Echelon Inspection Services in Alpine performs comprehensive residential and commercial property inspections, covering structural, mechanical, electrical, and plumbing systems for pre-purchase, new-construction, and 11-month builder-warranty evaluations. Pre-sale inspection reports feed directly into transaction timelines managed by Parker Properties, with deficiency summaries structured to support repair-request negotiations under California Civil Code Section 1102. Supplemental scopes include mold-air-quality sampling with laboratory analysis, lateral sewer-line camera surveys, irrigation-system pressure testing, and pool-and-spa equipment evaluations — each issued as a standalone addendum to the primary report. HVAC system assessments document compressor age, refrigerant type, ductwork condition, and BTU output, flagging deferred maintenance for follow-up by Aerify Heating and Air. Drone-mounted cameras capture high-resolution imagery of tile, composite-shingle, and flat-roof surfaces, identifying cracked flashing, ponding zones, and photovoltaic-mount penetrations without requiring ladder access to steep or multi-story rooflines.