CONTRACTOR FOR HOUSE RENOVATION TORONTO Design and Consulting Service fees: Employing an interior designer or architect can insert for the cost but normally leads to a far more customised and skillfully executed venture. Design costs may vary greatly but generally range from ten% to 20% of the full renovation cost. https://exceeddirectory.com/listings322472/home-renovation-designers-toronto-city-of-toronto-home-renovation-permits-for-dummies