Not quite but nearly.
Airservices does new navaid installation apart from civil works which are contracted out. Install comes under Part 171 certification which only airservices has.
Flight testing done by Aeropearl and charged as part of contract with airport owner. Subsequent periodic testing ( every three months for ILS ) is also charged to the navaid owner ie airport. This is why a nu,ber of private navaid owners want to get rid of them - the ongoing maintenance charges.
The aid is then owned by the airport but has to be maintained by airservices under Part 171.