I'd say it's reportable based on the below.
4. Mixed-use property. A closed-end mortgage loan or an open-end line of credit to improve a multifamily dwelling used for residential and commercial purposes (for example, a building containing apartment units and retail space), or the real property on which such a dwelling is located, is a home improvement loan if the loan's proceeds are used either to improve the entire property (for example, to replace the heating system), or if the proceeds are used primarily to improve the residential portion of the property. An institution may use any reasonable standard to determine the primary use of the loan proceeds. An institution may select the standard to apply on a case-by-case basis. See comment 3(c)(10)-3.ii for guidance on loans to improve primarily the commercial portion of a dwelling other than a multifamily dwelling.
3(c)(10)-3. Examples - covered business- or commercial-purpose transactions. The following are examples of closed-end mortgage loans and open-end lines of credit that are not excluded from reporting under Â§ 1003.3(c)(10) because, although they primarily are for a business or commercial purpose, they also meet the definition of a home improvement loan under Â§ 1003.2(i), a home purchase loan under Â§ 1003.2(j), or a refinancing under Â§ 1003.2(p):
ii. A closed-end mortgage loan or an open-end line of credit to improve a doctor's office or a daycare center that is located in a dwelling other than a multifamily dwelling;