the bricks were purchased from Chunaain,,sand from chenab,,gravel from Margalla,,cement from a local dealer in lahore..
Some advise from my experience is to decide what type of sanitary fittings you would like to have..for example what kind of WC? wall mounted or on floor(conventional)?..even when it comes to on floor WC's do keep in mind they have different designs with respect to the drain..some WC's have drain designs near the wall,some have drains 6 or 8 inches away from the wall.
problem arises when you have already finalized your plumbing structure and come to know that a certain WC you like , wont fit..
same goes for the type of basin you want to put..what kind of vanity design you want..the type of mixture..
Visit S.Abdullah..they have Sale twice every year in June and December.I had a chance to visit them when they were on Sale and got complete Bathroom Mixture sets of ROCA (spain) in around 18 thousand rupees..although they are basic design sets but the quality is superb..they costed me even cheaper than Sonex sets..
do survey the market before finalizing your plumbing structure and if possible try to purchase one item as a sample so that your plumber may make adjustments accordingly..