I'm wondering, what should my plans be in terms of figuring out what size to make the rooms, bathroom, kitchen, etc?

How we demo bathrooms and kitchens, etc...

The downstairs bathroom will need work and the living room will need paneling tore out and new flooring put it.

Living, kitchen (no dining), 2 bedrooms, and small bathroom.

In remodeling the master bathroom, we have the opportunity to make the walk-in closet a bit bigger and make the bathroom a bit smaller, or to make the bathroom less crowded and the walk-in closet a bit smaller.

The water heater is a fairly small priced item compared to things like roof, HVAC, kitchens, bathrooms, plumbing, hardscape, windows, and electrical.My estimate is you will cut bait in less than 5 years but will have learned some things so take this as a learning opportunity.

Four bedroom, two bathroom home spread between two floors with roomy living spaces and two cozy fireplaces.

If I added a bathroom before I sold it.. how much does that typically increase the value of my house by?

I’m looking at buying a potential house hack soon that is 7 bedrooms and 4 bathrooms.

So I guess it is win win for everyone.In this condition, if you are ADU enthutiast, you could either wait and see when and if ADU price and valuation would be adjusted so it's more profitable if it's being built.There's alternative though, like container house is only selling 40-50k that includes bathroom.