Spaces. At the intersection of Broadway and Prince Streets rundown office space is turning into slick gallery space at a fast clip. Those of us who spent last season listening to power saws and getting lost in half-wired hallways at 560 Broadway, where the postmodern appointments are only now falling into place, will probably spend the coming season rubbing elbows with the same construction workers up the street or around the corner. Boomtime on the east edge of SoHo is partly a result of the migration of galleries that opened in the East Village in the early Eighties but could never draw in the crowds; and the concentration of galleries in highrises does make it easier for all of us to get to a range of shows. But the use of office space as gallery space—long a fact of life on Fifty-seventh Street—also lends a dangerously homogenized tone in a city where as it is every streetscape is coming to resemble every other one. Though there is much that can be done to give a gallery in an office space a distinctive look (the Diane Brown Gallery at 560 Broadway has attempted to retain the storefront style of its earlier SoHo quarters), nothing can be done about the approach, which will inevitably be down a generic office building hallway. SoHo’s rickety staircases, tin ceilings, and broad dimensions are the new victims of “economic prosperity,” which has already turned the domestic-scale galleries of the Upper East Side, with their