LANDSCAPING SERVICES
WHY LONGEVITY IS THE MISSING LINK IN SUSTAINABLE LANDSCAPE DESIGN
BY DAVE WATSON, MD OF HAHN PLASTICS UK
Sustainability is now firmly embedded in modern landscape design, shaping material choices, procurement decisions and longterm performance expectations. Across both the public and private sectors, net zero targets increasingly influence project briefs from the outset. But an important distinction remains: are we designing for sustainability at handover, or for performance decades in use? Too often, solutions appear affordable and sustainable in the short term, yet deliver a much shorter lifespan, increasing both carbon impact and lifetime cost in the process.
Part of the challenge lies in the continued dominance of capital-led decision-making, where designers are asked to prioritise upfront cost over long-term value. When specification is driven mainly by capex, materials that meet immediate budget constraints can be favoured over those engineered to endure. The result is shorter lifecycle performance, more frequent repairs and, in some cases, premature replacement- all of which undermine wider sustainability ambitions over time.
Whole-life thinking is starting to gain traction, and while public procurement has helped formalise whole-life costing models, the same principles apply just as strongly to private developments and commercial schemes. Clients are recognising that the true cost of a landscape isn’ t measured at installation, but across decades of use. A product that costs more today but performs reliably for decades can prove more economical- and significantly lower carbon- than one that needs constant intervention.
Maintenance is often the hidden variable in sustainability calculations. Repainting, sealing, surface treatments, reactive repairs and eventual replacement all carry environmental consequences, and every visit to site involves transport and additional materials- adding to the environmental footprint. By reducing the need for intervention you reduce both operational carbon and long-term cost. In practical terms, building to last simply reduces
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