| A | B | C | |
|---|---|---|---|
1 | Topic | CCH Experts | External Experts |
2 | construction & architecture | Bob Cowherd (architect), John Nelson, Susan Sternfeld | Billy McCaffrey (construction) |
3 | plumbing systems | Bob Melvin (engineer) | Randell Drane (engineer) |
4 | utility connections | Susan Sternfeld | |
5 | General handyman work | Robin | |
6 | HVAC system | Bob Melvin (engineer), Bob Cowherd (architect) | Randell Drane (engineer) |