Commuting between cities of work and residence
Question

                As salaamualaikum wa rahmatullilahi wabarkaatahu Sheikh:
I work in a different city than where my family is. My work is 250 kilometers 
from my family (parents, and brothers). I work from Monday to Friday and 
return to my family for Saturday and Sunday. I have an apartment where I 
work. My question is can I shorten my salaat in my working city or are both 
cities considered to be my home? 
Jazakallahu khariran
wa salaamualaikum
Praise be to Allah.Your home town, the one where your family 
  lives, is your home. The town which you intend to stay in for more than four 
  days is also considered a place of residence, according to the opinion of the 
  majority of scholars. Therefore you are not allowed to enjoy the concessions 
  of the traveler (i.e. shortening and combining the prayers) in either place. 
  However, you can shorten and combine prayers while traveling in between the 
  two places.
Refer to questions under Salaat 
  Ul-Musaafir (Prayer of the Traveler).