Painter Pricing Guide: How to Charge for Interior and Exterior Jobs

Why Painting Bids Go Wrong

Painting contractors lose money in two predictable ways: underestimating surface prep time, and failing to account for the true cost of materials. A room that looks like a two-hour repaint can easily become a six-hour job once you strip wallpaper, sand rough patches, prime over dark colors, and cut in around crown molding. If your bid didn't include those hours, you're working for free.

This guide covers the primary pricing methods for interior and exterior painting, real-world price benchmarks, and how to structure bids that protect your margin even when surprises show up.

The Three Pricing Methods Painters Use

Per Square Foot

Charging per square foot of wall (or floor) area is the most common method for residential painting. It scales naturally with job size and is easy for customers to understand. The challenge is that per-square-foot rates assume a roughly standard level of prep — so you need to add line items when the job is more complex.

• Interior walls: $1.50–$4.00/sq ft painted surface
• Exterior siding: $1.00–$3.50/sq ft
• Ceilings: $1.50–$3.00/sq ft
• Trim and baseboards: $1.00–$2.50 per linear foot

Per Room

Flat per-room pricing is fast for customers to compare and fast for you to quote. It works well when you have enough jobs under your belt to know what a typical bedroom, living room, or bathroom takes.

Time and Material

T&M is appropriate for commercial jobs, historic restoration, decorative finishes (faux, stucco, Venetian plaster), or any job where the scope is genuinely unclear. Always set a not-to-exceed cap so customers aren't signing a blank check.

Painting Price Reference: Common Residential Jobs

How to Scope Prep Work Accurately

Prep is where most painting bids go wrong. A professional paint job is 50% prep and 50% paint — but many contractors price 90% of the job as paint time and assume prep is trivial.

Interior Prep Items to Line Out

• Patching nail holes and cracks (add $0.25–$0.50/sq ft for heavy patching)
• Sanding rough or peeling surfaces
• Priming bare drywall, stain-blocking over water damage or smoke
• Covering dark colors (add a coat — and add the cost)
• Moving and covering furniture
• Removing outlet covers, switch plates, light fixtures

Exterior Prep Items to Line Out

• Pressure washing (add $200–$500 depending on size)
• Scraping and sanding loose or peeling paint
• Caulking windows, doors, trim (add $150–$400)
• Priming bare wood or previously unpainted surfaces
• Masking and protecting landscaping, windows, decking

Materials: How to Estimate and Mark Up

A common rule of thumb: one gallon of paint covers 350–400 sq ft for walls in good condition. For rough surfaces, heavily textured ceilings, or porous masonry, reduce to 250–300 sq ft per gallon in your calculations.

Mark up materials 20–35%. You're sourcing, transporting, and managing materials — a markup is earned. For premium coats (Benjamin Moore Aura, Sherwin-Williams Emerald), factor in $65–$90 per gallon.

Handling Change Orders Mid-Job

Every painting contractor encounters mid-job scope changes: the customer decides they want the closet painted, the ceiling turns out to be 12 feet instead of 9, or water damage behind a wall surface requires additional prep. Have a simple change order process before you start any job — not after.

A change order should state the additional work, the additional cost, and require a signature before you proceed. Fieldbase lets you create and send change orders from your phone while you're still on the job site — keep the project moving without returning to the office to paperwork.