You add a new Sim to your household through the household management menu, either by creating one from scratch or moving an existing Sim into your current home

The fastest way is to open your household panel while playing, click the plus icon next to your Sims' names, and choose "Add a Sim". You can then either build a new Sim using the full character creator or select a pre-made Sim from the game's library. If you want to move a Sim you've already created in a different household into your current one, you'll use the same menu but select "Manage Households" instead, which lets you transfer Sims between homes.

The method you choose depends on whether you want a brand-new character or you're bringing someone you've already designed into the game. Both paths take roughly the same amount of time — about five to ten minutes if you're using a pre-made Sim, longer if you're customizing appearance and traits from the start.

Key Takeaways

  • Open the household panel during gameplay and click the plus icon to add a Sim directly to your current home without leaving the game.
  • You can create a completely new Sim, use a pre-made Sim from the game's library, or import a Sim you've already built in another household.
  • Adding a Sim costs household funds if you're using the in-game "Add Sim" option, though the cost is usually between 100 and 500 Simoleons depending on the Sim's traits and skills.
  • If you want to add a Sim without spending money, you can use "Manage Households" to move an existing Sim from another household into your current one for free.

Adding a Sim directly to your current household

While you're playing, press Escape to open the menu, then select "Household" from the options. You'll see your current Sims listed with a plus icon next to their names. Click that plus icon and choose "Add a Sim". The game will open the character creator, where you can either design a new Sim from scratch or select one of the pre-made Sims the game provides.

If you're building from scratch, you'll set their appearance, name, traits, and aspirations. If you choose a pre-made Sim, you can use them as-is or edit their appearance and personality before confirming. Once you click "Confirm", the new Sim appears in your household and the cost is deducted from your household funds.

This method works best when you want to add someone when ready without interrupting your game for long. The new Sim will have no job, no skills, and no relationships with other Sims unless you set them up that way in the character creator.

Moving an existing Sim from another household

If you've already created a Sim in a different household and want to bring them into your current game, go to the main menu (not the in-game menu) and select "Manage Households". Find the household that contains the Sim you want to move, open it, and click on that Sim. You'll see an option to move them to another household — select your current household from the list.

This method is free and preserves all of the Sim's skills, relationships, and history. It's the best choice if you've spent time building up a Sim's career or relationships in another household and want to bring them into your main game without losing that progress.

The downside is that you have to leave your current game to access the household manager, so you'll lose your place in gameplay. Save your game before switching households if you want to return to exactly where you left off.

Understanding household size limits and costs

Most households in The Sims 4 can hold up to eight Sims at once. If you're already at the limit, you'll need to move a Sim out or delete them before you can add another one. You can check your current household size by opening the household panel during gameplay.

Adding a Sim through the in-game menu costs Simoleons — the amount varies based on the Sim's traits and skills, but typically ranges from 100 to 500. If you're playing on a tight budget, moving a Sim from another household (which is free) is a better option than creating a new one.

What happens after you add a new Sim

Once a new Sim joins your household, they'll appear in your home with basic needs like hunger, energy, and bladder. They won't have a job unless you send them to work, and they won't have relationships with other Sims unless you build those through gameplay or set them up in the character creator before confirming.

If you added them through the character creator, you can assign them a bed, set up their room, and start building their skills and relationships right away. If you moved them from another household, they'll keep whatever skills and relationships they had in their previous home.

New Sims start with no money of their own — they share the household funds with everyone else in the home. This means adding multiple Sims can drain your household budget quickly if you're not careful about jobs and income.

Using the "Manage Households" menu for more control

The "Manage Households" option in the main menu gives you more flexibility than adding a Sim during gameplay. From there, you can move Sims between households, split households, merge households, or delete Sims entirely. You can also edit a Sim's appearance, traits, and relationships before bringing them into your current household.

This is the best place to go if you want to set up complex family structures or bring in multiple Sims at once. You can also use it to create a "Sim bank" — a separate household where you store pre-made Sims that you can move into your main game whenever you want.

Common reasons adding a Sim doesn't work

If you can't find the plus icon to add a Sim, check that you're in the household menu and not another menu. The icon should appear next to your Sims' names on the left side of the screen. If your household is full (eight Sims), you won't be able to add another one until you move someone out.

If you're trying to move a Sim from another household and can't find them, make sure you're in the "Manage Households" menu in the main game menu, not the in-game household panel. These are two different screens, and only the main menu version lets you move Sims between households.

If the game won't let you confirm a new Sim, check that you've given them a name and selected at least one trait. The character creator won't let you finish without these basic details.

Frequently Asked Questions

Can I add a Sim to my household if I'm in the middle of playing?

Yes. Open the menu during gameplay, go to "Household", and click the plus icon. You can add a Sim without saving or leaving your current game. The new Sim will appear in your home when ready, though you may need to assign them a bed or move them to a room if your house is crowded.

What's the difference between adding a Sim and moving a Sim?

Adding a Sim creates a new character and costs Simoleons. Moving a Sim transfers an existing Sim from another household and costs nothing. Moving also preserves all their skills, relationships, and history, while adding a new Sim starts them from scratch.

Do new Sims start with any money?

No. New Sims have no personal funds — they share the household budget with everyone else. If you want a new Sim to have spending money, you'll need to give them a job or use cheats to add funds to the household.

Can I add a Sim if my household is already full?

No. The limit is eight Sims per household. You'll need to move one out, delete one, or split the household before you can add another. You can check your current household size in the household panel during gameplay.

How do I add a Sim I created in a different save file?

Go to the main menu, select "Manage Households", find the household with the Sim you want, and use the move option to transfer them to your current household. This preserves all their traits, skills, and relationships from their previous home.