Real estate portal PropTiger has acquired Housing.com in an all stock deal, with the combined entity raising $50 million from global online real estate advertising company REA Group and $5 million from Softbank. The deal values Housing at $70 million, which was its latest valuation two months back, when Softbank put in a bridge of $5 million in the startup, two sources said. Both companies declined to divulge financial details of the deal. However, the joint company is believed to be valued at close to $250 million, sources said.