The most famous tool associated with this request is and the now-defunct "Live Edit" experimental mods. However, the current gold standard for breaking height limits is actually a workaround within "Better BuildBuy" (also by TwistedMexi) combined with manual INI edits.
The T.O.O.L. (Takes Objects Off Lot) mod by TwistedMexi is the primary way builders achieve the appearance of more floors. sims 4 more floors mod work
– Forcing extra levels via mods can break pathfinding, cameras, lighting, and stairs. It may also cause last exception errors or crashes. The most famous tool associated with this request