The San Francisco Design Group offers Professional Building Design Services for Commercial Construction projects including: Building Design & Drafting, Structural Engineering, Plumbing Engineering, Electrical Engineering, Mechanical Engineering & Title 24 (Energy Calculations) for Construction Plans & Permit assistance in Northern California, San Jose , East bay & marin County areas. We draft construction plans for all facets of Commercial construction: REMODELS-ADDITIONS- TENANT IMPROVEMENTS-RESTARAUNTS-DENTAL OFFICES & COMPLEX. Professional Commercial drafting services. : architectural, additions, architect, engineer, drafter, drafting, draftsman, draughtsman, home PLANS, addition, designer, design house plans, remodel, permit, drawings, blueprints, blueprint plan, plans.