Comprehensive Assessment System for Building Environmental Efficiency (CASBEE)
Rating System
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The CASBEE is a nationally recognized third-party endorsement of green building features in a project. Used by property buyers and tenants alike, the certification conveys an efficient and high performance building with lower running costs.
CASBEE CERTIFICATION FEATURES
What Is It
Introduction
CASBEE, which stands for Comprehensive Assessment System for Building Environmental Efficiency, is a green building rating system developed in Japan. It evaluates the environmental performance and sustainability of buildings based on a wide range of criteria. CASBEE takes into account not only the energy and resource efficiency of buildings but also their impact on the local and global environment, as well as their contribution to the well-being of occupants.
The objective of the CASBEE rating system is to promote the development of sustainable buildings and encourage the adoption of environmentally friendly practices in the construction industry. It aims to assess and improve the environmental performance of buildings throughout their lifecycle, including design, construction, operation, and demolition.
CASBEE evaluates buildings based on multiple categories, including energy efficiency, resource conservation, indoor environmental quality, site and location, and the use of environmentally friendly materials. The system uses a points-based scoring method to assess and rate the sustainability of buildings, providing a benchmark for performance and facilitating comparison between different projects.
One of the unique aspects of CASBEE is its consideration of the regional and climatic context. It takes into account the specific environmental characteristics of the location where the building is situated, ensuring that the assessment is relevant and tailored to the local context.
The CASBEE rating system serves as a valuable tool for architects, developers, and building owners to evaluate and improve the environmental performance of their projects. It provides guidance and incentives to promote energy and resource efficiency, reduce environmental impact, enhance occupant comfort and well-being, and contribute to the overall sustainability of the built environment.
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CASBEE is a comprehensive green building rating system developed in Japan, evaluating and promoting the environmental performance and sustainability of buildings.
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§ Credibility for Sales & Leasing
§ Third Party Certificate
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Criteria and Certification Levels
The CASBEE rating system is based on five main criteria:
- Ecology: This area assesses the building’s impact on the environment, such as its energy use, water use, and waste generation.
- Human environment: This area assesses the building’s impact on human health and well-being, such as its indoor air quality, daylighting, and thermal comfort.
- Economic efficiency: This area assesses the building’s economic performance, such as its construction costs, operating costs, and resale value.
- Operation and management: This area assesses the building’s operation and management practices, such as its energy use, water use, and waste management.
- Community and society: This area assesses the building’s impact on the local community and society, such as its use of local materials, its contribution to job creation, and its accessibility to people with disabilities.
Certification Levels:
CASBEE provides certification levels based on the total score achieved by a building. The certification levels are as follows:
S: Highest level of performance and sustainability.
A: Excellent performance with a significant contribution to sustainability.
B+: Very good performance with a high level of sustainability.
B: Good performance with a moderate level of sustainability.
C: Average performance with a basic level of sustainability.
D: Poor performance with minimal sustainability aspects.
E: Buildings that do not meet the minimum requirements.
The certification levels help stakeholders, including building owners, developers, and occupants, to understand the environmental performance of a building and its contribution to sustainability. They provide recognition and incentives for buildings that achieve higher levels of environmental performance according to the CASBEE criteria.
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Different CASBEE Certifications
CASBEE (Comprehensive Assessment System for Building Environmental Efficiency) offers several certification levels to evaluate and recognize the environmental performance and sustainability of buildings. The different CASBEE certifications are as follows:
CASBEE for New Construction:
S Rank: The highest certification level, indicating exceptional sustainability performance.
A Rank: Excellent performance with a significant contribution to sustainability.
B+ Rank: Very good performance with a high level of sustainability.
B Rank: Good performance with a moderate level of sustainability.
C Rank: Average performance with a basic level of sustainability.
D Rank: Poor performance with minimal sustainability aspects.
CASBEE for Existing Buildings:S Rank: The highest certification level, indicating exceptional sustainability performance.
