I'm going to need to put two or three servers in a datacentre somewhere and unfortunately can't be there. What is the procedure of hiring remote hands to the install for you? Also will probably want an ongoing support contract with them.
If you have a data centre in mind, contact them. They likely have a managed rack service
What geographic area are you looking for?
Give thought on how you'll setup (secure) out-of-band management network which can provide a "get out of jail" option. That could be HP iLO / Dell iDRAC (etc) remote server management, APC PDU with remote power cycling etc. If you regularly need remote hands, you're doing something wrong!
Why not just go cloud?