Prime Minister Najib Razak should ensure that federal development agencies focus on building low- and low-medium cost houses and stick to guidelines that the units should not cost more than RM400,000 or make a huge profits from these projects.

"Failure to do so will expose Najib as insincere, that the federal government is hypocritical by not practising what it preaches by profiting from the so-called public and affordable housing," Penang Chief Minister Lim Guan Eng said today.