This memo is intended for municipal planners and officials who may not know all the details of building code but have an interest in promoting housing built over or within commercial uses. We seek to distill essential considerations for constructing housing above retail in a straightforward, singular document. Small municipalities do not always have architectural support in their planning departments, and this can get in the way of due diligence for complicated code and constructability projects. This memo seeks to clarify the litany of challenges that such a decision would create. We would always recommend that local planners and officials also consult with code enforcement officers and fire code experts in looking at this complex issue.