Celebes - How to design a 3-room house plan - Celebes - If you have actually more and moremore and more relative or various other needs that require more rooms, you might want to have more space. If your land is still sufficient to develop flat, you can develop a 2-room house plan with a home-grown system. Celebes - However, if your land is narrow and doesn't permit straight development, you might consider designing the development up and down. Therefore, from the very start of planning, you should have planned carefully the framework of a strong home building for feasible future development.