On Tuesday morning, the answer was a clear yes. But by the afternoon, it was a qualified no.

Then on Wednesday, it was a qualified yes.

The confusion started with No13 on the NSW government's list of 16 "reasonable excuses" for being out of your house.

Number 13 read "for children who do not live in the same household as their parents or siblings or one of their parents or siblings - continuing existing arrangements for access to, and contact between, parents and children or siblings".

Many adult children took that as being a green light to go and visit mum and dad.

But advice from the Premier's office on Tuesday afternoon stated that No13 referred to children of divorced parents.

Those adult children caring for their parents were covered, but that didn't extend to those just visiting, the Premier's office said.

However, on Wednesday, when asked whether people could visit a partner who lived in a different house, NSW Police Commissioner Mick Fuller said yes.

"I would put that under care, absolutely," Commissioner Fuller said.

"Mental health, I get it. That's absolutely under care. But don't take your whole family with you. Don't take your grandparents."

Given the police are in charge of enforcement, that suggests a visit to mum and dad is okay.