| Business | Phone |
| Oak Tree Landscaping Po Box 6303, Concord 94524 | (925) 969-9332 |
| Gomez Landscaping 1680 Highland Ct # 6, Concord 94520 | (925) 691-8931 |
| Hwa Landscape Architects 1070 Concord Ave # 125, Concord 94520 | (925) 363-7288 |
| Karen Mahshi Assoc 3503 Halfmoon Ln, Concord 94518 | (925) 681-1551 |
| Serenity Garden Design Concord 94520 | (925) 827-3281 |
| Swanson & Swanson 5100 Clinton Rd # 1b Pmb 186, Concord 94520 | (925) 673-9040 |