Substantial bombing damage and the continued existence of pre-war slums in many parts of the country made the task of housing reform particularly challenging for Bevan. Indeed, these factors, exacerbated by post-war restrictions on the availability of building materials and skilled labour, collectively served to limit Bevan's achievements in this area. 1946 saw the completion of 55,600 new homes; this rose to 139,600 in 1947 and 227,600 in 1948. While this was not an insignificant achievement, Bevan's rate of house-building was seen as less of an achievement than that of his Conservative (indirect) successor, Harold Macmillan, who was able to complete some 300,000 a year as Minister for Housing in the 1950s. Macmillan was able to concentrate full-time on Housing, instead of being obliged, like Bevan, to combine his housing portfolio with that for Health (which for Bevan took the higher priority).