FACTS:

An action for partition was filed but this didn't prosper.  A case was then filed alleging that the house was occupying more than the share in the lot.   
 

HELD:

When  co-owned  estate  is  partitioned,  it  is  the  co-owner  whose  portion  is encroached  upon  who  has  the  option  to  sell  that  portion  or  buy  the improvement.