27 C.F.R. § 25.23
(a) Use of brewery in production of beer or cereal beverage. A brewery may be used only for the following purposes involving the production of beer or cereal beverages:
(b) Other authorized uses. A brewer may use a brewery for other purposes, not involving the production of beer or cereal beverage, upon approval from the appropriate TTB officer, if the purposes:
(c) Application. Except as provided in § 25.25 for operation of a tavern on brewery premises, a brewer desiring to use a brewery for other purposes shall submit to the appropriate TTB officer , an application listing the purposes. The appropriate TTB officer will approve the application if the use for other purposes will not jeopardize the revenue or impede the effective administration of this part and is not contrary to specific provisions of law.
(Sec. 201, Pub. L. 85-859, 72 Stat. 1389, as amended (26 U.S.C. 5411))
[T.D. ATF-224, 51 FR 7673, Mar. 5, 1986, as amended by T.D. ATF-268, 53 FR 8628, Mar. 16, 1988]