<P> Developed by Mission Street Development LLC , an affiliate of Millennium Partners , the US $350 million project was designed by Handel Architects , engineered by DeSimone Consulting Engineers and constructed by Webcor Builders . At 645 feet ( 197 m ) , it is the tallest concrete structure in San Francisco , the fourth tallest building in San Francisco overall , and the tallest since 345 California Street in 1986 . It was also the tallest residential building west of the Mississippi River when finished ( later surpassed by The Austonian in Texas ) . The tower is slender , with each floor containing 14,000 square feet ( 1,300 m ) of floor space . In addition to the 58 - story tower , there is a 125 - foot ( 38 m ) , 11 - story tower on the northeast end of the complex . Between the two towers is a 43 - foot ( 13 m ) , two - story glass atrium . In total , the project has 419 units . </P>
<P> Developed by Mission Street Development LLC , an affiliate of Millennium Partners , the US $350 million project was designed by Handel Architects , engineered by DeSimone Consulting Engineers and constructed by Webcor Builders . At 645 feet ( 197 m ) , it is the tallest concrete structure in San Francisco , the fourth tallest building in San Francisco overall , and the tallest since 345 California Street in 1986 . It was also the tallest residential building west of the Mississippi River when finished ( later surpassed by The Austonian in Texas ) . The tower is slender , with each floor containing 14,000 square feet ( 1,300 m ) of floor space . In addition to the 58 - story tower , there is a 125 - foot ( 38 m ) , 11 - story tower on the northeast end of the complex . Between the two towers is a 43 - foot ( 13 m ) , two - story glass atrium . In total , the project has 419 units . </P>
who built the millennium tower in san francisco
who built the millennium tower in san francisco
Mission Street Development LLC , an affiliate of Millennium Partners
Mission Street Development LLC , an affiliate of Millennium Partners