u/Legitimate_Bear_6555

I’m here in Tacoma and looking into dadu builds on my property , how much do I need for a down payment and what’s the financing process like , I want to move my sister in the house I currently live in and , my family would move to the new build is this practical? And how much would a 3 bed basic house be I’m not finding much info online and I am interested in

I want to build something like this , what kind of materials would I need to achieve this look? I just have one strip in the back I need to do that’s 40feet across , ( I would also like to add a gate , )how much would this come out to? Guesstimate please (photo in the comments)