You could consider keeping it empty and using it for your own storage.

Of course I really love the ADU in the multi family space where you can build multiple ADU's on one lot as well as convert non livable space like car ports, breezeways, and storage areas to livable units so long as you meet fire egress.As to Dan's comments, I agree that appraisals are not coming in to the cost to build in many cases (but not all cases) which can trap equity which is why I have specifically stated numerous times the importance of a long term hold (bare minimum of 5 years and 10 years better).

We left more in the house in locked storage rooms than we should have.

I want to do storage or build shops for commercial rentals.

They're out there, but I've also started adding self storage to my portfolio to adjust for the current multifamily market.Feel free to connect & PM if you want to talk more

We have one house that comes with no storage and no basement, I don't want to show it if they want storage and a basement , it is not worth the time but I don't want to discourage them if it is workable for them and they are a good candidate.

The challenge is not with reporting taxes but making sure your BTC is safe, you understand how wallets operate; if you are LT holder of BTC - then def need a cold storage.

I live in one SFH and the other SFH is uninhabited and temporarily my business' shop and storage (general contractor, full time).

With limited space, mini storage is a great low risk investment that is virtually a turnkey business.

I like your idea of sauna, hot tub, etc.At a quick glance on Air DNA, it’s around 60% occupancy.I also would make it biker friendly, and add a covered bike storage.