A double-wide quote needs a clear multi-section responsibility map. The joining, crossover, close-up, alignment, inspection, and correction handoffs should not disappear inside a package label.
Short answer: A double-wide setup quote should identify both sections and the exact home; separate or combined delivery and route limits; staging and placement; support or foundation system; anchoring and leveling; alignment, marriage-line connection, structural and utility crossovers, roof and exterior closure, interior trim, and weather protection; utilities and trades; steps, decks, skirting, gutters, drainage, and cleanup; permits, inspections, corrections, warranty, and final records. The cost depends on the actual home, site, route, installation design, local process, responsibilities, and unresolved conditions.