The funeral cortège goes up Great Brunswick (now Pearse) Street, a major thoroughfare on the south side of central Dublin, passing in turn a "National school. Meade's yard. The hazard." The second item in the list is a business. The third is a cabstand.
The school in question is St. Andrew's Boys' and Girls' National School, at 114-116 Great Brunswick Street. The building still stands, but the school was decommissioned in the 1970s. For more photos and information on St. Andrew's school, see builtdublin.com/st-andrews-national-school-114-6-pearse-street-dublin-2/.
According to Gifford (reading Thom's), Meade's, at 153-159 Great Brunswick Street, is "Michael Meade & Son, builders and contractors, sawing, planing, and moulding mills, and joinery works."
The hazard is the same cabstand that Bloom passed by in Lotus Eaters, "An hour ago."