Husband as first time home buyer

I’ve been reading the laws around this for a while and I’d like to know if anyone sees a flaw in my understanding because of course we don’t want to break them.

My clients were married in 2017. She owned her previous home in SK, which is now a rental. She lived there until 2017; so, she obviously doesn’t qualify.

He never lived in this house. He’s always lived in MB and was a renter until they purchased a house together in 2018. I don’t see anything that disqualifies him from claiming the entire $5000 credit on his return. I didn’t do the 2018 return, but would adjust it for him.