What are the common mistakes made by home builders?

Builders are scaling back everywhere to make homes more affordable. But, there are deal breakers. This is because of not understanding the end customers properly and assuming this is what they want. This is the most common mistake committed by most of the builders.

to name few, use of sub standard material, construction not as per sanctioned plan, nil after sale service, extra for common spaces, parking, defective title deeds,

Dear, Making luxury homes with all amineties and infras is not a problem but sale would be poor since there would be dearth of white money. Its good to explore middle class needs where money flow would be better, BUT it doesnt work since builders follow on one and only guideline for loans prescribed by RBI norms. If one wants to have good cash flow, there are many options open but builder won't like to follow and would like to scream on marketing guys where liberty in sale is limited. Called as a good salesman who can sell a ac in cold region, but here the powers are 100 percent with the salesman to sell his product. In real estate nowhere is cent percent powers also there is no review meetings BUT EXPECTATIONS are high. Same time most of the builders fail to fulfill commitments after sale,spoiling the name of whole Builder lobby. There are many good, professional builders, but since because of some all broth is spoiled.  TAKERS ARE MANY BUT SHOULD ONE KNOW HOW TO EXTRACT IN OTHER THAN ROUTINE STYLE MAINTAINING PROFESSIONALISM......