Building add-on

This time we are looking on the crossword clue for: Building add-on.
it’s A 15 letters crossword puzzle definition. See the possibilities below.

Did you find what you needed?
We hope you did!. If you are still unsure with some definitions, don’t hesitate to search them here with our crossword solver.

Possible Answers: ELL, ANNEX, WING.

Last seen on: –USA Today Crossword – Nov 13 2022
Universal Crossword – Apr 15 2020
Newsday.com Crossword – Mar 6 2019
USA Today Crossword – Feb 16 2019
The Washington Post Crossword – Nov 26 2018
LA Times Crossword 26 Nov 18, Monday
LA Times Crossword 30 Oct 18, Tuesday