When you're selling a flip, there are three simple things you can do to make sure it's as valuable as possible. 3 Simple Ways to Boost a House's Resale Value Bathroom Boost Install granite countertops and add a new faucet and mirror. Total cost: Under $500 when you buy supplies at a home improvement store and perform the work yourself. Time investment: 2 to 3 days Brighten the Living Room Use halogen track lighting with movable lamps to create a classy, simple solution. Total cost: About $150 for a basic track lighting kit. Time investment: 2 to 3 hours if