One of the first things I do when I obtain a property is save an EMPTY layout, so if I ever do exactly what you are asking its just a matter of applying that layout.
So if you don't have an empty layout you could get one from someone else, for the 20 ray transfer fee, or if you have another empty street to save an empty layout?
Other wise yes the only way to do it is one prop at a time. Be sure to do it from the prop list and not clicking each prop its self...will go faster that way.
Bee
Visit BeeLiCiOuS DeSiGnS GaLLeRy ~ vww://utherverse.vww/@58451/@1117173