David Marshall is “In tune with his clients needs and plants.” David is very conscientious and enthusiastic about his work. He heals the ground he walks on and grounds the ground he works on. Thank you David for a job well done!
~ Carol Eckels, Director of the Spiritual Healing Center – Mill Valley, CA.

David fixed and maintained our irrigation system and has always been available whenever we have needed him. He fixed and replaced outdated irrigation and drip systems while keeping our plants thriving and healhy. We recommend David to anyone who needs repair or a complete irrigation overhaul!
~ Geoff, Bridgeway Gym – Sausalito, CA.

When I moved to San Anselmo, I suddenly had a garden to care for.  With absolutely no gardening experience, David patiently identified what was in the garden, how to care for it, and came up with a cost-effective annual plan for maintenance.  He and Alex installed a drip irrigation system, and has been willing to answer questions via e-mail.  He had also provided suggestions for future planting.  His work is thoughtful and well done.
~ Maggie Fillmore

Warren Design helped us evaluate and repair what we thought was a relatively new irrigation system – year 2000. System testing was completed in a timely fashion and repairs were review in advance. Substantial leaks, poor quality watering and a malfunctioning controller were the culprits. David has continued to maintain the quality of our system since the major repairs at a very affordable rate.
~ Dana Marshall

David added a couple of relatively small watering systems for us. He was easy to work with and reasonably priced. I would work with him again.
~ Carl Schwarcz