Sunroom Installation business. Are you handy building things? Create an inner oasis -- and a lucrative business -- by installing sunrooms. Business Overview The addition of a sunroom is a terrific way for many homeowner to increase living space, add an all-season retreat, and increase the value of their home for a relatively low investment. Sunrooms have become of the most popular home improvement projects in the past decade, and this fact is what makes starting a sunroom sales...