• Government intends to seek views on possible approaches to measuring and reducing embodied carbon of new buildings in due course.

https://irp.cdn-website.com/bdbb2d99/files/uploaded/Embodied%20and%20Whole%20Life%20Carbon%20Implementation%20Plan%20-%20final.pdf

Coordinated engagement with
- suppliers and trade associations to provide EPDs
- industry initiatives to share data and review defaults
- material sectors to understand decarbonisation plans
- Homes England / DLUHC / BEIS / UKNZCBS / BECD

• WLC Oversight Group meets every 3 months to share progress and take input from the wider WLC and homebuilding community

• Draft new homes assessment framework published in FHH Implementation Plan

• Working groups develop the WLC conventions for new homes and background data tables for the tool.

• Publish draft conventions and data tables

• Working with commercial tool providers to incorporate the FHH conventions into other tools.

This group will focus on how to reliably aggregate whole life carbon data from individual dwellings and development sites up to business unit and company-wide levels.

It aims to bridge the gap between detailed, quantities-based assessments and broader spend-based Scope 3 reporting.

• Working group meets to review latest data available for generic impact factors and update the default materials table in Conventions for New Homes

• Review and update proposed assessment framework for new homes if appropriate.
• Update published generic materials table
• Update published buildups table

• Industry engagement with larger developers, SMEs and manufacturers to define scope and requirements for a simple WLC tool for homebuilders.

• Develop simple tool for launch to Hub members in March 2024.

• Tool v2 launch to Hub members - enables user defined materials and buildups.
• Supports as built reporting, which will feed into benchmarking.

• Custom material input and build-ups
• Save, continue, and reload functions
• Web browser access (in addition to Excel add-in)

• Further tool versions add funtionality every 3 months

• Tool v3 launch to Hub members - includes infrastructure site elements.
• Enables whole project reporting per the draft new homes assessment framework.

• Benchmark for low rise homes based on phase 1 study (35 assessments, ~10 developers)

• Make it easy for new homes developers to share disaggregated data about carbon impacts, material quantities and high-level project info.

• Voluntary disclosure of pilot projects for plot-level carbon.
• Gather and share disaggregated data from existing assessments within the Hub.

• Once the v2 tool has launched, we can start using it to collect WLC data from developers.
• We will also be able to accept detail exports from Oneclick and other commerical tools, which use the FHH conventions.
• Call for all Hub members to start using the tool, endorsed by the CEO council.

This group will address how to measure the carbon impacts of site preparation and infrastructure elements — such as roads, utilities, landscaping, and external works — which are often overlooked in current practice.

It will identify common assumptions, buildups, and material factors to support consistent calculation, and work to classify and define early-stage carbon benchmarks for different site types.

• Voluntary disclosure of pilot projects for site-level carbon.
• Gather and share disaggregated data from existing assessments within the Hub.

• Publish robust benchmarks based on all data gathered to date.
• These will also be available for reference within the tool.
• Annual or more frequent update of benchmarks tbc

• Indicative target levels set initially as part of Hub's Net Zero Transition Plan for the homebuilding sector

• Once the measure is consistent and benchmarks understood, developers can begin to create a targeted approach to reduction.

• Target levels reviewed and updated on an annual basis tbc in line with Hub Sustainability Framework

• Working groups identify the common buildups and generic materials for new homes.

• Call for material sectors to improve generic data + engage with Working Group 2
• FHH to work with engaged material / product sectors to improve / keep reference data up to date

• Start measuring extent of product manufacturer specific data used in assessments - EPD coverage

• Set interim target level of EPD coverage for developers / manufacturers to meet
• Identify hot spots (high carbon impact, few EPDs)

• Target full EPD coverage of all key components