[LEED Indoor Environmental Certification LEED ID+C Introduction]

July 29, 2025

LEED ID+C (Interior Design and Construction) is a green certification standard for interior design and construction launched by the U.S. Green Building Council (USGBC) in 2009. It aims to promote sustainable development and environmentally friendly design for interior spaces. As one of the world's most influential green building rating systems, LEED (Leadership in Energy and Environmental Design) covers multiple areas, including new construction, renovation of existing buildings, and interior spaces. LEED ID+C focuses on the interior design and construction phases, evaluating projects in energy efficiency, water management, material selection, indoor environmental quality, and waste management. It helps businesses create healthy, energy-efficient, and environmentally friendly indoor environments, enhancing occupant comfort and productivity.

LEED ID+C certification level

LEED ID+C certification is divided into four levels: Certified, Silver, Gold, and Platinum. The LEED ID+C certification is graded based on a cumulative score. Projects must be located on existing land, have a well-defined perimeter, and have at least 60% of the floor area completed. The certification process includes registration, document submission, on-site review, and final scoring, which is reviewed by the U.S. Green Building Council (USGBC). The scoring criteria cover energy and air quality, water use, materials and resources, indoor environmental quality, innovative design, and regional priorities. Projects must submit detailed design documents and undergo on-site verification to ensure compliance with green building standards. LEED ID+C applies not only to new renovations but also to green renovations of existing spaces. It emphasizes reducing environmental impact and improving indoor air quality during construction to protect occupant health.

LEED ID+C Indoor Environmental Assessment Standard

The LEED ID+C (Interior Design and Construction) certification standard is designed specifically for interior design and renovation projects, and is applicable to indoor spaces such as offices, retail, and hotels. The certification score covers seven major categories: location and transportation, water efficiency, energy and atmosphere, materials and resources, indoor environmental quality, innovation, and regional priority. Each category has prerequisites (must be met) and optional bonus items. Projects are required to submit detailed documentation and on-site verification to prove compliance with the requirements.

1. Location and Transportation: Encourage the selection of locations with convenient transportation, reduce the use of private cars, and promote walking, cycling and public transportation.
2. Water resource efficiency: Requires the installation of water-saving devices to reduce water consumption and improve water use efficiency.
3. Energy and atmosphere: Emphasize the use of efficient lighting, air conditioning and renewable energy to reduce carbon emissions.
4. Materials and Resources: Encourage the use of sustainable building materials, reduce construction waste, and promote resource recycling.
5. Indoor Environmental Quality: Improve indoor air quality, natural lighting, acoustic comfort, and thermal comfort to protect user health.
6. Innovation: Reward sustainable design measures that are groundbreaking or go beyond the norm.
7. Regional Priority: Design bonus points for projects targeting local environmental issues.

LEED certification consulting services

Hong Kong Energy Audit (HKEA) provides professional LEED ID+C certification consultancy services, assisting local and international clients in achieving their desired certifications. HKEA's experienced LEED APs, familiar with Hong Kong and international green building standards, offer comprehensive support, from pre-planning, design review, document preparation, to on-site verification. HKEA places a particular emphasis on energy efficiency analysis and indoor environmental quality enhancement, ensuring projects meet the highest environmental standards through scientific data monitoring and design optimization. Whether offices, retail spaces, or public facilities, HKEA can tailor green solutions to client needs, promoting sustainable development in Hong Kong's interior spaces and helping businesses achieve their green transformation and sustainability goals. For more information on LEED ID+C certification and professional support, please contact us for inquiries about our LEED certification consultancy services .

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HKEA Team Qualifications:

1. More than 13 years of experience in the field of sustainable development, focusing on energy performance optimization.
2. Possess the qualification of Registered Energy Assessor (REA) and have rich background in building services engineering.
3. Expertise in implementing and optimizing energy efficiency measures in building systems.
4. Chartered Engineer with extensive technical and practical knowledge.
5. Member of the Hong Kong Green Building Council (HKGBC) committee , contributing to industry standards and practices.
6. Guest lecturer at the Chinese University of Hong Kong (CUHK) and the University of Hong Kong (HKU) to cultivate future industry leaders.
7. Actively participate in public speaking and present at industry seminars.
8. Published many papers and articles on sustainable development.
9. Proven track record of leading successful sustainability projects and achieving significant energy savings.
10. Passionate about driving innovation and continuous improvement in the field of sustainable development.