How to Estimate a Paint Job (Step-by-Step for Painters)

A practical method for painters to estimate interior and exterior jobs: measuring, paint quantities, labor hours, materials and mark-up.

Underbid and you work for free. Overbid and you lose the job. A consistent estimating method is what lets painting businesses quote quickly and still make money.

Here's a step-by-step method you can use on every job.

1. Measure the paintable area

Measure each room's walls (perimeter × height), ceilings and trim separately, and deduct doors and windows. Note the surface condition and anything that needs repairs. The Paint Calculator & Estimator app can scan a room so you just tap the walls to include.

2. Calculate materials

• Paint = area × coats ÷ coverage, plus 10% waste. Use the paint calculator or the app.
• Primer for new drywall, stains and big color changes.
• Sundries: tape, plastic, caulk, patching compound, roller covers. Many painters add a flat percentage of the paint cost.

3. Estimate labor hours

Use your own production rates: how many square feet you or your crew paint per hour, for each surface type. Track them on a few jobs and you'll have reliable numbers. Add time for setup, prep, cutting in, cleanup and travel.

4. Price it

1. Labor = hours × hourly rate.
2. Materials = paint + primer + sundries.
3. Add overhead and profit as a mark-up.
4. Check the total against a per-square-foot sanity check for your area.

5. Present a clear quote

List rooms or areas, what's included (walls, ceilings, trim, coats, colors), the price, and what's excluded. See our painting quote template. In the app, the job turns into a client-ready PDF or Excel report in seconds.