Cost of full rehab of a house in Boston

[Marietou P.]

I am curious to know how much it costs to rehab houses in Boston. Let's say it is a 2500 sqft house 6b, 2b, 3 stories with a basement that could be finished into an additional apartment. The house would need a complete gut job. Finishes would be medium luxury with granite countertops, two more bathrooms so that there is one on each floor, laundry in the Unit, and either hardwood or laminate flooring. The top floor has bedrooms and an unfinished attic that takes up half of this floor that should be included. I am looking at something like this property: https://www.zillow.com/homedet...

I understand that it may be difficult to give a fair estimate, but I am curious to know how much investors in Boston are spending on complete gut renovations since I am starting and don't really know what ranges look like. I would love to hear about your experience in this area in general.