Yes it mostly add up the value while selling your home or if you want to live in the same home.I think you should consult a home improvement company who can understand exactly what you want and they can discuss your project with you, ask questions and make suggestions, and then prepare a free, no-obligation estimate for finishing your home improvement.

They will rightly estimate the value of your home.

I have no idea what a compost deck might be. Is the attic bedroom legal, did you get a permit for it?

Some do and some do not; there is no magic formula, and almost none recoup their value 100%; it also depends on what a buyer wants; your best bet would be to either have an appraisal or ask a realtor.

My home currently is worth around 160 according to Zillow. I put on a compost deck as well as a half bath and made the attic to a bedroom. I also updated all the windows and doors. Anyone have an idea how much that should boost my home value? Thanks