Keith Robertson has been building in the Grass Valley area for over 30 years.
Specializing in: straw bale and hybrid methods, recycled materials, active and passive solar, and earth-bermed homes.
Sons Building & Development offers:
- straw bale and alternative building consulting
- greenhouse construction
- natural plaster finishes
- recycled materials
For more information and fees contact Keith at 530-273-7875.
