If I were building a house, I would probably build my own RF transmission pass-thru box to suit my needs. I may use electrical panels or I may do something different. I have already done one such panel which is described on my web page (see link below) under the heading Transmission Line Pass-Thru Box.
However, the reason for this message is to suggest other things to include that I will be doing the next time around. This is all in addition to providing SO-239 style coaxial connections and an external ground connection.
1. A terminal connection for external non-coax cabling such as rotator cabling or external antenna switch or tuner cabling. At least two such beasts.
2. A 12-volt power pass through and maybe even a 120/240 line connection for external generator (if your service panel is not switched to a generator already). But, definitely the 12 volt power so I can have a battery coffin outside.
3. A second parallel (ladder) line connection. Here though you need to be careful about interference between the two ladder lines.
4. Room for adding additional things that you don't think of now. This suggestion hints at using a larger panel then you immediately need.