Canada Mortgage and Housing notes that sharing facilities can produce savings in both development and operating costs.
Savings in development costs can be illustrated by shared laundry and/or bathroom facilities. On a square-metre basis, the bathroom is often the most expensive unit to construct in a dwelling because of the costs of labour, tiling, plumbing, fixtures and service trenching.
Similarly, shared eating facilities that are found in many seniors’ homes as well as other forms of congregate housing can be complemented with smaller facilities within individual units for preparing snacks and breakfasts.
Shared indoor facilities also positively impact operating costs. A shared kitchen and dining area allows for larger, commercial-sized equipment, a set-up that can be more energy-efficient than having all households each operating their own deep freezer, refrigerator or oven.