Self-Storage Business for Sale! The Self- Storage business is one of the fastest growing sectors of Real Estate Investment in the country. Newton Self-Storage is a 30x80 building and has 24-units with a mix of unit sizes ranging from 5x10 up to 10x20's. Newton Self Storage is a great value-add investment opportunity that sits on 1.4 +/-acres in the heart of Newton. This large lot has room for expansion, with great visibility and high traffic counts located on State Hwy 134. More details available upon request.