In this episode, Jenas asked whether can the developer not build a certain wall in the house she bought since she wants to tear down the wall later. It saves time and money for both parties.  The answer is NO. The developer cannot do that before handing over the unit to her because they are legally tied to the building plans that they submitted. And in the agreed SPA, the floor plans are exactly the same as the approved building plans drawings. Hence, it means it would be a breach of contact if the developer build one wall less.  Also, developers would not want to have customization to every single unit. Just imagine 300 different unit owners customizing their floor plans during construction... that will cause a lot of confusion and communication work between the developer and the main contractors.