Units of measure for painting
Each piece of painting work has its own unit, and keeping them apart is what makes the estimate checkable. These are the units estimators use and how each is measured.
| Item | Unit | How it's measured |
|---|---|---|
| Walls | SF | Room perimeter × height, less large openings, by finish type and number of coats. |
| Ceilings | SF | Room area, by finish (drywall, exposed structure). |
| Doors and frames | each | Counted from the door schedule; some estimators convert to an equivalent SF per door. |
| Exposed piping and duct | LF or SF | Where the finish schedule calls for painting exposed MEP. |
| Paint | gallons | SF × coats ÷ coverage (tool defaults: 300 SF/gal primer, 350 SF/gal finish) plus 10% waste. |
How estimators take off painting
- Read the finish schedule first. It tells you which surfaces get which system and how many coats; the takeoff follows it room by room.
- Measure surface areas. Walls by perimeter × height, ceilings by area. Keep each coating system (primer + 2 coats, epoxy, dry-fall) as its own item.
- Count doors, frames and specialties. Doors, frames, handrails, bollards and exposed items are counts, not area.
- Convert to gallons. Divide SF × coats by coverage and add 10% for roller, sprayer and touch-up loss.
- Price labor from production. Use roller or spray production by surface type, and adjust for height, cut-in, colors and occupied spaces.
Waste factors and order quantities
Waste covers cut-offs, breakage, laps and spillage, and it's added to the net quantity before rounding up to what the supplier sells. Figures marked as tool defaults are the same ones the Trade Takeoff Worksheets start with, and you can edit them there.
| Item | Factor | Notes |
|---|---|---|
| Paint | 10% | Tool default for spillage, roller and sprayer loss and touch-up. |
| Primer coverage | 300 SF/gal | Tool default; porous new drywall can take more. |
| Finish coverage | 350 SF/gal | Tool default; deep tones may need an extra coat. |
Crew production rates
Labor is quantity divided by production. These rates are per 8-hour crew-day for commercial work, from the same library as the crew-day production estimator: typical mid-range planning values with a low-to-high range, not a promise of output. Crew skill, layout, access and weather move them, and your own crews' records beat any library.
| Activity | Crew | Low | Typical | High | Labor |
|---|---|---|---|---|---|
| Paint walls, prime and 2 coats, roller | 2 painters | 2,400 | 3,200 SF | 4,000 | 0.5 hrs per 100 SF |
- Paint walls, prime and 2 coats, roller 2,400 to 4,000 SF, typical 3,200
Worked example: 30,000 SF of walls, prime and 2 coats
The activity is paint walls, prime and 2 coats, roller, with a crew of 2 painters at the typical rate of 3,200 SF per crew-day:
- Crew-days: 30,000 SF ÷ 3,200 = 9.4 crew-days.
- Labor hours: 9.4 crew-days × 2 workers × 8 hours = 150 hours.
- Range: 7.5 crew-days at the high rate to 12.5 at the low rate, a spread of 5 crew-days on the same quantity.
Multiply the labor hours by your burdened hourly cost to price the labor. The spread between the low and high rate is why production is the assumption to check first on a painting bid: the same takeoff can carry very different labor. Run your own quantities in the crew-day production estimator, and get the burdened rate from the labor burden calculator.
What drives the cost
- Number of colors. Accent walls and many colors per room add cut-in, masking and setup time.
- Surface and system. Epoxies, dry-fall on exposed structure and high-performance coatings cost far more per SF than latex on drywall.
- Height and access. Exposed ceilings and stairwells need lifts or scaffolding.
- Occupied work. Night work, protection and daily cleanup in occupied buildings cut production.
Common exclusions and clarifications
A painting price is only as good as the scope it describes. These exclusions come from our scope library for painting and wall coverings (CSI 09 91 00); list the ones that apply so the GC levels your number fairly.
- Wall coverings, special coatings and epoxy floors unless listed as included.
- Painting of factory-finished items, mechanical equipment and electrical panels.
- Caulking of joints between dissimilar materials by other trades.
- Repair of drywall beyond normal paint preparation.
- Colors requiring more than two finish coats for coverage (deep tones and specialty bases).
- Exterior painting unless listed as included.
Clarifications that often go with them:
- Up to the number of colors stated; additional colors priced per color.
- Surfaces delivered ready for paint; drywall repair beyond normal preparation is extra.
Pick, edit and export these in the scope inclusions and exclusions library, or load them straight into a proposal with the bid proposal builder.
Free tools for painting estimating
- Trade takeoff worksheets: measure painting areas and get order quantities with the same waste factors, then download an Excel takeoff.
- Crew-day production estimator: turn painting quantities into crew-days, duration and labor hours with the rates on this page.
- Labor burden calculator: find the true cost of a crew hour, with taxes, insurance and benefits.
- Scope inclusions and exclusions library: pick proposal-ready painting exclusions and clarifications.
- Bid proposal builder: send a branded painting proposal with the scope language loaded.