Expanding Airbnb house

[Alex Moyers]

I'm m considering expanding my Airbnb (3beds/2baths house), but I'm not sure if adding 3 bedrooms and 2 baths to the current house or adding a detached 3/2 ADU next to it would be better. Making the addition look exactly like the existing house is hard and expensive, and I don't want it to look like a Frankenstein

Do you think large groups of 14 people would have a problem with staying in two homes instead of one? It would include two of everything (kitchen appliances, grills, etc.)