Regarding your lease renewal, it is generally recommended to have a written agreement to protect both parties' interests. This agreement should outline the terms and conditions of the tenancy, including the rental amount, tenancy period, and any other relevant details.

You may need to pay stamp duty on the new agreement, the amount of which depends on the rental amount and tenancy period. It's advisable to consult with a lawyer to ensure that the agreement is legally sound and protects your rights as a tenant.