If you are taking steps toward improving your facilities, why not go for LEED Certification? LEED is going to provide you with an objective, recognizable, and marketable stamp of approval that says your building meets high quality environmental standards, guaranteed.
The items we have discussed in the preceeding pages (from commissioning to occupant comfort and more) are all aspects of the LEED for Existing Buildings ("EB") system. If you say that you want your existing building LEED Certified, what you are saying is that you want to let people know you have the highest quality building and you want to have that satisfaction for yourself - to know that you are doing all you can for the environment. There are also financial incentives to doing this.
What we recommend, is if you are interested in "greening" your facilities, then go all the way and go for LEED Certification. Shoot for the highest. Make your building the best it can be.