What to Check Before Buying a Main-Street Mixed-Use Property

A guide to the specific due diligence points that matter when a residential property also includes storefront space.

Main-street properties that combine living space with a storefront ask more of a buyer than a standard house does. Before you get attached to a property, it helps to know which questions need answers and which can wait.

Start with zoning. A building that looks like a live-work property on the outside needs to actually be permitted for that mix of uses. Ask for the zoning classification in writing and find out whether the storefront use is allowed outright or only through a variance or conditional permit. If it is the latter, ask what happens if that permit lapses.

Next, separate the systems. Mixed-use buildings often have one electrical panel, one heating system, or one water line serving both the residence and the commercial space. Find out whether utilities are metered separately. This affects both your monthly costs and your ability to lease the storefront to someone else later without disputes over who pays for what.

Look closely at the storefront's history. Ask what it was last used for, how long it sat vacant if it did, and whether any previous tenant improvements were permitted. Unpermitted buildout is common in older buildings and it becomes your problem, not the seller's, once you close.

Check accessibility and code compliance separately for the commercial portion. Requirements for a storefront are not the same as requirements for an apartment upstairs. An inspector who is not used to mixed-use buildings may miss this distinction, so it is worth asking directly.

Finally, get clear on insurance. A policy written for a single-family home will not cover a storefront, and a commercial policy may not cover the residence properly. You want one policy or a paired set of policies that both sides of the property are named in.

None of this needs to be intimidating. It just needs to happen in order, with each answer confirmed before you move to the next decision.