refurbishment
US /ˌriːˈfɝː.bɪʃ.mənt/
UK /ˌriːˈfɝː.bɪʃ.mənt/

1.
the renovation and redecoration of something, especially a building
:
•
The hotel underwent a major refurbishment last year.
•
The office refurbishment project is expected to be completed next month.