* Home Renovation Projects With The Best ROI. The top five projects to prioritize when it comes to the best return on investments are: replacing the entry door, installing a new fireplace, remodeling the kitchen, converting the attic into a bedroom, and replacing the exterior siding. When it comes to house sales and particular rooms, the kitchen is often the room that will make or break a sale. Kitchen projects that are budgeted between 6 - 10 percent of the total home value will see the highest ROI. Putting your finances into kitchen upgrades is a worthwhile endeavor when it comes to optimizing your home for selling purposes.