Stosh Thomas Architects PC at 4682 Nebo Drive in La Mesa provides architectural design for residential additions, commercial tenant improvements, and exterior retail expansions requiring zoning-variance applications across San Diego County. Construction-document sets specify roofing materials, underlayment type, and drainage-slope calculations, with installation coordinated through roofing contractors like Coastal Crest Roofing during the buildout phase. Code-compliance expertise spans California Building Code Title 24 energy standards, ADA accessibility requirements, and fire-separation assembly ratings for multi-occupancy structures. The practice handles La Mesa municipal-code review for commercial projects along La Mesa Boulevard and tenant-improvement buildouts in the Grossmont Center retail corridor. Site-plan development integrates hardscape, grading, and planting layouts, with retaining walls, irrigation, and drought-tolerant plantings executed by HLE Landscape & Design from the architect's approved grading and planting plans. Commercial-project documentation includes Type V-B wood-frame structural details, occupancy-load calculations, and egress-path dimensioning to International Building Code and California Fire Code standards for assembly and mercantile use groups.