How to add a SIM card to a household

Creating households and having Sims join them is an integral part of playing with families in The Sims 4. Adding a sim to your household can be done in several ways in The Sims 4read on for an overview of all the methods, including tips, gameplay, and the roommate system.

Sims 4: Merge Households

You can merge a SIM card unrelated to your household by playing with your active household and opening the gallery button during gameplay. Browse the gallery or your library and select the SIM card you want to add. Then tap the “Place Household” button at the bottom right of the SIM card profile window and a pop-up will trigger asking if you want to merge households. Confirm this and the new SIM card will automatically be added to your active household.

Sims 4: Asking a Sim to Join the Household

Sims 4: Ask a sim friend to join the household

You can add a sim to your household more naturally through gameplay. Simply get to know the sim in question and increase the friendship meter right after halfway through to unlock the “Ask to Join Household” friendly interaction. The household merge screen will then appear, allowing you to transfer funds and sims between households.

A simple way to get friendship points and unlock this interaction is to take photos of the target simulation repeatedly. It quickly raises the friendship bar with little effort. Cloud gazing (an interaction that arrived with the Outdoor Retreat pack) will also quickly raise the friendship bar.

Thinking of joining hostels to start a family? Read our guide on how to have twins in The Sims 4.

Sims 4: Ask to be a roommate

The Sims 4: Explore College

With The Sims 4: Explore College pack came the ability to assign roommates. The difference is that roommates operate on their own and are not controlled by you.

To find a roommate with this pack, you need to post an ad via desktop or mobile and wait for random sims to show up in the next few days. You can then choose to accept or reject their application to be your roommate.

You can only post an ad for a roommate if the game registers that you have room for one in your house, this means you must have at least one extra bed for them.

Sims 4: Add Sim Through Cheats

Add sim to household through cheats

If you’d rather ignore the gameplay altogether, you can just fool a sim in your family. If you see a sim in the wild that you want to add, you must first enable cheats in your game. To do this on PC, type CTRL + Shift + C (Command + Shift + C for mac) or press the four triggers if on one console.

Then type: testingcheats true

Now just hold down the Shift key and right-click on the SIM card of your choice, “Add to Family” option will appear. Click on it and the SIM card will automatically be added to your household.

You can also change your friendship level with another sim through hints. The cheat for this is alter the relationship [full name of first sim] [full name of second sim] [number] friendship_main

This cheat will spawn a random sim in-game that already has a high friendship bar with you:


  • For more Sims 4 tips, read our guide to Sims 4 career tips to climb the corporate ladder in seconds.

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