Cooper J. Kessel


COOPER J. KESSEL, the principal architect at Alternative Energy Design, Inc., in Sonora, California, has over 30 years experience in designing and building Sustainable Design projects.



Bachelor of Architecture
California State Polytechnic University,
San Luis Obispo, California


NCARB Cert. #44101

Architect, State of California – #C-14839

California General Building Contractor-#B-337107


National Council of Architectural Registration Boards (NCARB)

American Institute of Architects

Northern California Solar Energy Association

American Institute of Architects, Sierra Valley Chapter Board Member

Cal Poly Alumni Honor Roll

Scarab Honorary Scholastic Fraternity

Tuolumne County Local Transportation Commission, Chairperson


Upon receiving his Bachelor of Architecture Degree in 1972, Cooper returned to Sonora, California and worked for Kessel Design Service, his father’s firm. Cooper worked as a project manager for the firm which serviced commercial and residential clients in the central California area.

In 1977, Cooper obtained his General Building Contractor’s license and established C. KESSEL CO. where he provided design/build services to residential clients interested in passive solar and energy efficient designs.

In 1984, Cooper received his registration as an architect, enabling him to expand his design/build services to include commercial projects. At that time, he incorporated the business as ALTERNATIVE ENERGY DESIGNS INC., and created a separate division for each service: COOPER KESSEL, ARCHITECT & ASSOCIATES, and AED CONSTRUCTION.

Since its creation, COOPER KESSEL, Architect, & Associates has served a wide variety of clientele throughout Northern California, with projects ranging from custom homes to government and commercial facilities.