The 2014 Stoneham Strategic Action Plan included a market study on the types and sizes of new businesses right for Stoneham.
Chamber of Commerce
The Stoneham Chamber of Commerce and its members can help advise you on doing business in Stoneham.
There is also a Merchants' Group specifically focused on the downtown area.
If you're interested in opening a business in Stoneham, then one of your first stops should be the office for the Director of Planning and Community Development.