I was driving through Dallas the other day with a client and we were talking about how new developments these days are more dense and involve multiple uses - office, retail, apartments - all in the same project. These developments are much more dense than in past years. This has typically definied the central part of cities and when you think of the greatest cities in the world, they are always quite dense - New York, Hong Kong, London, etc.
Density seemed to be viewed as a bad thing by most cities in the US though - at least in the suburbs. But that is changing as people demand services within walking distance of their homes or places of business. Most of these developments balance out the density with green space, ponds or other open gathering areas. This provides a place to meet friends, play, and relax.
What's interesting is that density is happening inside as well. For the last couple of decades, companies have been putting more people in smaller space. The average square footage per average worker in 1994 was 90-115 square feet (SF). Managers had about 151 SF each. Today those numbers have dropped to 75-95 SF for average workers and 120 SF for managers.
But these companies often create more meeting space, break areas and other open areas within the office where collaborative work can be done. One of my clients is a tenant in Plano has the typical conference room, but they also added a conversation pit. This room is where the "corner office" would otherwise be and it has a faux fireplace, leather overstuffed chairs, side tables and a big coffee table in the middle. It's a great room to enjoy with co-workers or clients without the behemoth table in the way.
Design should reflect the company's personality. This includes the design of the development in which the office is located and the design inside the space itself. Density plays a roll in that as well.