Work started in 1953, and the company demolished auxiliary structures to make way for the new home office building. The tunnel to the northern annex was retained, and a sky bridge was built at the eighth floor of the new building. To minimize disruption to Metropolitan Life's operations, the new home office was erected in two stages, so construction on one part of the home office could go on while normal operations proceeded in the other portion. The first stage was built between 1953 and 1957, and the second, between 1958 and 1960.