Paint Job Labor Cost Estimator
Estimate the total labor cost for painting a room or space based on wall area, ceiling, trim, number of coats, and your local painter's hourly rate.
Formulas Used
Gross Wall Area = 2 × (Length + Width) × Ceiling Height
Net Wall Area = Gross Wall Area − (Doors × 21 sq ft) − (Windows × 15 sq ft)
Ceiling Area = Length × Width (if selected)
Trim Linear Feet = Perimeter + (Doors × 22 lf) + (Windows × 18 lf) (if selected)
Painting Hours = (Net Wall Area ÷ 150 + Ceiling Area ÷ 120) × Coats + Trim LF ÷ 60
Prep Hours = Painting Hours × 0.20
Cleanup Hours = 1.0 + (Coats − 1) × 0.5
Total Hours = (Painting Hours + Prep Hours) × Condition Factor + Cleanup Hours
Labor Cost = Total Hours × Hourly Rate
Condition Factors: Good = 1.00 | Fair = 1.15 | Poor = 1.35
Assumptions & References
- Wall painting productivity: ~150 sq ft per hour per coat (smooth surfaces, roller application).
- Ceiling painting productivity: ~120 sq ft per hour per coat (overhead work is slower).
- Trim/baseboard productivity: ~60 linear feet per hour (brush work).
- Standard door opening deduction: 3 ft × 7 ft = 21 sq ft per door.
- Standard window opening deduction: 3 ft × 5 ft = 15 sq ft per window.
- Door trim allowance: 22 linear feet per door (frame both sides + top).
- Window trim allowance: 18 linear feet per window.
- Prep time (masking, drop cloths, light sanding) estimated at 20% of painting time.
- Condition factor accounts for additional prep: patching holes, sanding, priming bare spots.
- Trim is assumed to receive one coat; walls and ceiling receive the specified number of coats.
- Average U.S. painter hourly rate: $35–$65/hr (HomeAdvisor, 2024); default set to $45/hr.
- Estimate covers labor only — paint, primer, brushes, rollers, and drop cloths are excluded.
- For commercial projects or specialty finishes (faux, epoxy), apply an additional 25–50% surcharge.