With over half a decade of working for mid-sized accounting organizations specializing in financial reporting, budget/forecasting, and compliance.

I would budget template !

Then there's a smattering of lenders who will fund 90-95% purchase and 100% rehab budget.  

My budget is around $400K, and I’m looking for subject-to's or seller finance since I likely won’t qualify for traditional financing.I’m looking for a single-family property, am also open to multifamily, and my plan would be to rent out a room or buy somewhere with the potential to add an ADU/casita.

It’s the same story I hear: the project was way over budget, it took too long, and I can’t sell the house for what I was told it was worth—the ARV.When I sit down and talk with people in this predicament, I work backward to understand where it went wrong.

Joshua,It’s definitely smart to track budget vs. actual throughout the renovation.

They want to know you won’t blow the rehab budget, stall out, or panic when something goes sideways.Once I had one project under my belt with clean documentation, lenders stopped questioning my ARVs and started competing for my business.A few lessons from that first deal:• Show up with a real scope of work• Know your comps better than the lender• Bring a contractor who’s licensed, insured, and organized• Present the numbers like a business, not a hopeAfter that, funding becomes a systems game instead of a confidence test.

Let over 7000 in charges to some wedding registry go through BofA was the one who got us out of that issue.

Rough budget number I've heard is $50/bedroom although situational based on vendor, living sf, area, etc.Best bet is to join your local Facebook group & ask other hosts in the area or call a few vendors & get some bids.

Partner Driven funded 100% of the project, including the $40,000 purchase and the $40,000 rehab budget.