Single Family Home for sale by owner in Allegan, MI 49010. Up to 4 bedrooms, this unique "treehouse" is perched on the banks of the Kalamazoo River, with breath-taking views and sunsets! Zoned either single or multiple-family, it can also be used for commercial purposes. Parking for ten cars, with in-city services. You have to see it to believe it.... See site for full property details.