A Building Boomlet in the Inner Cities by Kathy Price-Robinson hile some developers and builders spend their days hunting for housing lots in outlying suburban areas, a few are pointing their pencils and power saws in the opposite direction, back into the inner cities. It may be too early to call it a full-scale building boom, but "boomlet" may describe a recent upsurge in inner-city, single-home building projects. In the past few years, the demand for building permits has multiplied in interior parts of such cities as Cleveland, Detroit, and Houston from which the middle class hightailed it for the suburbs decades ago. For developers and one-off builders alike, the upswing has created both new opportunities and