More residential units for Dumbo! Plans for a commercial and residential conversion at the warehouse at 201 Water Street — aka the Jay Street Arts Building — are taking shape, not far from the many other new developments in the neighborhood. The architects have a date with the LPC on Oct. 23 for an “application to alter masonry openings, replace windows, install storefront infill, a canopy and construct rooftop additions.” Over at the Department of Buildings, building owners filed a permit for “a conversion of an existing manufacturing building and enlargement.” The plan is to increase the three-story building to six stories; the architect on record is Karl Fischer. Proposed are 126 units. The DOB disapproved the plans last month, and who knows what the LPC will say. Anyone got their hands on a rendering?