CITY OF TORONTO HOME RENOVATION PERMITS Design and Consulting Service fees: Choosing an interior designer or architect can add towards the cost but often ends in a more customised and professionally executed challenge. Design expenses may vary greatly but generally range between ten% to 20% of the total renovation cost. https://topdirectory1.com/listings12801428/toronto-home-renovation-quotes-facts-about-home-renovation-jobs-toronto-revealed