In the construction of any building pursuant to the provisions of this subchapter, the Executive Director of the Virgin Islands Housing Finance Authority may make available materials, supplies, technical services, surveys and equipment to such applicants and upon such terms and conditions as may be established from time to time by rules and regulations promulgated by the Executive Director of the Virgin Islands Housing Finance Authority and approved by the Governor; Provided, That the value of such materials, supplies and the use of equipment shall be computed and charged to the applicant as a loan.