Buy your own materials
15 to 25% on materialsContractor markup on board, mud, tape, and screws runs 15 to 25 percent. On a 1,000 sqft job, this is $100 to $200 you can keep by sourcing yourself. Confirm with the contractor before ordering. Some prefer to supply for quality control reasons, but most will give you a labour-only quote on request. Have materials delivered into the rooms where they'll be used, not just dropped at the kerb. Stack neatly so the crew doesn't lose time hunting for sheets.