When buying a , there are various costs and important documents that need to be taken into consideration. Costs may include down payment, closing costs, taxes, insurance, and other fees. Important documents that you'll need to have in order can include the purchase agreement,  title, home inspection reports, insurance documents, and mortgage details. It's crucial to fully understand all the potential costs involved in the property purchase and ensure that you have all the necessary documents in place to complete the transaction smoothly.