Are you guys talking about detailing cars that belong to people that work in a building?
If so, I think that is a great idea!
You could have a few or a few dozen people in an office building that will want their cars detailed after bad weather, for the weekends, for parties, holidays, etc...
The best part is that you are on-site and can take care of them right there.
Who knows, you might get a few buildings for Friday so people have their cars ready for the weekend.
This is not a bad idea, just have to send out a lot of flyers, get permission from the property owner, etc.....
If any one has heard of BNI ( bussiness networks international) I am in a very similar group called power leads. I was kind of in a lull for referrals so I asked for express detailing for the fallowing week right during the meeting. I ended up doing 6. and of coarse I didnt get to them all during the one hour meeting but it was very easy to sell. the ones I did right there were kinda fun.