Our furniture is fully bespoke so we can usually adjust not only the size, but also the design, materials and hardware to your requirements.
We made and installed a modifier to the wall in the window area for shutters to fit against, which enabled sufficient depth for the wardrobe, here adding about 10cm
Our wardrobes are vented and bases can be lifted enabling plumbers and electricians to access the floor below. It also makes installation easier on top of our levelling frame.