Website resource for renovations with costs

Does anyone know of a solid resource for renovation before/afters with costs? I know Apartment Therapy does some, but they're more room specific and small-scale (like a kitchen for 10k or a hallway for 5k,) but I'm struggling to find a gallery type of listing that include costs for the city or any major urban area. We are trying to scope out a VERY GENERAL cost for a building renovation (yes, I know lots of unexpected things come up, inspections reveal issues, roofs need to be replaced, etc etc) and it's proving to be quite difficult! Aside from scouring pinterest (yuck) does anyone know of any resources?