This particular desk is made by the designer. It is probably a custom piece, so you can contact her through her professional profile if you would like one as well.

Have you considered an office armoire such as those from Room and Board?
http://www.roomandboard.com/rnb/subcategory/list.do?catalog=room&category=rm_office&subcategory=wks_armoire

Hi, my name is Adrienne and the company I work for designs and installs custom home organization solutions such as the one shown above. Check out http://www.TheStowCompany.com and feel free to reach out to me if you have any questions.

Where does the desk portion go? does it extend into the wall? Or do you take the board off?

Miss Stow Company, it is inappropriate to advertise on my page. You have turned me off from referring to your company for others.

Never-the-less, in answer to the first question; This is custom and I either design the space underneath for additional leg space or storage of office supplies. We are custom and you can find other great cabinet makers in your area to consult for something similar. Like other good cabinet makers, we are generally of a much higher quality to the pre-fab module desks and such found in the add above. You want to be careful who you invest your money in. Thank you.