LEED v4 New Construction Guide

Understanding LEED v4 for New Construction

LEED v4 for Building Design and Construction (BD+C): New Construction is a rating system designed for whole buildings and additions that are either new constructions or undergoing major renovations. To qualify, at least 60% of the gross floor area must be complete, and the project must encompass significant interior alterations, exterior shell work, and core and service system upgrades. This system is ideal for projects aiming to achieve high sustainability standards through integrated design, construction, and operation practices.

Key Requirements and Credits

Prerequisites and Credits Overview

The LEED v4 BD+C rating system offers a comprehensive framework with various prerequisites and credits across categories like Integrative Process, Location and Transportation, Water Efficiency, Energy and Atmosphere, Materials and Resources, and Indoor Environmental Quality. Projects must earn a total of 40 points to achieve LEED Certified status, with higher levels requiring more points.

Location and Transportation (LT)

• Compact and Connected Development: Projects must demonstrate proximity to high-density areas or access to public transit. High-density areas are defined as having a residential density of at least 7 dwelling units per acre and a nonresidential density of at least 0.5 FAR (Floor Area Ratio).
• Transportation Demand Management: Encourages the use of sustainable transportation options, reducing vehicle miles traveled (VMT) and associated greenhouse gas emissions.

Energy and Atmosphere (EA)

• Estimated Energy Use and Operational Carbon Projection: A prerequisite requiring the estimation of energy use and carbon emissions based on the proposed design.
• Enhanced Energy Efficiency: Offers up to 12 points for achieving significant energy savings beyond the baseline set by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) standards.

Materials and Resources (MR)

• Planning for Zero Waste Operations: A prerequisite focusing on waste reduction strategies during both construction and ongoing operations.
• Reduce Embodied Carbon: Encourages the selection of materials with lower embodied carbon, contributing to a more sustainable construction process.

Indoor Environmental Quality (EQ)

• Air Quality Testing and Monitoring: Ensures indoor air quality meets or exceeds established standards, enhancing occupant health and comfort.
• Occupant Experience: Focuses on creating a comfortable and productive indoor environment through factors like lighting, thermal comfort, and acoustics.

Practical Guidance from Real Project Experience

From our experience at ISG, achieving LEED v4 certification requires meticulous planning and coordination among stakeholders. Key strategies include early integration of sustainability goals into the design phase, rigorous material selection processes, and robust waste management plans. Engaging with local authorities and community groups can also enhance the project's social and environmental impact.

How ISG Can Help

At ISG, we specialize in guiding projects through the complexities of LEED certification. Our team offers comprehensive services from initial consultation to final documentation, ensuring compliance with LEED v4 standards and maximizing potential credits. Contact us today to learn more about how we can support your sustainability goals.