Embodied Carbon in Interior Fit-Outs

Embodied carbon seems abstract because we can't see it in the finished environment. A wall doesn't reveal how much carbon was generated producing its steel, gypsum, insulation, glass, or finishes. A ceiling doesn't tell us what was emitted manufacturing and transporting its components. 

Within our Economics of Space work, we estimate embodied carbon by examining the major elements of an interior fit-out—including walls, doors, ceilings, and carpet—and applying material-based carbon estimates informed by EC3 data. 

In this way, the calculation turns something largely invisible into something that can become part of a project decision, providing an answer to the question: What will it cost in carbon to build? 

The cost of carbon becomes even more important on Day 2. When space needs evolve, the renovation required  often means demolition. Walls come down. Ceiling conditions change. Doors move. Flooring is replaced. New materials arrive to create the next iteration of the space. 

The environmental impact now includes the carbon embodied in the original construction along with the carbon associated with what comes next. Demolish and rebuild repeatedly, and embodied carbon accumulates repeatedly. 

Adaptable architecture introduces a different possibility. If walls, doors, and other architectural components can be reconfigured and reused rather than demolished and replaced, much of the carbon already invested in those components can remain productive. This distinction becomes significant over multiple cycles of change.

For years, sustainable design has appropriately focused on what things are made of. Material ingredients, recycled content, responsible sourcing, manufacturing impacts, and end-of-life options all matter. Embodied carbon now adds another dimension to that conversation: how often will we have to make this again? 

A material with a favorable carbon profile can still generate repeated impacts if it is routinely demolished and replaced. Conversely, an architectural component designed to remain useful through multiple configurations can spread its original embodied carbon across a much longer service life. This moves the sustainability conversation from material selection toward material longevity, giving adaptability an environmental value beyond flexibility alone. 

The Economics of Space asks us to look beyond initial construction cost and consider the value an interior creates—or destroys—over time. Embodied carbon belongs in this equation. 

Every demolition decision has consequences beyond the cost of labor and replacement materials. These decisions can also discard the energy, resources, manufacturing, transportation, and carbon already invested in the architecture being removed. But once these impacts become measurable, reuse begins to look like a way of preserving an investment already made—in materials, in money, and in carbon—making the economics of space inseparable from the economics of resources.

The environmental impact of an interior doesn't end on Day 1. Explore how Haworth Architectural Solutions is rethinking the Economics of Space to understand the financial, operational, and carbon implications of what happens next.