I'd like to buy a house to house hack in the near future.  If there's enough land I was considering building another dwelling as a short term rental. Does anyone know about how much it would cost to tie water/sewer/electricity to an accessory dwelling unit a few hundred feet away from the primary residence, or would this vary heavily depending on the situation?

Has anyone built a permitted ADU on one of their properties? About how much did the whole thing cost? Was it worth it?