A Rank: Excellent performance with a significant contribution to sustainability.
B Rank: Good performance with a moderate level of sustainability.
C Rank: Average performance with a basic level of sustainability.
D Rank: Poor performance with minimal sustainability aspects.
CASBEE for Renovation and Refurbishment:S Rank: The highest certification level, indicating exceptional sustainability performance.
A Rank: Excellent performance with a significant contribution to sustainability.
B Rank: Good performance with a moderate level of sustainability.
C Rank: Average performance with a basic level of sustainability.
D Rank: Poor performance with minimal sustainability aspects.
CASBEE for Small and Medium-sized Office Buildings:S Rank: The highest certification level, indicating exceptional sustainability performance.
A Rank: Excellent performance with a significant contribution to sustainability.
B Rank: Good performance with a moderate level of sustainability.
C Rank: Average performance with a basic level of sustainability.
D Rank: Poor performance with minimal sustainability aspects.
CASBEE for Multifamily Residential Buildings:S Rank: The highest certification level, indicating exceptional sustainability performance.
A Rank: Excellent performance with a significant contribution to sustainability.
B Rank: Good performance with a moderate level of sustainability.
C Rank: Average performance with a basic level of sustainability.
D Rank: Poor performance with minimal sustainability aspects.
These different certifications provide stakeholders with a clear understanding of the environmental performance and sustainability level of a building, enabling informed decision-making and recognition for projects that prioritize and achieve higher levels of sustainability according to the CASBEE criteria.
Each of the above ratings are detailed systems of credits and prerequisites. The certification process is equally complex. Consult a green building specialist to determine which rating system your project should adopt to reap the maximum benefit out of the certification without paying extra for the same brand.
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Registration and Rating Procedure
CASBEE (Comprehensive Assessment System for Building Environmental Efficiency) follows a registration and rating procedure to assess and certify the environmental performance and sustainability of buildings. The procedure involves the following steps:
Registration:
- Building Owner/Developer: The building owner or developer expresses their intent to participate in the CASBEE assessment by submitting a registration form.
- Registration Fee: The building owner or developer pays the required registration fee, which may vary based on the building type and size.
Documentation Preparation:
- Building Owner/Developer: The building owner or developer prepares the necessary documentation, including building plans, specifications, energy data, and other relevant information.
- CASBEE Advisor: The building owner or developer may engage a CASBEE advisor, who is a qualified professional with expertise in CASBEE assessment, to assist in preparing the documentation and guiding the assessment process.
Assessment:
CASBEE Assessment:
- Self-Assessment: The building owner or developer conducts a preliminary self-assessment of the building’s environmental performance using CASBEE assessment tools.
- CASBEE Advisor Review: If engaged, the CASBEE advisor reviews the self-assessment and provides guidance and feedback to improve the assessment accuracy.
Preliminary Rating:
- CASBEE Assessment: The building owner or developer completes the official CASBEE assessment using the designated tools and methodology.
- CASBEE Advisor Verification: If engaged, the CASBEE advisor verifies the assessment results and provides support in improving accuracy if needed.
Rating and Certification:
- Rating Calculation: Based on the assessment results, the CASBEE system calculates the environmental performance score and assigns a certification level (e.g., S, A, B+, B, C, or D).
- Certification Decision: The CASBEE Certification Committee reviews the rating calculation and issues the official certification decision.
- Certification Issuance: The CASBEE certification, along with the building’s environmental performance score and certification level, is issued to the building owner or developer.
Renewal and Recertification:
- Recertification: CASBEE certifications are valid for a specified period, typically five years. After this period, the building owner or developer may seek recertification to maintain the building’s environmental performance recognition.
- Recertification Procedure: The recertification process involves updating the assessment documentation, conducting a new assessment, and verifying the results. The CASBEE Certification Committee reviews the recertification application and issues the renewed certification.
