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Interior Painting Cost Calculator: Estimate Your Budget Room by Room

By the Cooley Brothers Painting team · Published February 18, 2026 · Updated October 6, 2026 · Filed under Interior Painting Tips

Interior Painting Cost Calculator: Estimate Your Budget in 5 Quick Steps

Quick answer: In the South Bay, Cooley Brothers Painting's typical interior prices are $500 to $700 for bathroom walls, $800 to $1,400 for bedroom walls and $2,500 to $5,500 for living room walls. Adding ceilings and trim costs $200 to $600 for a bathroom, $400 to $600 for a bedroom and $1,500 to $2,500 for a living room. Use the calculator below to add up your rooms.

Interior painting cost calculator

Choose your rooms to see a typical South Bay price range from our published pricing.

  • Bathrooms$500–$700 each, walls
    1
  • Bedrooms$800–$1,400 each, walls
    2
  • Living or family rooms$2,500–$5,500 each, walls
    1

$4,600 – $9,000

4 rooms · walls only

Schedule Your Estimate

Ranges are Cooley Brothers Painting's typical South Bay prices. Room size, wall condition, color changes and how much patching is needed decide where your rooms land. Your written estimate is the exact number.

How to use this interior painting cost calculator

  1. Count your rooms. Add each bathroom, bedroom and living or family room you want painted.
  2. Choose walls only, or walls plus ceilings and trim. Many homeowners start with walls and add ceilings, baseboards and casings when the budget allows.
  3. Read the range. The low end fits rooms in good shape staying in a similar color. The high end fits larger rooms, tall ceilings, lots of patching or a big color change.

The numbers come straight from our interior painting price guide, so the calculator and the price guide always agree.

Typical interior painting costs by room

RoomWallsAdd ceilings and trim
Bathroom$500 to $700$200 to $600
Bedroom$800 to $1,400$400 to $600
Living room$2,500 to $5,500$1,500 to $2,500

Example: a two-bedroom, one-bath refresh

Painting the walls in two bedrooms and one bathroom typically lands between $2,100 and $3,500. Add the ceilings and trim in all three rooms and the range becomes $3,100 to $5,300. Where you land depends on the size of each room and how much repair the walls need first.

What moves your interior painting cost up or down

  • Square footage and ceiling height. Bigger rooms and tall or vaulted ceilings take more paint and more time.
  • Patching and sanding. Nail holes, cracks and old repairs have to be fixed before paint goes on, or they show through.
  • Color changes. Going from dark to light usually needs extra coats.
  • Trim and doors. Every baseboard, casing and door adds detail work.
  • Furniture. Moving and protecting furniture and floors is part of the job.
  • Paint product and sheen. Higher-grade paints and specialty finishes cost more and often last longer.

Why no calculator can give you an exact price

A calculator can't see your walls. Two bedrooms the same size can sit at opposite ends of the range because one needs a dozen patches and a color change and the other only needs a fresh coat. That's why we walk every project with you, measure and photograph it, and put each prep step, repair and product in a written, itemized estimate. If you're comparing bids, here's why painting estimates differ and what to ask each painter.

How to get an estimate that fits your budget

  • Share your budget range up front. We can scope the project to fit it instead of guessing.
  • Paint in phases. Start with the rooms you use most, then do the rest later. Single-room jobs are welcome.
  • Start with walls. Add ceilings and trim now or in a later phase.

Painting the outside too? See our exterior painting price guide. Ask about our 2-year and 5-year workmanship warranty options.

What's included when Cooley Brothers paints your interior

  • A walk and written scope. We walk the rooms with you, measure and photograph them, and put every prep step, repair and product in writing.
  • Protection. Furniture moved and covered, floors protected, plastic and tape so dust stays put.
  • Prep. Loose paint scraped, edges and glossy areas sanded, holes and cracks patched, gaps caulked and repairs primed.
  • Finish coats and daily clean-up. Applied by an experienced crew, with the house cleaned up every day.
  • A final walkthrough. We go over every room with you and handle touch-ups before we call it done.

Want a pro to handle it? See how our interior painting service works from start to finish.

Frequently asked questions

How much does it cost to paint a bedroom in the South Bay?

Cooley Brothers Painting's range for bedroom walls is $800 to $1,400, plus $400 to $600 to add the ceiling and trim. Room size, wall condition, color changes and how much patching is needed decide where your room lands.

How much does it cost to paint a living room?

Living room walls typically run $2,500 to $5,500, plus $1,500 to $2,500 to add ceilings and trim. Tall ceilings, open floor plans and accent colors push toward the top of the range.

How much does it cost to paint a bathroom?

Bathroom walls typically run $500 to $700, plus $200 to $600 to add the ceiling and trim.

What makes interior painting cost more or less?

Square footage and ceiling height, the amount of patching and sanding, color changes (especially dark to light), trim and door count, furniture to move and protect, and the paint product and sheen.

Do you paint just one room?

Yes. Small jobs are welcome, from a single bathroom or bedroom to a front door. Many projects are done in phases.

Is the calculator price my final price?

No. It adds up our typical published ranges. After we walk your home, measure and photograph it, your written estimate lists the exact scope, prep, products and price.

Written by the Cooley Brothers Painting team
Family-owned painters in Torrance, CA since 2009. CA CSLB License #957815.

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