Will a Muslim be rewarded for spending on building?
Question

                Will a man be rewarded for spending on building?
Praise be to Allah. 
          It was narrated from Anas ibn Maalik that the Messenger 
          of Allaah 
          
          (peace and blessings of Allaah be upon him) said: “”Every building will 
          bring bad consequences to the one who built it, except that (which is 
          necessary).” 
 
          (Narrated by Abu Dawood, 5237; Ibn Maajah, 4161) 
 
          This hadeeth was classed as saheeh by al-Albaani in  
          al-Silsilah al-Saheehah, 2830. 
 
          It was narrated that Khabbaab ibn al-Aratt said: “I heard 
          the Messenger of Allaah 
          
          (peace and blessings of Allaah be upon him) say: ‘A man will be rewarded 
          for all of his spending, except (spending on) dust – or he said, on 
          building.’” 
 
          (Narrated by al-Tirmidhi, 2483; Ibn Maajah, 4163). 
 
          This hadeeth was classed as saheeh by Shaykh al-Albaani 
          in  al-Silsilah al-Saheehah, 2831. 
 
          Shaykh al-Albaani said: 
 
          Know that what is meant in this hadeeth and the previous 
          hadeeth – and Allaah knows best – is when a Muslim is too concerned 
          with building and buikds more than he needs. There is no doubt that 
          what is necessary varies according to the size of the builder’s family, 
          whether it is large or small, and whether he entertains guests or not. 
          In that regard it is similar to the saheeh hadeeth, “A bed for the man, 
          a bed for his wife, a bed for their guest, and the fourth is for the 
          Shaytaan.” (Narrated by Muslim, 6/146 and others; also narrated in Saheeh 
          Abi Dawood). 
 
          Hence al-Haafiz said, after quoting this hadeeth and 
          others: 
 
          “These are all to be interpreted as referring to things 
          that are needed in order to live a settled life, and to that which offers 
          protection against heat and cold.” 
 
          Then he spoke of some people who gave the false impression that all 
          kinds of building are sinful, and he commented on that by saying: 
 
          “That is not the case, rather it is subject to further 
          explanation. Not everyone who builds more than he needs is necessarily 
          guilty of sin… in some cases, building may bring reward, such as something 
          which benefits people other than the builder – this brings the builder 
          reward. And Allaah knows best. 
 
          Al-Silsilah al-Saheehah, 
          hadeeth no. 2831.