subtract for windows and doors.
- As you estimate, err on the high side (round up). It's better to have too much paint than to
4. Plan the budget. Costs will vary greatly, depending on price and quality. Choosing mid to upper grade paint, expect to pay in the area of $350.00 in paint alone for a 2000 sq. ft. house. Add another $100 to $200 in brushes, rollers, pans, tape, and other materials. Don't forget food, if you plan to feed your workforce. When it comes to materials, not all paints are equal. Some truly cover with one coat, some say they do but don't. Your costs will double if you have to apply two coats to everything, so buying the cheaper paint might cost more in the long run. Trust your paint professional salesman (to a certain degree) to tell you which paint to buy. You can generally go cheap on primer, expensive on top coats.