In 2014, Sothea designed the renovation of a second apartment on Street 110, near Phnom Penh's Old Market (Psar Chaas). The homeowner, who had purchased two adjacent apartments, sought to transform them along with their upstairs roof access into a single two-level residence.

Although the project's construction has not yet commenced, designs for the complete floor plans were finished in 2014. The homeowner asked Sothea to design a complete unit on one floor, as a separate residence within the apartment. The plans for that unit are shown here:

Sothea incorporated original details of the two apartments even as he knocked down some walls to create a single unit. The living room's ceiling beams, the bedroom tiles, and a small terrace were features of the original apartments, and Sothea retained and expanded on them in his designs for a more contemporary space.