Under the provisions of Section-17 (1) of the Act, each participating State is required to prepare a Sub-regional Plan for the Sub-region within that State.

Subsequent to notification of Regional Plan 2021, the participating State Govts. are preparing the Sub Regional Plans of their respective sub-region with the financial assistance from NCR Planning Board :

Haryana Sub-region
Uttar Pradesh Sub-region
Rajasthan Sub-region
NCT of Delhi Sub-region