What's your practice/will you be doing in the space and what special requirements do you have?
Please include things like lighting needs, noise levels (whether you'd like to keep it out or in), if you need 3-phase power, ground level access, a 'messier' workshop space or an 'tidier' office-y space, and anything else you can think of! We're asking this so we can try to meet your requirements, not exclude you because of them :)