I assume you've also checked out the USGBC's LEED rating system selection policy, which can be found here?
While I don't have experience with your situation, this would suggest to me that LEED-NC would be more suitable for this situation than LEED for Homes.
Any other thoughts on why this would or would not work?

So, the point of this table is to orient the reviewer of the project - to give them a good overview of the space types within the building. There are a few credits where space types matter - such as daylighting for schools - and you should be careful to separate out spaces that will pertain to those prereqs/credits. Otherwise, you should just use your best judgement in painting an accurate picture for the reviewer without over-burdening yourself by calling out too many rooms that could be grouped together.
In response to the second question about circulation space, those can be considered ancillary/non-regularly occupied or not - we allowed for flexibility here.

Hi Brad, it's not clear to me why you don't think you are meeting the requirements as is. Do the vehicles not qualify as low-emitting/fuel-efficient? The SSc4.3 credit language, for the U.S. version of LEED-NC, at least, only requires you provide these vehicles. It doesn't say you have to purchase them.
Let's take this conversation over to the forum on the LEED-NC SSc4.3 page, by the way, where there are more resources on how to meet this credit.

Announced today by USGBC—the launch date for LEED for Neighborhood Developments is April 29th!
Launch will occur "with two media events in Chicago, Ill. and Washington, D.C.  Political, business and nonprofit leaders, as well as urban planning experts from around the country will attend the celebration."

Any luck on the circulation space question? I'm running into this same problem right now. Perhaps these would only include exit passageways or other areas that must only be used for circulation?

Confusing indeed.

Apologies! I meant to add that the ND launch is expected in late spring. Unfortunately, there isn't a firm date yet, but we're working hard to make it happen as soon as possible. If you're part of a pilot project, I would recommend you get in touch with your USGBC contact if you have specific questions surrounding the launch.

these should be released at launch

Hi Kash, welcome to LEEDuser—it's good to have you!
It's probably best to think of LEED-EBOM v2009 as a completely new rating system compared with LEED-NC v2.2. There are a number of credits that have similar requirements, and if you documented them for LEED-NC v2.2, you'll have a head start on LEED-EBOM, but in all cases you will have to complete new documentation. For better or for worse!

I understand if a transient is coming one hour per day like the example above, but what if they are only coming once a week and working 8 hours? How is that calculated?

And does two part time employees that are in the office three days a week, just count as two people toward the FTE?

And what do summer interns count as?

Thanks so much for your help!
Amy