How to 'rough estimate' the rehab (e.g. $/sq.ft) ?

[George P.]

Will meet with the contractor later this week, but wondering if there is a rule of thumb to guesstimate the rehab costs ?

Area: MD (Howard Co)

Details: 4/2/2 1,900 sq ft (above ground) and 400 finished basement SFH, built in 1985. Its a listed REO.

Needed: roof, new kitchen, all baths (2 full, 2 halfs), hardwood installed, HVAC system, driveway, water heater (tankless), interior doors, windows and window treatments, garage door openers, attic insulation etc - pretty much everything inside. Original owner was getting sick and let the property deteriorate)...

Ideally I would like to open the walls, too and dry-wall from scratch - there is the old house smell and most importantly I would like to make sure whats behind the walls looks kosher.

And I would also need to fill the in-ground pool cause its deteriorated to the point of no return.

Any ideas as to how quickly rough-estimate this rehab? I am thinking around 100k? Is that too low or too high?