"Costly damage" refers to something that causes a significant amount of expense or financial loss due to harm or destruction that has been caused. Full definition
Seven new cars turned in varying performances in 5 mph crash tests to assess how well their bumpers prevent costly damage in parking lot - type impacts. (iihs.org)
A good property manager will stay ahead of issues by being aware of potential problems and taking steps now to prevent costly damages in the future. (friscopropertymanagementinc.com)
You need to give the fuel room to expand, or it may go into areas it shouldn't and cause costly damage. (moneysense.ca)