The phrase "dollar renovation" refers to making various improvements or changes to something without spending much money, usually using inexpensive or budget-friendly materials and methods. Full definition
Featuring 172 guestrooms, 30,000 square feet of meeting and event space, the hotel underwent a multi-million dollar renovation in 2016. (historichotels.org)
So what would a multi-million dollar renovation look like? (relevantmagazine.com)
The 205 room resort was built more than 50 years ago and recently underwent a multi-million dollar renovation. (urbanblisslife.com)