The rule that you apply depends on whether or not the facility is a dwelling unit. 220.55 applies to dwelling units. 220.56 applies to facilities other than dwelling units. 220.61(A) applies to any facility. 220.61(B)(1) applies only to dwelling units. 220.61(B)(2) applies to any facility. Clear as mud, right? :roll:
In your example, you do not have a dwelling unit, so 220.55 is not applicable. Neither is 220.61(B)(1).