I had a couple office spaces built out. While we used cubicles for odd spaces (no light/no sprinkler) we tried to use built offices as much as possible. Because it was much, much cheaper. Hundreds of dollars instead of thousands.

You can always double-up in a 10X12 office if you grow. And until then, its very nice. And cheap.

One former employer doubled up but only if the parties were opposite "early bird" vs "night owl". My officemate left work at 2 every afternoon to pick up the kids (even in the summer, whatever), then VPNed in from home, and I abused flex time to a level of almost working 2nd shift, so we each had nearly private offices for at least half the work day. It was a small office, couldn't have been more than 10 ft on a side, but remember we didn't need endless collaboration and meeting spaces because we had offices, so the net real estate used was less than cubes or open offices. Also it was cheaper because cubes or open offices falling apart is just being cheap, but a 150 year old building falling apart is financially valuable "character"

Flex time with small group office is nearly ideal. I can spend hours a day with the door closed concentrating or meeting, or hours a day working as a team, it just seems ideal.

Its like the difference between college dorm life with a roommate or two, vs military barracks grid array of 50 beds packed together.

>> so we each had nearly private offices for at least half the work day

The problem is someone noticing that and then sticking 4 people in your office.