Once you complete the extreme home takeover quest you will be able to submit your house to the sims freeplay for a chance for all other players to be able to build it! This post will explain how to submit a house.
This is the house I will be submitting:
The first thing you need to do is send a sim to work as a real estate agent so the sign post appears at the front of your house, click on it and the option to submit the house will appear
This pop up will then appear:
Read the terms of service then click yes to submit your creation
This pop up will then appear once your house has been submitted:
And that is it! All you can do now is wait and see if your house has been chosen!
Your house will not be deleted when you submit it and you can submit as many houses as you want
You do not receive a notification or a reward if your house is chosen, you just have to keep checking the architect tab
This video shows me submitting one of my houses:
Thanks for reading!