Carrie must have forgotten that the Palmers live in an apartment building. That's why Deacon could afford a summer home and they can't. Doug and Carrie own an actual house while Deacon and Kelly rent an apartment and now (own?) a cottage. I'm sure that the Heffernans could afford to rent an apartment which would even things up. By Carrie's logic, an apartment and a cottage is equal to a house and a cottage. Too bad Doug didn't have notice the discrepancy and tell her, they could have avoided the trouble.
Edited 2 total times.