38 C.F.R. § 36.4305
In cases where intervening circumstances make it impracticable to complete the actual paying out of the loan originally proposed, or justify the lender in declining to make further disbursements on a construction loan, evidence of guaranty or of insurance of the loan or the proper pro rata part thereof will be issuable if the loan is otherwise eligible for automatic guaranty or a certificate of commitment was issued thereon: Provided,
(e) In the case of a construction loan when the construction is not fully completed, the amount and percentage of the guaranty and the amount of the loan for the purposes of insurance or accounting to the Secretary shall be based upon such portion of the amount disbursed out of the proceeds of the loan which, when added to any other payments made by or on behalf of the veteran to the builder or the contractor, does not exceed 80 percent of the value of that portion of the construction performed (basing value on the contract price) plus the sum, if any, disbursed by the lender out of the proceeds of the loan for the land on which the construction is situated: And provided further, That the lender shall certify as follows:
(2) No enforceable liens, for any work done or material furnished for that part of the construction completed and for which payment has been made out of the proceeds of the loan, exist or can come into existence.
(Authority: 38 U.S.C. 3703(c)(1) and (d))