Bellomy & Co. plans to sell two self-storage facilities in Des Moines, according to a news release, to buyer StorageMart, based in Columbia, Mo. Afford It Storage in Grimes has 280 units. Country Club Mini Storage in Waukee has 170 units. Bill Bellomy, Michael Johnson and John Arnold represented the Iowa-based seller. StorageMart is the world’s largest privately owned self-storage company, according to the release. Bellomy & Co. is an Austin, Houston and Atlanta-based commercial real estate firm with a focus on the self-storage industry.