Once a CCJ has been issued against you, this will appear on your credit report and remain there for up to seven years.
Mortgage lenders will always check your credit report in order to assess your reliability for repaying debt, and many lenders will flat-out reject applicants with a recent CCJ on their file, regardless of their income, outgoings or overall credit history.
If you’ve been issued a CCJ, it’s always worth checking a lender’s minimum eligibility criteria before applying for a mortgage. This will nearly always detail its policy on applicants with CCJs.