The most profitable and reliable installment option is to buy an apartment right from the developer. The buyer and seller, in addition to signing the contract, who is to be purchased by real estate, must also conclude an unit accumulation agreement. This document is supposed to install the installment until the final completion of the construction. You can also indicate there a longer period of payment. When applying for installments, there is practically no risk of refusal, but property rights can be obtained only after the debt is completely repaid to the developer. The average installment period is usually from six months to two years. The amount of the initial contribution is much higher, in comparison with mortgage lending, and is 25-30 %. The entire amount can be paid by the client ahead of schedule.