multi-unit housing

I sign the contract.

私は契約します

I sign a contract for a flat.

私は集合住宅を契約します

I sign a contract for a flat at the estate agent.

私は不動産屋で集合住宅を契約します

I sign a contract for a flat at the estate agent the day after tomorrow.

私はあさって不動産屋で集合住宅を契約します

I sign a contract for a flat at the estate agent with my younger brother the day after tomorrow.

私は弟とあさって不動産屋で集合住宅を契約します