Calculating Rehab Costs for Duplex

[Erica Larence-Penna]

I am looking at purchasing a duplex in Cranston, RI. ARV is about $270,000 to $280,000 and the seller is willing to sell it at $150,000. I am struggling with calculating rehab costs, however. I did have a contractor come out and take a look, but he is going to need a week to give me a ballpark figure. It does need quite a bit of work - kitchens need to be redone, bathrooms need to be redone, hardwoods will need to be refinished and I plan to rip out the linoleum, tile, and carpet in any remaining rooms and replace it with LVP, I'd like to take the wood paneling down and then repaint the walls. The house settled and the porch is slanted and some of the floors are a bit uneven so that is also going to need to be fixed. One of the boilers is brand new. Roof is nearing the end of it's life, but probably still has a few more years left. It's not in bad shape. House is about 1,620 sq. ft. I currently have a four-unit that we are househacking, so once we actually get in it we plan to BRRRR over the next couple of years.. Here's what I'm thinking, but this would be my first complete BRRRR, so I could be way off. I also included photos.

Refinish hardwoods: $5000

Renovate bathrooms (shower insert, vanity, fixtures, flooring, toilet): $10,000

Renovate kitchens (cabinets, countertops, flooring, appliances): $20,000

Paint/cosmetics: $3000 (plan to paint most on my own, so this may be cheaper, but I'm going to budget for contractor doing it anyways)

Again, I'm new to this, so please be easy on me if I am completely off!

Thanks!