An average full-home renovation in NYC will cost between $100-200 per square foot. A gut renovation will start at the higher end of the $100-$200 psf range. “Wet spaces” with plumbing have higher gut costs: kitchens will cost, on average, $300 per square foot, and bathrooms, $400 psf. Gut renovating dry spaces without plumbing will cost between $30–$50 psf.