General contractor costs ;20% – 30% of the total project

Architect fees ;$125 – $250 per hour Interior designer fees ;$50 – $200 per hour Kitchen designer rates ;$65 – $250 per hour Painter hourly rates ;$20 – $50 per hour Plumber hourly rates ;$70 – $120 per hour Electrician rates ;$50 – $100 per hour HVAC technician ;$50 – $150 per hour Landscaper costs ;$50 – $150 per hour

Fee Structure ;Average Cost

Hourly Rate (Principal) ;$150 - $250 Hourly Rate (Project Manager) ;$125 Hourly Rate (Intern) ;$45 - $90 Per Square Foot ;$2 - $15 Percentage ;5% - 20%