Building has never been so intuitive in The Sims series as it is in The Sims 4. You're able to pick up ... have more space to decorate more in the water. From there, build the shape of the house ...
Eventually, you'll be given a prompt to water the tree ... waterfall and pond also exist here, creating a location that makes it easier to avoid other paid DLC in Sims 4 for this pre-existing ...