- Next Phase Design is a top interior design company in Singapore that prides itself to be artful, skilled and customer centric. We possess the capabilities of interior design strength to provide development and handle homes, offices, retail stores and landed house tear-downs in Singapore. Our designers blend beauty with functional layouts to make all the projects value-adding and comfortable. Taking pride in a legacy of quality, Next Phase Design aids you to reinvent your space, stylishly and with purpose.