House Remodeling Costs Calculator Remodel Calculator estimates remodeling and house renovation cost near you. Calculate the cost of remodeling a bathroom, kitchen, flooring, painting, windows, siding, roofing, and many other projects. Price estimates to gut and remodel existing vs. historic vs. new construction homes. Remodeling costs are based on house size (square feet) and project complexity, and include basic, average and high-end finish levels.