If house-hunting online, floor plans provide more detailed information than only photos. When requesting showings, they can eliminate ones that clearly do not suit (based on information found on plans). Make buying decisions easier, faster when listing sheet or online listing has more information to remind them of what they saw. Gives them a place to lay out their furnishings - more than just picturing it there. Reduce number of return trips (saving you time and money) to see house again - whether to remind themselves of something or to have their partner see. If coming from out of town, on a time crunch, can make list of showings more productive. Floor plans are to scale; can be used to plan/estimate new flooring, etc. – other renovations required.