At the forefront of the housing boom in the country are young professionals from the services sector belonging to the middle income bracket. Individuals belonging to the services sector account for 47 per cent of the total registered users on indiaproperties.com. About 25 per cent of the total users on the site belong to the 26-30 age group and about 40 per cent users belong to the Rs 1-3 lakh income group, according to statistics released by Indiaproperties, a real estate services company.