Keystone Development Our focus at Keystone Development is to design and build custom quality homes that fulfill our clients dreams and exceed their expectations. We build high-quality, distinctive custom homes for real people who want only the best. Our home buyers love our personal approach to making sure their home is tailored to their tastes, lifestyle and budget. Since 1999, Keystone Development has taken great pride in working with clients one-on-one from pre-build to completion. This personal touch sets Keystone Development apart from other builders in the highly competitive homebuilding industry. We don’t build cookie-cutter homes! Keystone Development works with the best designers and tradesmen to ensure that every custom home we build will be unique, exceptional and distinctive. We incorporate the warmth and richness of natural materials, with cutting edge technology to create exceptionally well-crafted, environmentally sound and architecturally unique homes.