Energy-efficient commercial buildings deduction revisited.

• Author: Schuerman, Michelle

The deduction available for updating or constructing more energy-efficient commercial building property has been previously discussed; see Schuerman, Tax Clinic, "Energy-Efficient Commercial Buildings Deduction," TTA, April 2006, p. 204. At that time, little guidance was available on how to take the deduction under new Sec. 179D. Since then, the IRS issued Notice 2006-52, providing interim guidance, pending the release of regulations.

Overview

The deduction is available for taxpayers that own or lease commercial buildings. To qualify, the energy-efficient property must meet the following requirements:

* It is installed on or in any building located in the U.S. and is within the scope of American Society of Heating, Refrigerating, Air Conditioning Engineers (ASHRAE) Standard 90.1-2001 (see Notice 2006-52, Sections 5.02 and 5.06, for a complete description);

* It is installed as part of(l) the interior-lighting systems, (2) the heating, cooling, ventilation and hot-water systems or (3) the building envelope; and

* The taxpayer has certification that installation of such property will reduce total annual energy and power costs by 50% or more, compared to a "reference building" that meets the minimum requirements of ASHRAE Standard 90.1-2001. (The required 50% reduction must be accomplished solely through energy and power cost reductions for the heating, cooling, ventilation, hot-water and interior-lighting systems. Reductions in any other energy uses, such as receptacles, process loads, refrigeration, cooking and elevators, are not taken into account.)

The maximum deduction allowed cannot exceed $1.80 times the building's square footage, less the aggregate of any prior-year's deductions taken for the building under Sec. 179D. If multiple taxpayers install energy-efficient commercial building property on or in the same building, the maximum deduction that may be taken by all such taxpayers cannot exceed such amount.

Square footage: In determining a building's square footage, all conditioned areas with headroom height of 7.5 feet or greater are included, such as basements, mezzanines, intermediate-floored tiers and penthouses. Items not included are covered walkways, open roofed-over areas, porches or similar spaces, exterior terraces or steps, chimneys, roof overhangs and similar features. Any enclosed space in the building that qualifies as cooled or heated space (i.e., output capacity of the cooling or heating system exceeds 5 British thermal...