If you've been getting pergola, verandah and patio quotes in Adelaide, you've probably noticed the terms get used interchangeably. Here's the practical difference.
Pergola
A pergola is an open-roof or partially-roofed outdoor structure - often timber slats, polycarbonate, or open framework with vines/screens. Light passes through. Adelaide pergolas average $4,500-$14,500 at 6m x 4m depending on material.
Verandah
A verandah has a solid roof, usually Colorbond, attached to the house. Gable, flat or curved profile. Adelaide verandahs average $11,500-$19,500 at 6m x 4m.
Patio
In Adelaide trade usage, 'patio' usually means an insulated sandwich-panel roof system (cooler underneath, integrated lighting). Stratco Outback, Solarspan, Coolade are common brands. Adelaide patios average $15,000-$24,000 at 6m x 4m.
Council planning treats them similarly
All three need Building Rules consent. Over 20m2 floor area triggers Development Approval via PlanSA. Heritage properties always need DA.