CITY OF TORONTO HOME RENOVATION PERMITS Design and Consulting Fees: Hiring an interior designer or architect can insert towards the cost but usually leads to a far more customised and professionally executed venture. Design fees will vary broadly but usually range from ten% to 20% of the full renovation cost. https://topdirectory1.com/listings12801647/home-renovation-toronto-prices-little-known-facts-about-city-of-toronto-home-renovation-rebates