I have met and worked with some amazing and creative landscaping contractors in the bay area, so it is possible to find a good contractor if you try. When selecting a Landscape Contractor for your project the CSLB recommends you check references, qualifications, and license.
Bay Area Full Service Landscape Contractors

(Services include: Gardens, lawns, Plantscapes, Concrete, Brick, Flagstone, Block, Hardscape Patios, Walkways, Decks, Masonry, Retaining Walls, Boulders, Garden Design, Landscape Installation, Irrigation, Planting, Sod, Composite Decks, Flowers, Plants, Trees, Vines, Outdoor Lighting, Gazebos, Arbors, Fencing, Statuary, Pavers, and other landscape services.)