Calculating the ROI of building enclosure commissioning

According to Evan Mills, PhD, a researcher at Lawrence Berkeley National Laboratory, building enclosure commissioning, or BECx, should be viewed as “the single-most cost-effective strategy for reducing energy, costs, and greenhouse gas emissions in buildings today.”

(This article excerpted from BD+C's June 2013 AIA/CES course on cladding and exterior insulation. Take this free course at BD+C University.)

Mills studied the benefits of BECx, noting that commissioning only costs about $1.16/sf for new construction and $0.30/sf for existing buildings on average, with a payback period of as little as 14 months. Savings associated with using BECx from both maintenance and energy savings average about 16% for existing buildings and 13% for new construction. The main benefit is that whole-building energy savings are guaranteed, thanks to the pivotal role of the enclosure in determining efficiency performance.

“Further enhancing the value of commissioning, its non-energy benefits surpass those of most other energy-management practices,” including major first-cost savings through right-sizing of HVAC equipment, Mills has testified. “When accounting for these benefits, the net median commissioning project cost was reduced by 49% on average, while in many cases they exceeded the direct value of the energy savings.”

The National Institute of Building Sciences published its NIBS Guideline 3-2012 on enclosure commissioning last year. The U.S. Green Building Council has allowed the application of BECx to earn an innovation credit in the LEED rating system, and BECx was even considered as a prerequisite, but that proposal lost momentum, says Rob Kistler, AIA, NCARB, Committee Chair for NIBS Guideline 3 and Principal, The Facade Group.

It appears that LEED v4 will not explicitly encourage the detail review, onsite testing, and observation that some enclosure experts say is what makes BECx effective, notes Tristan Roberts, with BuildingGreen’s LEEDUser service. Instead, the new LEED draft language directly quotes NIBS Guideline 3, which describes the following techniques as part of proper BECx for enhanced building commissioning:

• Devise a plan early in the project cycle that describes testing requirements, acceptance criteria, and documentation.

• Review details in the construction documentation to check for overall performance, continuity of weather barriers and insulation, and constructability.

• Conduct observations on the job site as required for critical milestones in enclosure installation, from field mockups to trades startup to field testing.

• Use mockups to benchmark workmanship requirements and ensure compliance with specifications and manufacturer’s installation requirements.

The NIBS committee for BECx, which Altenhofen serves on, recommends including a consulting enclosure expert for the building project, especially in the construction administration phase. The expert will help ensure proposed cladding materials and systems are integrated properly into the design process, followed by visual observations of a statistical sampling of installation of work. Toward the end of the CA phase and before acceptance, a blower-door test will check whether the air infiltration levels are equal to or better than standard.

As noted in the summary of NIBS Guideline 3, BECx helps reduce the chances that inadequate cladding work will be discovered during the punch list phase: “The performance of the enclosure cannot be verified until the entire building is completely enclosed. At this time it is not possible to tune or dial in the performance. To access a nonperforming subsystem or assembly might be very expensive.”

(This article excerpted from BD+C's June 2013 AIA/CES course on cladding and exterior insulation. Take this free course at BD+C University.)

The newly released Quarterly Construction Cost Insights Report for Q3 2023 from Gordian reveals material costs remain high compared to prior years, but there is a move towards price stabilization for building and construction materials after years of significant fluctuations. In this report, top industry experts from Gordian, as well as from Gilbane, McCarthy Building Companies, and DPR Construction weigh in on the overall trends seen for construction material costs, and offer innovative solutions to navigate this terrain.

Clifton Court Hall, University of Cincinnati, Cincinnati, Ohio, designed by LMN Architects - Top 170 University Building Architecture Firms for 2023

University Buildings | Sep 27, 2023

Top 170 University Building Architecture Firms for 2023

Gensler, CannonDesign, Page Southerland Page, SmithGroup, and Ayers Saint Gross top the ranking of the nation's largest university sector architecture and architecture/engineering (AE) firms, as reported in Building Design+Construction's 2023 Giants 400 Report.

Wide corner view of affordable housing development Harrison Plaza

Affordable Housing | Sep 25, 2023

3 affordable housing projects that serve as social catalysts

Trish Donnally, Associate Principal, Perkins Eastman, shares insights from three transformative affordable housing projects.

Resiliency | Sep 25, 2023

National Institute of Building Sciences, Fannie Mae release roadmap for resilience

The National Institute of Building Sciences and Fannie Mae have released the Resilience Incentivization Roadmap 2.0. The document is intended to guide mitigation investment to prepare for and respond to natural disasters.

Data Centers | Sep 21, 2023

North American data center construction rises 25% to record high in first half of 2023, driven by growth of artificial intelligence

CBRE’s latest North American Data Center Trends Report found there is 2,287.6 megawatts (MW) of data center supply currently under construction in primary markets, reaching a new all-time high with more than 70% already preleased.

Top hotel architecture firms for 2023 - Pendry Hotel, designed by SOM. Photo: Dave Burk, courtesy SOM

Giants 400 | Sep 20, 2023

Top 130 Hospitality Facility Architecture Firms for 2023

Gensler, WATG, HKS, and JCJ Architecture top BD+C's ranking of the nation's largest hospitality facilities sector architecture and architecture/engineering (AE) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report. Note: This ranking includes revenue for all hospitality facilities work, including casinos, hotels, and resorts.

Ambulatory Orthopedics center exterior rendering

Adaptive Reuse | Sep 19, 2023

Transforming shopping malls into 21st century neighborhoods

As we reimagine the antiquated shopping mall, Marc Asnis, AICP, Associate, Perkins&Will, details four first steps to consider.

Top Office Building Architecture Firms for 2023 Pictured: 2100 L office building in Washington, D.C., designed by WDG

Giants 400 | Sep 18, 2023

Top 200 Office Building Architecture Firms for 2023

Gensler, Stantec, HOK, and Interior Architects top BD+C's ranking of the nation's largest office building sector architecture and architecture/engineering (AE) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report. Note: This ranking includes revenue for all office building work, including core and shell projects and workplace/interior fitouts.

Resort Design | Sep 18, 2023

Luxury resort provides new housing community for its employees

The Wisteria community will feature a slew of exclusive amenities, including a market, pub, and fitness center, in addition to 33 new patio homes.

Life of an Architect Podcast | Sep 18, 2023

Life of an Architect Podcast Ep. 134: Management 101

It happens to most people eventually. Some get there quickly, while others take a bit longer. Transitioning into a management role is a natural evolution of skill development, but that doesn’t necessarily make it any easier. Chances are you’re ready for management, but in case you’ve questions, we think we have answers.

Currently Reading

Calculating the ROI of building enclosure commissioning

Tags

Construction Costs | Sep 28, 2023

University Buildings | Sep 27, 2023

Affordable Housing | Sep 25, 2023

Resiliency | Sep 25, 2023

Data Centers | Sep 21, 2023

Giants 400 | Sep 20, 2023

Adaptive Reuse | Sep 19, 2023

Giants 400 | Sep 18, 2023

Resort Design | Sep 18, 2023

Life of an Architect Podcast | Sep 18, 2023

Most Popular Content

Magazine Subscription

Get our Newsletters

Follow BD+C: