To track your home or other real estate properties you own, please follow these steps:
Click Add > Account > Add a House to add a real estate account. For properties in the USA, we support syncing the property value with Zillow.
If you have a mortgage on the property, add another account of type "Loan". Set it's balance to a negative number, indicating it's a liability.
When you make mortgage payments, enter that as a transfer from your source account to the loan account.