In terms of cost per square footage for each house, the first one is the most affordable.
Mortgages are loans gotten from banks or other financial entities to help people buy houses. The mortgage's collateral is the house itself. That means the lender can sell the home and collect its money if the borrower stops making monthly loan payments and fails.
If you don't repay the loaned money for the purchase or refinancing of a home, the lender has the right to seize your property under the terms of a mortgage, which is a contract between you and the lender.
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