Yes, lenders do consider the location of the property, including areas with a high concentration of ex-council properties, when assessing mortgage applications. Areas with a high density of ex-council flats may be perceived as higher risk due to potential issues with marketability and resale value. Lenders evaluate factors such as the overall desirability of the location, local amenities, crime rates, and the reputation of the housing estate. Properties in well-maintained, desirable areas with good transport links and amenities are more likely to secure mortgage approval.