YIT CORPORATION NOVEMBER 21, 2007 at 08:00 CORPORATE RELEASE COMPANY ANNOUNCEMENT YIT SELLS THE NETWORK SERVICES BUSINESS UNIT TO RELACOM YIT Corporation has signed an agreement to sell the Network Services business unit to Relacom Finland Oy. The transaction price amounts to EUR 25 million and it will be paid in cash. The transaction must be approved by the Competition Authority before it enters into force. It is expected that the deal will be consummated by the end of year 2007. The Network Services business unit provides telecom network construction and maintenance, electrical network maintenance and construction, and IT on-site services. In 2006, Network Services had revenue of EUR 83.7 million, representing 2.5 per cent of the YIT Group's revenue. The business unit currently has approximately 1,000 employees, or approximately 4 per cent of YIT's total personnel. The Network Services business unit mainly comprises the former YIT Primatel Ltd, which YIT acquired from Sonera in the spring of 2002. Following the acquisition, Relacom Finland Oy will become a stronger company in its field in Finland, serving operators and office market with construction, installation and maintenance services. Employees will transfer to Relacom under their current terms of employment. The sale of the business unit does not affect the YIT Group's outlook for 2007. The transaction has a non-recurring effect of about EUR 9 million on profit after taxes in Q4/2007. YIT CORPORATION Juha Kostiainen Vice President, Corporate Communications and Business Development For additional information, contact: Pekka Frantti, President, YIT Industrial and Network Services Ltd, tel. +358 50 390 0932 Sakari Toikkanen, Executive Vice President, YIT Corporation, tel. +358 20 433 2336 Petra Thorén, Vice President, Investor Relations, YIT Corporation, tel. +358 20 433 2635, +358 40 764 5462 Distribution: OMX Nordic Exchange Helsinki, principal media, www.yitgroup.com