It was the negotiator in him. The way he had trained himself to notice the little personal details of whoever he was trying to make a deal with. The way Dora and Chris spoke to one another, the way she touched his arm. So while he kept a pleasantly neutral look to his face, he was smiling quite a bit more inside as he looked over the house.
It was a nice enough old barn. Bigger inside than the Summerby estate outside of Boxworth, although with considerably less land. And since it was to be a place firmly rooted in the wizarding world, Chris wouldn't have the problems Rich and his father had getting modern electrical and plumbing into the old building they'd bought along the Thames. There were various charms and spells he knew of - even if he didn't know how to do them himself - that could be used to maintain, reinforce, even child-proof an old house like this. And a little creative use of wizarding space enhancements would make up for some of the smaller rooms.
Taking advantage of his height to see over the others in their little group, he stayed near the rear of the entourage and listened to what the realtor had to say. Dora knew his penchant for real estate; she could as his opinion if she was of a mind to.