turn things

To rotate objects in Build/Buy mode, you can follow these steps: 

To rotate items on console:

1. Open Build Mode.
2. Select the object you want to place. 
3. Press R1/RB to rotate an object clockwise, or R2/LB to rotate an object counter-clockwise.
4. To place it, let go of R1/RB and R2/LB when the object is facing the direction you want.
   
   

To rotate items on Mac:

1. Open Build Mode.
2. Select the object you want to place. 
3. With the object selected, use the period key to rotate clockwise, or the comma key to rotate anti-clockwise. This will rotate the object 45°.
4. Click the left mouse button to place the object. 
   
   

To rotate items on PC:

1. Open Build Mode.
2. Select the object you want to place. 
3. With the object selected, use the period key to rotate clockwise, or the comma key to rotate counter-clockwise. This will rotate the object 45°.
4. Left-click to place the object.
   
   

If you're using The Sims 3 camera option on PC, you'll follow these steps instead:

1. Open Build Mode.
2. Select the object you want to place. 
3. Using the mouse, left-click and hold the object.
4. While holding with the mouse, use the period and comma keys to rotate the object.
5. Let go of the left mouse button when the object is facing the direction you want. 

For full details on rotating items, see the Official EA Guide: Rotate Objects in The Sims 4.