TheJobNumbers

Painting Job Pricing Calculator: price a room like a pro

Price = (paint + sundries + labor) × (1 + markup). Paint is figured at 350 sq ft per gallon per coat using this week's verified shelf price — national median $32.92/gal for Behr Premium Plus as of Aug 24, 2026, selectable by metro below. Labor comes from your production rate by prep level, not a guess.

Quote this room at

$752

Paintable area
417 sq ft × 2 coats
Paint — 3 gal @ $32.92 (National median)
$98.76
Sundries (tape, plastic, patch — 12% of paint)
$11.85
Labor — 6.6 hrs @ $65/hr
$426.40
Direct cost
$537.01
Markup (40%)
$214.80

Labor assumes 150 sq ft/hr for standard prep (patch, sand, spot-prime) plus one hour of setup/cleanup. Coverage assumes 350 sq ft per gallon per coat (typical for premium interior latex on smooth walls).

How this calculator works — the formula

wall area = 2 × (L + W) × H − doors × 21 − windows × 15

gallons = ⌈(area × coats) ÷ 350⌉  ·  labor hrs = (area × coats) ÷ production rate + 1

price = (paint + 12% sundries + labor hrs × rate) × (1 + markup%)

Production rates: ~200 sq ft/hr light prep, ~150 standard, ~100 heavy (rolling, cutting-in, and prep combined). Deductions of 21 sq ft per door and 15 sq ft per window are standard estimating practice.

This week’s prices: Behr Premium Plus interior, 1 gal (eggshell)

Tracked at Home Depot and Lowe’s store-level pages across 20 metros. Stamps advance only when a fresh check succeeds — methodology.

Behr Premium Plus interior, 1 gal (eggshell) (per gallon) verified Aug 24, 2026
MetroHome DepotLowe’sWeek over week
New York, NY$37.49$37.40▼ $0.64 this week
Los Angeles, CA$35.49$35.95▲ $0.47 this week
Chicago, IL$32.80$33.10▼ $0.17 this week
Dallas, TX$31.29$31.10▼ $0.44 this week
Houston, TX$30.29$31.13▼ $0.19 this week
Phoenix, AZ$31.80$31.21▼ $0.50 this week
Philadelphia, PA$33.87$34.32▲ $0.49 this week
Atlanta, GA$31.63$31.35▼ $0.04 this week
Miami, FL$33.73$33.17▲ $0.39 this week
Boston, MA$36.33$36.02▲ $0.35 this week
San Francisco, CA$37.09$37.13▼ $0.43 this week
Detroit, MI$31.78$31.50▼ $0.03 this week
Seattle, WA$34.67$35.22▲ $0.13 this week
Minneapolis, MN$32.61$32.37▼ $0.26 this week
San Diego, CA$35.93$35.23▼ $0.62 this week
Tampa, FL$31.78$31.63▲ $0.30 this week
Denver, CO$33.36$32.83▲ $0.28 this week
St. Louis, MO$30.08$30.03▲ $0.21 this week
Baltimore, MD$33.08$32.67▼ $0.16 this week
Charlotte, NC$30.83$30.96▲ $0.39 this week
National median$32.92▼ $0.04 this week

Questions contractors actually ask

How much should I charge to paint a 12×12 room?

With standard prep, two coats, and a $65/hr rate, a 12×12×9 room (≈390 sq ft of wall after openings) prices around $600–$800 including paint at this week's verified price ($32.92/gal national median, Aug 24, 2026). Heavy prep or ceilings push it higher — run your own inputs above.

How many square feet does a gallon of paint cover?

Plan on 350 sq ft per gallon per coat for quality interior latex on smooth, previously painted walls. Textured surfaces, new drywall, and drastic color changes cut coverage — that's what the coats and primer settings are for.

What do painters charge per hour?

Typical billed rates run $55–$95/hr depending on metro and finish level. Your real floor comes from your burdened labor cost plus overhead — the hourly rate calculator builds it from your own numbers.

Is the paint price in this tool real?

Yes — it's the tracked shelf price for Behr Premium Plus interior (1 gal) at big-box retailers per metro, national median $32.92 as of Aug 24, 2026, re-verified weekly. The full 20-metro table is on this page.

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