Freestanding pergolas isolate the structure from the house; attached pergolas can integrate more tightly with a patio but create a building-envelope connection.
Start with the constraint
Freestanding systems need their own complete post layout and foundations but avoid penetrating the house wall. Attached systems may reduce posts yet require a properly engineered ledger or wall connection.
What changes the decision
Roof drainage, siding, flashing, eaves, windows, and door clearances become more important when the pergola touches the building.
What to verify before buying
Choose freestanding when placement flexibility and separation from the house matter. Choose attached only when the building structure and waterproofing can support a proper engineered connection.
How we research pergolas
We prioritize material specification, roof system, published wind and snow engineering, span, drainage, anchoring, installation requirements, warranty, accessory ecosystem, and total configured cost. Local building codes and site-specific engineering take priority over general product claims.
Prices, specifications, firmware, and configuration-driven features can change. Check the current manufacturer page and local requirements before buying or installing equipment.