Is it permissible to put a property in the name of a relative so that the bank may buy it from him, and then sell it to me in installments, for the purpose of obtaining financing to complete the house and pay off debts?

The act of registering the property in the name of a relative so that the bank can purchase it from him is forbidden and constitutes a trick to circumvent usury (riba). This is because the property belongs to you, and the bank will pay, for example, 100 to recover 120. The reality is that the commodity did not transfer from its owner to the bank, and then to you; rather, a stratagem was employed to obtain an interest-based loan. Sheikh al-Islam Ibn Taymiyyah stated that whenever the intention of the transactor is money for money for a specified term, it is usury.

The circumvention of usury in bank Murabahah appears in various forms, including when the applicant for purchase is himself the seller to the bank. In Murabahah for the one who commands the purchase, it is forbidden for the bank to purchase the commodity from a company or shop affiliated with the applicant or his agent.

Among the permissible alternatives is Tawarruq, such as buying a car or pure shares through Al Rajhi, and then selling them yourself to obtain cash. It is also possible to request the bank to purchase building materials so that it buys them and then sells them to you on a Murabahah basis.