The process of accretion, which is growth or increase by gradual addition, in finance and general nomenclature. An acquisition is considered accretive if it adds to the item’s value or corporation’s earnings per share.


​The practice of comparing quantitative data (usually performance metrics) against another set of data, and can be done for a variety of measurements, such as greenhouse gas emissions, solar energy output, paper products use, etc. ​By benchmarking—accounting, measuring, and tracking—owners can compare a building’s key performance metrics to similar buildings to determine a building’s cost […]

Build It Green GreenPoint Rated (GPR) Certification

​GreenPoint Rated is a program of Build It Green, a professional non-profit membership organization whose mission is to promote healthy, energy and resource efficient buildings in California. GreenPoint Rated´s recommended measures and performance benchmarks specifically address climate and market conditions in California. The rating process is a non-invasive physical examination of building systems, structures, materials […]

Building Envelope

​The building envelope separates the interior of a building from the exterior.  It is composed of the foundation, roof, walls, doors, and windows. The energy efficiency, physical protection from climate, indoor air quality, and durability can all be evaluated to determine the effectiveness of an envelope.

Building Performance Institute (BPI)

​The Building Performance Institute (BPI) is an organization for home performance professionals. BPI provides credentialing and quality assurance standards for energy auditing and energy efficiency upgrades.​ Examples of certifications include Energy Auditor (EA), Multifamily Building Analyst (MFBA), and BPI Rater.


​CalCERTS has been approved by the California Energy Commission to act as a Home Energy Rating System Provider. As such, CalCERTS administers a statewide program that trains, certifies, and tracks home energy raters and the data that they collect.​


​The California Green Building Standards Code is Part 11 of twelve parts of the official compilation and publication of the adoption, amendment, and repeal of building regulations to the California Code of Regulations, Title 24, also referred to as the California Building Standards Code. The purpose of this code is to improve public health, safety, […]

CALGreen Commissioning

​In the state of California, commissioning is required per the CALGreen building code (section 5.410.2) for all newly constructed, non-residential buildings over 10,000 square feet.

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