Additions and extensions

• What you want to add, and roughly how bigA sunroom, a bedroom over the garage, a two-storey
• Your lot dimensions and where the house sits on itThe survey from your purchase has it
• Whether you have drawingsNothing gets permitted without them
• Where the services areGas, water, sewer, hydro

General guidance, not advice on your own situation. The person you hire decides what applies to it.