756 hvac permits filed recently
756 permits
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Requesting modification to Section 1104 and 1109 of the DC Mechanical code to allow for the use of A2L refrigerants and the elimination of shafts and shaft ventilation, respectivel…
Interior alteration to cellar, single family use to remain. new work includes new interior walls, finishes, and fixtures. new electrical wiring, plumbing and mechanical to support…
Construct new one-story accessory building in rear yard behind single-family detached dwelling, including mechanical, electrical and plumbing systems, patios, steps, retaining wall…
Mechanical trade Permit