To buy a house, you will need several key documents, including proof of income and assets, proof of employment, information on debts, a credit report, a pre-approval letter, and a loan estimate. A purchase agreement is crucial as it formalizes the purchase and includes details such as identification of both parties, property description and condition, purchase price, contingencies, earnest money deposit, items included in the sale, closing costs and date, and terms of possession. Additionally, a home inspection report is often included to evaluate the property's condition. Other important documents may include financial documents for payment, such as cash or a certified check, or pre-approval for a loan if financing the purchase. A sale deed and mother deed may also be necessary to trace the property's history and finalize the sale[5).