Founded in 1988 and holding CSLB license #641493 (B-General Building), Collom Construction on Louisa Drive in La Mesa's Mt Helix area is a design-build firm with over 35 years of San Diego County project history. EPA Lead Safe Certification #NAR-29884-2 and OSHA 30-Hour Training credential #36-600719187 back the company's compliance framework for renovation work in pre-1978 homes, a regulatory layer that extends to the flooring removal and reinstallation scope handled by Finishing Touch Concrete Coatings, Inc on garage-to-ADU conversion projects. Full-service design-build delivery covers kitchen remodels, room additions, outdoor living spaces, and new-garage construction across La Mesa's Casa de Oro and Mt Helix neighborhoods. ADU conversions address the accessory-dwelling demand in the 91941 ZIP, where lot sizes and zoning allow secondary units that aging-in-place families coordinate alongside the in-home care schedules managed by MesaView Senior Assisted Living and comparable East County providers. Structural room additions on hillside parcels require engineered caisson foundations, Simpson Strong-Tie holdown connections at shear-wall intersections, and Title 24 energy-compliance documentation covering insulation R-values, fenestration U-factors, and HVAC load calculations for conditioned spaces exceeding 500 square feet.