CHELMSFORD, MA-Cadence Design Systems Inc. reaches an agreement with DIV Chelmsford LLC, an affiliate of the Davis Cos., and extends its lease at the 100,000-sf facility at 270 Billerica Rd. for 10 years.

TYNGSBOROUGH, MA-Fairchild Semiconductor Corp. leases 10,000 sf of office and R&D space at 300 Potash Hill Rd. The deal represents a new location for Fairchild, which recently acquired the RF Components Division of Raytheon.

BOSTON-A coalition of city councilors join with the Chinese Progressive Association to sue the Boston Zoning Commission over its approval of the 30-story, 346-unit Residences at Kensington Place.

CAMBRIDGGE, MA-A first mortgage financing in the amount of $55 million was nailed down for 55 Cambridge Parkway, a nine-story, 276,000-sf building situated on more than one and a half acres along the Charles River.

BOSTON-Ferriter Scobbo & Rodophele PC leases 11,658 sf at 125 High St. in the High Street Tower. The law firm signed a 10-year lease and will use the space in the 30-story, 921,000-sf tower for its headquarters.

BOSTON-Archon Group completes the sale of 3 Post Office Square and 24 Federal St. to Massachusetts Mutual Life Insurance Co. for $33.2 million. The two buildings are located Downtown and total 139,364 sf.

BOSTON-The United States Postal Service leases 8,171 sf at 31 Milk St. in the heart of the city's downtown. The USPS signed a 10-year lease and will occupy the first floor and lower level areas of the 105,000-sf building.

BURLINGTON, MA- Mayflower Communications leases 13,918 sf at 20 Burlington Mall Rd. The 100,000-sf first-class office building is owned by Boston Properties and located within the 10 and 20 Burlington Mall Road complex.