The CASBEE registration and rating procedure aims to provide a comprehensive evaluation of a building’s environmental performance and encourage continuous improvement in sustainability. It allows building owners, developers, and stakeholders to assess and showcase the environmental attributes of their buildings and demonstrates a commitment to sustainable practices in the built environment.
The World of Green Building Certifications:
Professional Credentials
CASBEE (Comprehensive Assessment System for Building Environmental Efficiency) offers professional credentials to individuals who demonstrate expertise in CASBEE assessment and related fields. These credentials provide recognition and enhance the credibility of professionals involved in CASBEE assessments. Here is the complete information related to CASBEE Professional Credentials:
CASBEE Registered Professional (CRP):
- CRP Designation: The CASBEE Registered Professional (CRP) designation is granted to individuals who possess the knowledge and skills necessary to conduct CASBEE assessments.
- Eligibility: Professionals from various backgrounds, including architects, engineers, environmental consultants, and sustainability specialists, are eligible to become CRPs.
- Training and Examination: To become a CRP, individuals are required to undergo CASBEE training and pass the CRP examination, which tests their understanding of CASBEE principles, assessment methodologies, and related topics.
- Renewal: CRPs need to renew their designation periodically by fulfilling continuing education requirements to stay updated with the latest developments in CASBEE.
CASBEE Accredited Professional (CAP):
- CAP Designation: The CASBEE Accredited Professional (CAP) designation is given to individuals who have advanced expertise in CASBEE and contribute significantly to its development and application.
- Eligibility: CAPs are typically professionals with extensive experience in sustainable building design, construction, operation, and management.
- Requirements: To become a CAP, individuals must demonstrate a deep understanding of CASBEE, contribute to CASBEE-related research or development, and provide evidence of their experience in implementing CASBEE in real-world projects.
- Evaluation: CAP applications are evaluated by the CASBEE Accreditation Committee, which assesses the candidate’s qualifications and contributions to the field.
- Renewal: CAPs are required to renew their designation periodically and continue contributing to the advancement of CASBEE through research, projects, or education.
CASBEE Verifier:
- Verifier Designation: CASBEE Verifiers are professionals who are authorized to verify CASBEE assessment results and provide guidance to ensure the accuracy and reliability of assessments.
- Eligibility: Verifiers are typically experienced professionals with expertise in sustainable building assessment and verification.
- Training and Authorization: Verifiers undergo specialized training provided by the CASBEE organization and are authorized to review and verify CASBEE assessment results.
- Role: Verifiers play a crucial role in maintaining the integrity of CASBEE assessments by ensuring compliance with assessment criteria and providing guidance to improve accuracy.
CASBEE Professional Credentials signify a professional’s knowledge, skills, and experience in CASBEE assessment and sustainability in the built environment. These credentials contribute to the credibility and expertise of professionals involved in CASBEE-related activities and promote the wider adoption of sustainable building practices.
Key Features
Multi-dimensional Assessment: CASBEE evaluates buildings based on a multi-dimensional approach, considering various aspects of environmental performance, including energy efficiency, resource conservation, indoor environmental quality, site ecology, and more. This comprehensive assessment provides a holistic view of a building’s sustainability performance.
Life Cycle Assessment: CASBEE considers the entire life cycle of a building, from design and construction to operation and demolition. It evaluates the environmental impact of a building throughout its lifecycle, promoting sustainable practices at every stage and encouraging long-term sustainability.
Regional Adaptation: CASBEE recognizes the importance of regional and climatic factors in assessing building performance. It takes into account the specific characteristics of the building’s location, such as climate, culture, and available resources. This regional adaptation ensures that the assessment is relevant and tailored to the local context.
User-Oriented Assessment: CASBEE emphasizes the well-being and comfort of building occupants. It assesses factors related to indoor environmental quality, occupant health and safety, and functional usability of the building. This user-oriented approach promotes healthier and more comfortable living and working environments.
