Glossary of Terms Real estate jargon can often be confusing. Click here for meaningful definitions of real estate terms. Mortgage Calculator Use this handy tool to get an idea of your monthly mortgage payments. Affordability Calculator This calculator will give you a general idea of how much mortgage you can afford based on your down payment and what you want your monthly payments to be. Closing Costs Closing costs are expenses, usually paid by the buyer, that are incurred when transferring ownership of property. Use this tool to to get an idea of what your total closing costs will be. Realtor.com Official site of the National Association of Realtors® featuring the world's largest database of homes for sale.