When 10×13 is enough
A 10×13-ish footprint often works well for a dining table or a single lounge/conversation zone while keeping the structure compact.
When 10×20 earns the extra cost
A 10×20 footprint makes more sense when you need two functional zones—such as dining plus lounge, or outdoor kitchen plus dining—or when your furniture layout simply cannot breathe in a smaller footprint.
Measure posts, not just roof area
Compare actual exterior dimensions and post locations from each manufacturer. Combined-module 10×20 configurations may have more posts or separate powered sections.
The cost effect
Moving to 10×20 can increase both product and installation cost substantially. Buy the larger size because the layout needs it, not because the nominal square footage sounds better.
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