My 2.5 yo son got this for Christmas. Our local doctor has something similar and I had noticed he seemed very engaged by it.
He was immediately very interested and mimics different things that happenaround our house such as minding the baby, putting people to bed, going on the swing and plenty that doesn't such as putting a helipad on the roof for his helicoptor!
It's a lovely set adn you get a lot of different peices for your money. He plays with these separate and with other toys, feeding the bread to his animals for example.
Certainly, he cannot not construct it yet himself. And I notice the instructions only cover one type of construction but there are clearly at least two others pictured on the box. In any case, really, it is only your imagination which would limit what you build! After building the suggested construction it seems to me to be a bit too closed in to allow play to progress freely. We only built it that way once.
All in all, a great toy for any gender. I'm sure his sister will love it in time too!