Monitoring and testing of substructures during and post-construction are required as quality assurance. In general, the tests consist of the bearing capacity of the foundation, the integrity of the pile foundation, deformation of the retaining structure, settlement of embankment, excess pore water development, etc.

Geotes Regio Inti was established to provide independent, dependable, and professional testing and monitoring services related to substructures. The services include:
- Static Load Test, to determine bearing capacity of pile foundation.
- Pile Driving Analyzer (PDA) to determine the pile foundation's bearing capacity and shaft distribution.
- Pile Integrity Test (PIT) to determine the integrity of pile foundation (concrete).
- Thermal  Integrity  Profiling,  to determine the integrity of pile foundation (cast in-situ pile).
- Cross-hole Sonic Logging, to determine the integrity of pile foundation (cast in-situ pile).
- Inclinometer to determine the deformation retaining structures.
- Piezometer to determine the excess pore water pressure.
- Extensometer and settlement plate to determine the settlement of a barrier.