No. At least not in my mind, not in the mind of my real estate attorneys, and not in the mind of my E&O insurance provider.
Estimating the age would be, “It’s about 5 years old.”
Estimating the remaining years would be, “It’s got about 5 years left.”
I’ve seen those types of statements waaaaaaay too much, particularly in roofing lawsuits.
Using the tell-tale clues that roofing contractors use (and which I learned in Texas when I was doing roofs), one can state that the roof is at the midpoint of its useful life regardless of whether the roof is a 5-year roof, a 10-year roof, a 20-year roof, or a 40-year roof. Now when one finds a 2-year-old roof that is “at the end of its useful life,” it really doesn’t make any different how old the roof is (2 years); it is at the end of its useful life. So what purpose would it serve to state that “The roof is 2 years old” and has “3 years” remaining for its 5-year warranty if it is “at the end of its useful life”?