Working together in one space has immeasurable advantages.
Advantages:
Disadvantages: * Takes time to find a space.
* Locks you into a large ongoing expenditure. * Large expenditures upfront lead to early capital investment needs, and reciprocal release of stock. Possibly too early.
If you do feel that working in your living room/remotely/after hours/with your new born kid|girlfriend's music in the next room is getting tiring, consider the following next step first:
It's not flash, but apartments are cheaper than offices. They have cable modems, a fridge, and the leases are easier to end than office leases.
What more could you want?