@Brendan Lawrence I think his videos were a while back and I believe he also has a video on using price per sq ft which is a little better. Plus I think it's geared towards wholesalers so they at least account for something in their offers.
Of course, each market is a little different. I use sq ft unit pricing in Washington and it gets me close enough to make a buying decision.
Prior to lumber going way up, we did an almost full gut in Chehalis for around 60k and one in Tacoma that was mid-level for around 30k. But the Chehalis house was small (1300 sq ft).
It was one of the first projects we did after we stopped doing the rehabs several years back (went to just buying and reselling or listing most properties) but most of our subcontractors were still around from when we were doing a lot more volume. Typically our unit pricing was known for most of the areas we are in prior to buying which obviously helps. Exception of demo, electrical, and plumbing which I either get a quick rough estimate or use a past job.
Chehalis was an extremely rough hoarder house that I didn't get to go into prior to buying so assumed the worst and it was worse than that :) but it was right around 60k regardless. Current material prices would probably raise the cost by around 4 to 5k more. 1/3 of the extra material because the roof needed to be fully re-sheeted.
Work involved:
3/4 of house new drywall and all interior paint
Floors throughout
Roof and sheeting
1/2 the siding 1/4 of the exterior trim and all exterior paint
All new windows and doors
All new electrical, 1/2 new plumbing (all new fixtures)
All interior trim and new dividing wall
Tile shower and backsplashes
New kitchen and appliances
Massive amount of garbage and demo and light landscaping (plus a shed removal)
I worked with and helped a new GC on this so I am not including his markup but it was small as he wanted me to show him how to approach this and we pretty much scheduled all the subs and gave him their info to use on his own projects. Future projects with the same GC are guaranteed profit lower margins plus other incentives.
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