GMH Builders gmhbuild.com info@gmhbuild.com (707) 757-5050 GMH Builders Inc. is a Sonoma based general contractor focused on commercial, hospitality, tenant improvement, healthcare, multi-family and estate residential construction. Location Address 19150 Sonoma Hwy Sonoma, CA 95476 Mailing Address PO Box 1773 Sonoma, CA 95476 Products & Services Facilities & Construction Contractors Update Profile