This was a custom piece that the designer originally wanted to put a sofa in the center or a day bed. That's when we discussed the possibility of making a built-in daybed with trundle. The unit was a lot of fun to create. The unit also was to match the style of an existing office bookcase located opposite this unit with a beaded frame and inset doors. If you are in Southern California, feel free to call us for an estimate and/or an in-home design consultation. But pricing could range on average $500.00-700.00 per foot for woodworking only (no mattresses) and up for custom work as a rough guage. Pricing varies greatly depending on a number of factors such as experience, workmanship, materials, shop rates, finishing, type of shop machinery, location, overhead, insurance, and details of how it's built. There's a lot of different ways to build something and so that's another reason pricing have such a large range.