Principles for Responsible Timber Construction Implementation Framework logo

Reuse, retrofit and extend before rebuilding

To get the most from the Implementation Framework explore strategies and actions across each project phase to see how the Principles for Responsible Timber Construction can be applied.

Strategies

Strategy 1.2 Reuse, retrofit and extend before rebuilding

Prioritising reuse and retrofit over demolition is one of the most powerful ways to cut embodied carbon.  It protects the environmental value already stored in existing structures. This strategy encourages project teams to treat adaptive reuse as the default starting point. Assessing how timber solutions can extend and revitalise buildings rather than replace them. Because timber is lightweight, precise and low impact, it enables both vertical and horizontal extensions with minimal disruption and reduced construction waste. Early feasibility studies – covering spatial layout, structural integrity, and whole life cycle performance – support informed design briefs and investment appraisals. By embedding retrofit and extension options into early-stage planning, projects can unlock new urban density, retain heritage value, and demonstrate leadership in responsible, low-carbon construction aligned with net-zero and circular economy principles.

Principles for Responsible Timber Construction included in this strategy

Stakeholders

Actions

Phase 1 Strategy 1.2 Developers

Require adaptive reuse assessments (spatial, carbon structural) in every feasibility study

Tools and Guidance
Principles included in this strategy
  • Extending the life of existing buildings
  • Maximising the carbon storage potential of wood

Phase 1 Strategy 1.2 Cities & Policymakers

Introduce planning requirements for demolition justification, including reuse feasibility and carbon analysis

Tools and Guidance
Principles included in this strategy
  • Extending the life of existing buildings
  • Maximising the carbon storage potential of wood

Phase 1 Strategy 1.2 Cities & Policymakers

Less demolition, more reuse and retrofit

Sub-action

Introduce planning requirements for demolition justification, including reuse feasibility and carbon analysis.

Tools and Guidance
Principles included in this strategy
  • Extending the life of existing buildings
  • Maximising the carbon storage potential of wood

Phase 1 Strategy 1.2 Designers

Recommend hybrid retrofit approaches using mass timber and biobased materials for vertical/horizontal extensions

Tools and Guidance
Principles included in this strategy
  • Extending the life of existing buildings
  • Maximising the carbon storage potential of wood