Points-Based Scoring System: CASBEE uses a points-based scoring system to evaluate and rate buildings. Points are assigned based on the environmental performance of the building, and the total score determines the certification level. This scoring system allows for a standardized and quantifiable assessment of sustainability performance.
Continual Improvement: CASBEE encourages continual improvement in environmental performance. It provides feedback and guidance to building owners and developers on areas where improvements can be made, allowing for ongoing enhancements in sustainability practices.
Wide Applicability: CASBEE is applicable to various types of buildings, including new construction, existing buildings, renovation projects, small and medium-sized office buildings, and multifamily residential buildings. This wide applicability ensures that the assessment system can be used across different building sectors and sizes.
Transparent and Open System: CASBEE is a transparent and open system. It provides clear assessment criteria, calculation methodologies, and documentation requirements, allowing stakeholders to understand the assessment process and results. This transparency enhances credibility and trust in the CASBEE rating system.
Recognition and Certification: CASBEE provides certification levels (e.g., S, A, B+, B, C, D) to recognize buildings that meet specific environmental performance criteria. Certification serves as a mark of distinction and encourages the adoption of sustainable building practices.
Research and Development: CASBEE continually evolves through research and development. It incorporates the latest scientific knowledge, industry best practices, and technological advancements to ensure its relevance and effectiveness in assessing and promoting sustainable buildings.
These key features make CASBEE a robust and comprehensive green building rating system that promotes sustainability, environmental performance, and occupant well-being in the built environment.
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Pros and Cons of Implementation
Pros of CASBEE Implementation:
Comprehensive Assessment: CASBEE provides a comprehensive evaluation of a building’s environmental performance, considering various aspects such as energy efficiency, resource conservation, indoor environmental quality, and more. This holistic approach ensures a thorough assessment of sustainability.
Regional Adaptation: CASBEE incorporates regional factors, including climate, culture, and available resources, into its assessment. This ensures that the evaluation is tailored to the specific context, promoting regionally appropriate sustainable practices.
Life Cycle Approach: CASBEE considers the entire life cycle of a building, from design to demolition. This approach encourages sustainable decision-making at every stage, minimizing environmental impact throughout the building’s lifespan.
User-Focused Assessment: CASBEE prioritizes occupant health, comfort, and well-being. By assessing factors related to indoor environmental quality and functional usability, CASBEE promotes healthier and more comfortable living and working environments.
Certification and Recognition: CASBEE provides certification levels (e.g., S, A, B+, B, C, D) based on assessment results. Certification offers recognition for buildings that achieve high levels of sustainability, promoting a positive reputation and differentiation in the market.
Continuous Improvement: CASBEE supports continual improvement in environmental performance. It provides feedback and guidance to building owners and developers, allowing for ongoing enhancements in sustainable practices and performance.
Cons of CASBEE Implementation:
Complexity: Implementing CASBEE may require a thorough understanding of its assessment criteria, calculation methodologies, and documentation requirements. It can be complex and time-consuming, especially for those new to the system.
Resource Intensive: Gathering the necessary data and documentation for CASBEE assessment can be resource-intensive, requiring efforts in data collection, analysis, and verification. This may result in additional costs and time commitments for the building owner or developer.
Regional Variations: CASBEE’s regional adaptation can be a challenge when implementing it in different locations. The system may require modifications and adjustments to suit specific regional contexts, which can add complexity and inconsistency across regions.
Limited International Recognition: While CASBEE is widely recognized and utilized in Japan, its international recognition may vary. In some regions, other green building rating systems may be more prevalent and preferred, limiting the recognition and market value of CASBEE certification outside of Japan.
Evolving System: CASBEE is a dynamic system that evolves over time to incorporate new knowledge and industry developments. Staying updated with the latest revisions and updates can be a challenge, requiring ongoing training and education.
It’s important to consider these pros and cons when deciding to implement CASBEE. While it offers a comprehensive and regionally adaptable assessment, its complexity and resource requirements should be carefully weighed against the desired benefits and available resources.
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