I've been having a lot of fun with my current sim family. They are the Younces. I have no idea how I came up with that last name, but I did. Anyway, in the beginning it was Patricia and Barbara. Then their family grew to having Patricia's new husband. Three people were alright in the house that they currently had.
While out in the garden Barbara became a PlantSim. My first PlantSim too! Well, while fooling around with her she produced a spore! Four people in their current house was a stretch. Especially since I was planning on turning both PlantSims back into regular Sims but they needed their own beds (PlantSims don't sleep! Fun fact!).
I checked to see how much money they had as a household ($90k!) and off to make a big house. I made this house:

Keeping my eye on the cost of the house and not furnishing kept costs down. They were able to move into the house with about 7k to buy the essentials. Right now they have finished the kitchen and began working on the downstairs bathroom. I haven't taken screenies of that though! I will tonight! So this was my first seriously made house that I spent a long time on. I think it looks nice.