Myers Development Co., L.P. Single Home Development Throughout the Western United States Myers Development Co., L.P.(ALY General Partner) was created to build out land owned and aquired by The Myers Group of Tuscon, AZ. The current project is a 256 first time buyer single family detached project located in Casa Grande AZ. Ryness Group is the marketing company overseeing all sales activities. The Myers Group | The Ryness Company Projects Under Development 272 Single Family Detached First Time/Senior Product. Casa Grande, AZ.