DSJ Design
Low-carbon timber and concrete building at golden hour surrounded by mature planting

Sustainability

Sustainability
by design.

A mindset embedded in the practice — shaping site, form, structure, reuse and material from the first sketch.

Our position

Not a service.
A mindset.

Sustainability is not simply a consultancy service at DSJ Design.

Environmental thinking shapes the earliest strategic decisions on a project — site, form, structure, reuse and material — rather than being applied late as compliance.

We describe what we do and how we approach it. We do not publish environmental claims, certifications or performance figures that have not been verified on a specific project.

Architectural detail of a sculptural staircase in concrete and oak
Victorian London brick house with a contemporary glazed extension and green roof

Reuse & retrofit

Work withwhat exists.

The lowest-carbon building is very often the one already standing. We begin by testing how much of the existing structure, fabric and character can be retained.

Retrofit is approached with the same rigour as new build: fabric performance, moisture, daylight and comfort resolved together rather than in isolation.

Detail of reclaimed brick meeting new oak joinery and lime plaster in raking daylight

Materials

Materialprovenance.

Specification is a design decision. We favour materials with a clear story — where they came from, how they age, and how they can be repaired or reused.

Detailing is kept honest and legible so junctions can be maintained rather than replaced.

Planted courtyard garden framed by architectural walls and mature trees

Landscape & biodiversity

Buildingsin a setting.

External design carries environmental weight: shading, water, microclimate and habitat all sit alongside architecture in our thinking.

Planting is designed as part of the project, not applied afterwards.

How it shows up

Ten considerations.

  • 01

    Passive design

    Orientation, form, daylight and ventilation considered first.

  • 02

    Energy

    Reducing demand before adding technology.

  • 03

    Carbon

    Considering embodied and operational carbon together.

  • 04

    Materials

    Responsible specification with an understanding of provenance.

  • 05

    Reuse

    Retaining and adapting existing structure wherever viable.

  • 06

    Retrofit

    Improving the performance of existing buildings sensitively.

  • 07

    Longevity

    Designing for durability, maintenance and long service life.

  • 08

    Landscape

    External design as part of environmental performance.

  • 09

    Biodiversity

    Planting and habitat considered alongside architecture.

  • 10

    Adaptability

    Spaces able to change use as needs evolve.

Designing for the long term.

Discuss Your Project