Even though I REALLY seriously thought about doing this for years, I'll keep my mouth shut and try not to go into "fine details"
GPS has a good point, but I like to detail my crap cars once a year or so. Problem is, it's really hard to find the time to do it.
If I worked at an office w/lots of cars on the lot, and could nitpick co-workers completed, talk to the guys and ask them what to expect, watch them work, etc., I'd totally consider it. I would not, however, let anyone touch my NEW car. That said, I would be your minority in an office environment.
I would not call someone to come to my house, and I think you'd find that a lot.
Here I go with the details
You can stop listening if you'd like.
It's incredibly brutal work. My back is PERMANENTLY berkeleyed from working at a carwash for a couple years in college...and I mean berkeleyed with a capital "F" ... or "B" or whatever.
I'm sure you've considered the fact that you will have zero work in the winter. That was the majority of the deal-breaker for me.
There was a group of dudes who came to an office parked I worked in a million years ago. They did good work. One nice touch was that they shot the wheel wells with a little flat black. That was pretty impressive to me.
If I'm paying someone to DETAIL my car, that mother berkeleyer had better be DETAILED. There is no detail job that's completed in less than an hour. I don't care how many monkeys are tearing into it. I've been really, really disappointed with the last two places who detailed my integra, even after SPECIFICALLY telling them what I expected and that I'd be happy to pay more if necessary to have it done right. Dust on the vents (that's what q-tips are for,) marks on plastic parts where they got lazy and used the buffer on the a-pillar (that's what your hand is for,) etc., these things are unacceptable from a DETAILER, IMO.