Do your diligence carefully,, I just completed an 800 SF addition to my home with me doing most of the work.. Soils engineering,, concrete forms,, concrete,, slab-on-grade,,framing,,windows+ doors,, roofing,, drywall and texture,, trim,, paint,,floor covering,,bath equipment,, plumbing,, electrical,,county inspections,,septic additions,,heating and air conditioning,,kitchen cabinets and counter top,, refridg,, stove,, ,,,,9 months and 70K later a place for my daughter to live with 1360 total SF and all the comforts of home...And I started with owning the property..>>>Dan ( You may OWN the property,, but THEY will tell you how you can use it..)