Common mistakes include using the wrong application route, as most working-age people must claim Universal Credit instead of Housing Benefit, and failing to provide proof of identity, income, rent or household members. Check that your tenancy details and rent liability are accurate, and report changes such as moving home, starting work or someone joining or leaving your household promptly to your council. Housing Benefit does not normally cover Council Tax, so check whether you also need Council Tax Support. If you are unsure which benefit applies or how a change affects you, check GOV.UK or contact your local council.