The extension The Sims 4 For Rent comes with several new cheat codes, including one that will no doubt be of interest to you, which allows you to lift the restriction on the number of dwellings per plot. Here are a few codes to try out:
Triche More than 6 dwellings per plot
- bb.increaseRentalUnitcap on/off Deactivates the 6-unit limit per lot. You are still limited to 100 dwellings per safeguard.
Sims 4 A Louer Career Cheat Sheet
- careers.promote PartTime_Handyperson : Gives a promotion in the career Sims 4 from Sim à tout faire

Character trait cheat codes
- traits.equip_trait trait_ChildoftheSea Adds the Village Child trait to the Sim
- traits.equip_trait trait_Cringe Adds the Annoying trait to the Sim
- traits.equip_trait trait_Generous : Adds the Generous trait to the Sim
- traits.equip_trait trait_Nosy Adds the Indiscreet trait to the Sim
- traits.equip_trait trait_Wise Adds the Sage trait to the Sim

Sims 4 Fears Code For Rent
- traits.equip_trait trait_Fear_Eviction Adds the fear of deportation to a Sim