Discussing his upcoming BBC One programme John Barrowman - The Making Of Me with The Guardian, the actor divulged that he and partner Scott Gill want to fill their new home in Cardiff with kids.
"We're building a house in Cardiff on the beach. We're going to have six bedrooms in it and we feel like we've got a lot to offer.
"A family unit is what you make a family unit."
The Making Of Me sees Barrowman argue with a religious "ex-gay" man who does not believe that homosexuals can lead a traditional home life.
The Torchwood star said: "His idea was that you had to have the white picket fence and the farm and he was talking about it like it was something that I could never have.
"And I actually said to him 'Yeah, but I have a partner, I have a dog, I have really nice cars, I have a beautiful home, I have a home by the sea and the beach. You can have that and be gay'. But he just couldn't see that."