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|The Sims||The Sims 2||The Sims 3||The Sims 4|
Small houses can be frustrating to play with, especially with large families of Sims. On top of this, making additions to the house may not be practical or desired, due to lot size, desired architecture or aesthetics. Fortunately, from The Sims 2 onward, it is possible to build a basement under a house. In up-to-date versions of The Sims 3 and The Sims 4, basements can be built using a dedicated basement tool.
Unfortunately, unpatched versions of The Sims 3 and all versions of The Sims 2 lack a basement tool, but basements can still be created through the use of foundations. However, the process to construct basements is not explained in-game. As a result, some players may not understand how they are constructed. Fortunately, building basements is quite simple, and can be done to any pre-existing house on a foundation, or to any new construction.
Note that the images included in the tutorial below demonstrate building a basement in a new lot. The steps listed out for building a basement in a pre-built house versus a house being constructed should not differ, unless otherwise mentioned.
Be aware that the methods of construction outlined here will only work in The Sims 2 and The Sims 3. The Sims does not feature foundations or a basement tool, so it is not possible to build under the lower level of any lot. The Sims 4 handles foundations in a different manner than The Sims 2 or The Sims 3, so building basements using foundations is not possible in that game. Up-to-date versions of The Sims 3 allow construction of basements using the basement tool, but building basements using foundations is still possible.
Note that this tutorial details building basements using the foundation tool. As such, basements cannot be added to buildings without foundations with this method.
- Step 1 - Select your site
Ideally, Basements should be built on flat lots, though there are exceptions to this. For beginner builders, level out the lot before building the foundation.
- Step 2 - Lay down foundation
To start, lay down the foundation for the building, as you would if you were building a house without a basement. You can begin to build the above-ground portions of the building right now, or you can choose to wait until the basement is complete.
- Step 3 - Hollow out the foundation
Note that if you're adding a basement to a house, you may want to copy the floor tiles with the Eyedropper Tool, since removing the foundation will also remove the floors on top of it.
- Step 4 - Paint the foundation
- Step 5 - Start digging
- Step 6 - Level out the basement
- Step 7 - Remove the foundations around the basement
- Step 8 - Place walls down around the basement perimeter
- Step 9 - Rebuild the perimeter foundation
- Step 10 - Place stairs
- Step 11 - Finish the basement