Yes. Depending on the location and length of time the boxouse will be there, we can do off-grid (tanks monitored and filled/pumped as need, RV-style) or grid-connected (linked to existing house's plumbing)

Does Boxhouse absorb the costs of permitting and construction for homeowners? What sort of duration is necessary?

We're going to do this selectively: getting the first ADU design fully licensed in a given MSA is going to be important for us. We'll want to see a year+ commitment to justify the cost.