Roof capacity, attachments, wind and snow loads, ground mounts and roof condition: the structural side of getting solar and exterior work approved.
A roof is ready for solar when an engineer confirms the framing, the roofing has years left and each penetration is flashed. Covers materials, leaks, liability.
Wind uplift usually governs racking, snow matters in cold climates, and ground mounts add soil and foundation checks. Rooftop versus ground, with Florida notes.