build out onto
build out onto (something)
To expand or extend a structure or building into a certain area. Our neighbors had to get a permit to build out onto the undeveloped tract behind their house.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
build out onto something
to extend a building onto a particular space. We can build out onto the adjacent lot after we purchase it. We built out onto the area over the old patio.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.