COST OF HOME RENOVATION TORONTO Design and Consulting Expenses: Hiring an interior designer or architect can increase on the cost but typically leads to a far more customised and professionally executed venture. Design service fees could vary widely but commonly range between 10% to twenty% of the whole renovation cost. https://directorywidzard.com/listings12798733/city-of-toronto-home-renovation-permits-indicators-on-home-renovation-companies-toronto-area-you-should-know