Many factors impact how often you should paint your home, but there are basic guidelines you should follow. For common spaces like living rooms, dining rooms, and bedrooms, you can get away with painting every five to seven years as long as you use high-quality paint.
The cost to paint the interior of a house ranges from $300 to $800 for a 10x12 bedroom, and between $2,100 and $3,900 for a whole house interior. Vanities, cabinets, doors, textured or designer painting, and artistic additions such as murals cost extra. Professional Interior Painting Rates Project Average Cost Bedroom Walls $320 – $850 Bedroom (Full) $1,340 – $2,580 Bathroom Walls $100 – $150 Bathroom (Full) $525 – $875 Kitchen Walls $150 – $300 Kitchen Cabinets $1,500 – $5,000 Living Room Walls $200 – $400 Living Room (Full) $800 – $1,200 Dining Room Walls $280 – $400 Dining Room (Full) $550 – $980 Accent or Textured Walls $32 – $80 Interior doors (each) $75 – $150 Fireplace $1 – $4 /SF Wall Mural or Trompe L'oeil $35 – $150 /SF Stairwell $16 – $27 /LF Full Apartment Interior $1,500 – $3,100 Interior House Walls $900 – $2,100 Full House Interior $2,900 – $8,800

Before painting, always make sure that the surfaces you intend to clean are completely dry. This will increase the possibility of ending up with a smooth, perfectly even painted surface. Therefore, avoid painting when it’s rainy or excessively humid.
2. Smooth For Appearance: Backroll over the "M" you just created to smooth out the paint that's heavy in those areas for an even application over your 5' coverage area.