Ooooh-la-la! That swimming pool is stunning and looks very inviting too. And I adore these modern houses. Gorgeous build!

YAY! I'm glad you like it

Can you tell me please more about a 1-tile stairs and no-slope basement.

Hi Grammapat
The 1-click stairs are made with Mootilda's Grid-adjuster, and must use HL's SimplePassageModularStairs (which have a script file - so be sure you follow the link and install the stairs properly) These stairs are the only way sims can get inside/up on the foundation.

No-slope basements are also created with Moo's Grid-adjuster. It is just a way of making a basement without the wasted space around the perimeter that happens with a traditional (dug out) basement. No-slope basements also do not distort the neighborhood terrain, so your hood will not look like it has sinkholes around houses with basements.

Also good to note - 2-click foundations don't need any special stairs to get inside. Unmodded basegame stairs will work just fine. EXCEPT for big dogs. They cannot access 2-or 3-click foundations unless HL's SimplePassage stairs are used. *silly EAxis*

I wrote up a tutorial on how to use the Grid Adjuster to make 1-and-2-click foundations and no-slope basements, it might be of help if you want to learn to use the tool?

Good luck

Just wonderful!

Thank you!