InterNACHI-certified and AHIT-certified inspector J.Sparks Home Inspections conducts 150-plus-point residential evaluations from Virginian Lane in La Mesa's 91941 ZIP near Lake Murray. Infrared thermography certification adds thermal imaging to standard visual inspection, detecting moisture intrusion behind walls and insulation gaps invisible to the naked eye — defects that often surface during the tenant-turnover property assessments managed by The Comana Company, Inc Residential Property Management. Those dual certifications and 25-plus years of construction and project management background give the inspector structural literacy that general-practice inspectors lack. Roof-system evaluation covers shingle condition, flashing integrity, and ventilation adequacy, generating repair-scope data that feeds directly into re-roofing estimates from contractors such as Raindance Roof Company Inc. The most technically demanding inspections involve pre-1960s La Mesa homes requiring simultaneous assessment of knob-and-tube wiring, galvanized supply piping, cast-iron drain lines, and original foundation sill plates for wood-destroying organism damage.