The Gwinnett Board of Commissioners approved a $409,506 contract Tuesday to convert existing storage space to build a new classroom and educator workroom at the Gwinnett Environmental and Heritage Center in Buford.

Educational programming doubled during the last year, causing the center to reach its capacity. The EHC offers classes and special events for K-12 students, homeschoolers, Boy Scouts, Girl Scouts and seniors, plus it holds exhibits, symposiums and community events for the general public.

The contractor, Bayne Development Group LLC, will renovate about 3,500 square feet on the first and second floors. Improvements will include relocating HVAC, electrical and pneumatic air systems and new energy efficient lighting. Construction will begin in October and finish by the end of the year. The 2014 SPLOST program is funding the work.