In my area the common ones that fall into that category are garbage and sewer but in other areas they might also include things like water and electric even.

When I did a room addition I purposely added electricity and doors so that the house could easily be split. 

Some of our clients have even installed two separate electric meters on the property, which would require two separate addresses.

Renovations, starting two days post-closure, included overhauls of kitchens, bathrooms, flooring, electrical, and plumbing systems, and the addition of in-unit washer-dryers, with an average expenditure of $33K per unit.

Maybe get some electric scooters or bikes and just charge the guest by the minute.

I'd recommend speaking with your tax advisor to discuss this further as what I said above may be outdated as I know the Inflation Reduction Act changed a lot of the energy credits for both individuals and businesses.

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I went as far as separate electrical meters.

Created en suite bed/bath, extra bedroom/office/playroom, created family/tv room, added a couple of windows in dark rooms, installed new HVAC, ran all new pex lines/valves/shut offs, all new hardwood flooring and carpet, all new and expanded kitchen cabinets, new appliances, converted 1/2 bath into full bath, repurposed 2 unused rooms (1 into a 4th bedroom/office/playroom and one into a family room, installed new interior and exterior lighting, new electric garage door w/remote, and landscaping What was the outcome?

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