Interesting this was a "no hugging" episode (I can't recall any other episodes in which there was absolutely no physical contact between David and any of the family members).
I also thought David was unusually...subdued? There wasn't much banter between David and the real estate agent, or David and the family, as there usually is, IMO.
At the beginning of the episode, David mentioned their needing a bedroom for their 16 year old son (who we never saw), and the mother nixed ranch style homes because her son needed his own space (I'm confused as to why a single story house would preclude that, but whatever). But IIRC, not once, in any of the houses, did David point to a bedroom and say "This would be the perfect bedroom for your son" - which he has done in previous episodes when a bedroom/living space for a family member has been part of the criteria for the new home. As a matter of fact, all of the house tours seemed cursory to me.
And, with the exception of David suggesting replacing the countertops in the first home, I don't recall David making any other decorating/reno suggestions for the homes at all.
The husband and older son appeared disengaged from the entire process; for example, going downstairs to watch TV in the first home (a TV that wasn't turned on).
IDK, the entire episode just seemed a bit "off" to me!