Tommy
Contribution Based ESA is not affected by income (with the exception on pensions) and any savings and assets that you have, however, you need to be aware that if you are at anytime moved out of the Support Group then you will only have entitlement to ESA(CB) for 365 days, assuming that you have not already spent any time outside of the SG. Should this happen then the property may be considered as Notional Capital in regard to any Income Related ESA that you might be eligible for.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
