To register as a CASC your club must meet the following qualifying conditions and meet them on an ongoing basis otherwise the club may lose its CASC status and be subject to a de-registration charge:

1. Be open to the whole community
2. Be organised on an amateur basis
3. Have its main purpose the provision of facilities for, and the promotion of participation in, one or more eligible sports.
4. Not exceed the income limit
5. Meet the management condition
6. Meet the location condition

Details of the qualifying conditions can be found here (sections 2.2 to 2.25).

The club must also have a suitable constitution. Your NGB may have a model CASC compliant constitution.

Please also see the Q & A - Qualifying Conditions section on the conditions a club must meet to qualify for CASC status.