How Much Does It Cost to Paint a Room? DIY vs Pro by Room Size

Quick Answer: Room Painting Costs

DIY costs: Small room (10×10, bathroom) = $50–$100 in paint and supplies. Medium room (12×12, bedroom) = $75–$150. Large room (15×20, living room) = $120–$250. These assume two coats of mid-range paint on walls only (not ceiling).

Professional costs: Small room = $200–$400. Medium room = $300–$600. Large room = $500–$1,000. Pro costs include labor ($25–$50/hour, usually 4–8 hours per room), paint, and all supplies. Ceilings add 30–50% to both DIY and pro costs.

Paint Quantity by Room Size

One gallon of paint covers approximately 350–400 square feet in one coat. To calculate wall area: add the length of all walls, multiply by ceiling height, then subtract window and door areas (roughly 15–20 sq ft per window, 20 sq ft per door).

Small bathroom (5×8, 8ft ceiling): ~180 sq ft of wall = 1 gallon for 2 coats. Standard bedroom (12×12, 8ft ceiling): ~340 sq ft of wall = 2 gallons for 2 coats. Large living room (15×20, 9ft ceiling): ~560 sq ft of wall = 3 gallons for 2 coats.

Always buy slightly more than calculated — color matching a second batch later is difficult. Leftover paint stores well for years for touch-ups. If changing from a dark color to a light one, you may need a primer coat plus two top coats (add 50% more paint).

DIY Supply List and Costs

Essential supplies for one room: paint ($30–$60/gallon for mid-range), roller frame + covers ($10–$15), paint tray ($5), 2-inch angled brush for cutting in ($8–$12), painter's tape ($5–$8 per roll, need 2–3 rolls), drop cloths ($5–$15), stir sticks (free at paint counter).

Nice-to-have items: paint edger tool ($8–$12) saves time cutting in around ceilings, extension pole for rollers ($10–$15) saves your back, spackle + putty knife ($8–$10) for filling nail holes, fine-grit sandpaper ($5) for smoothing patches.

Total DIY supply cost for a first-time painter: $80–$150 for a medium room, but the roller, brushes, and drop cloths are reusable for future rooms — subsequent rooms drop to mainly paint cost. Use our paint calculator to get exact gallon counts.

Professional Painter: What You're Paying For

Professional painters charge by the room, square foot, or hour. Room-based pricing is most common for residential work: $200–$400 for bedrooms, $300–$600 for living rooms, $150–$350 for bathrooms. These typically include two coats of paint on walls.

What's included: surface prep (patching, sanding, cleaning), priming if needed, masking/taping, two coats of paint, and cleanup. What's usually extra: ceiling painting (+30–50%), trim/baseboard painting (+$1–$3 per linear foot), wallpaper removal ($1–$3/sq ft), and lead paint testing/abatement in older homes.

Get 3 quotes minimum and ask specifically: how many coats, what brand/quality of paint (they should use at least mid-range), do they move furniture or do you, and what's the warranty on their work (most offer 1–2 years). Cheapest is rarely best — a sloppy paint job is worse than no paint job.

Tips to Save Money on Room Painting

Buy paint during sales — major brands run 30–40% off sales several times per year (Memorial Day, Labor Day, Black Friday). Stock up on neutral colors you know you'll use.

Skip the tape if you have a steady hand. Professional painters rarely tape — they "cut in" freehand with an angled brush, which is faster and gives cleaner lines once you practice. Start in a closet or behind furniture to build confidence.

Use a paint-and-primer-in-one for same-color or lighter-color changes — it eliminates the separate primer coat and saves a gallon of product. However, for dramatic color changes (dark to light), a dedicated primer ($15–$25/gallon) plus two top coats gives better coverage than three coats of paint-and-primer.