I believe when you noted "replacement cost" you may be looking at rebuild or renovation or appraised valuation. This value greatly varies dependent upon materials desired, or allowable via an insurer. If you were concentrating on design to build, the price would encompass entire structural specs, including but not limited to foundation, framing, roofs. This method would be correlated with new construction prices in the Exton area at approximately $125 to $175/sf averages; however if you elevate your amenities to include such items as marble bathrooms, hand scraped solid plank flooring, $150,000 cherry kitchen, the per sf price could easily surpass $200/sf. If you are simply renovating within a structure, the price would be about one-third. For instance, a common factor for finished basements including heating, plumbing and electric, finished walls, drop ceilings and tiled floors runs about $40-$70/sf. However, without measurements, specs and even a general plan or similar plan, we can not determine a price for you. If you wish to further pursue replacement cost, I also own a general contracting firm and builder supply direct house, in addition to my licensure as a 34 year veteran Penna. Real Estate Associate Broker with Coldwell Banker Preferred. Any and all inquiries can be directed to me via my website at http://www.cbpref.com/dseibert
or email email@example.com. Market Analysis and an initial consult are free. If you need a full appraisal for insurance or legal reasons, I will be glad to refer you to local appraisers.