Dig Cooperative owners include a licensed general contractor, landscape contractor, architects, skilled carpenters, plumbers and gardeners. We can assist you as an independent contractor, home owner builder or work as a consultant or auditor with your contractor and architect's plans. As a collective we have an extensive combined experience, including building Berkeley’s first permitted greywater system and California’s first permitted constructed wetland for use as a secondary treatment of residential wastewater.  See our portfolio.