Many mortgage lenders offer borrowers One Time Close construction loans. This type of construction loan will finance the construction of a primary or secondary residence and the permanent loan when construction is finished. A One Time Close construction loan requires borrowers to sign only one set of documents and allows borrowers to lock in a rate for the permanent loan at this time. This type of home loan will allow for 12 months of construction time and during the construction period, interest is charged only on the funds that have been disbursed.