Technology has had a meaningful impact on the renovation process, increasing the significance and strength of the planning stage. The availability of free online design tools has improved visualization of the changes, at a fraction of the cost of hiring a professional interior designer. The decision regarding changes is also influenced by the purpose of renovation. In case of a so-called "fix-and-flip" (repair and resell) objective, an ROI (return on investment) can result from changes to fix a structural issue or design flow yield or to use light and color to make rooms appear more spacious.