“A major thing that someone can easily take on is purchasing their own materials, equipment, and appliances,” said Greg Merkel, an architect who oversaw a home renovation with his wife Catalina Rojas, also trained as an architect. Tiles, cabinetry, bathroom and kitchen fixtures, doors—there are a number of materials you can pick yourself or salvage from antique stores and flea markets.

https://www.curbed.com/platform/amp/2016/5/2/11459072/diy-renovating-professional-contractor