Developers David Schwab and Richard Johnson are conjuring some magic in the hills and valleys of Williamson County.

The owners of Brentwood-based The Principals Group have been involved in the land-development business in the greater Nashville area since the mid-1980s, and are excited about their latest project, the King Arthur-themed development known as Avalon. Almost all The Principals Group's projects are based on themes -- past projects have included golf courses, a marina, and equestrian themes. Avalon's medieval England theme is the latest evolution of the partners' creativity.

The Principals Group specializes in planning developments that feature upper-end housing in affluent neighborhoods. Homes are often priced at more than $1 million.

Recent area projects that showcase their talents include The Governers Club, Brandon Park Downs, and Lynnwood Downs in Williamson County and The Last Plantation in Gallatin. Both Johnson and Schwab are accomplished in the fields of land acquisition, land planning, infrastructure, financing, marketing, and sales.