At Morrow + Lorraine, sustainability is essential to our practice, our projects, our ethics and our ethos.

Sustainable outcomes in the construction and operation of buildings guide our decision making. Ultimately, we seek to leave a legacy of regenerative buildings that not only tread lightly on the environment, but work harmoniously with nature; the optimum model being circular, climate positive and bio-diverse. With both WELL and Passivhaus certified architects on our sustainability team, and an established knowledge of retrofit and refurbishment, we are advocates for a future that prioritises people, places and the planet.

Our practice specialism is the deep retrofit of buildings, which ensures that they perform well for our clients now, and are resilient to future change. We advocate the retention of as much useful building fabric as possible while adapting a building for the next phase in its life. Where fabric is redundant or unfit for retention, we will seek ways to minimise waste and work with contractors who embrace the principle of circularity in the building economy.

We are proud to collaborate with a group of clients and consultants who have also committed to addressing the challenge of sustainable construction and estate management for the long term. With them, we are able to illustrate in practice why and how sustainable design opportunities can improve building comfort, performance and aesthetics. A continued process of review and post occupancy evaluation allow us to improve on these processes with each and every project.

We collaborate + lead sustainable initiatives
We offer integrated sustainability services
  • WELL Certification
  • Passivhaus / Enerphit
  • Embodied carbon assessments
  • Post-occupancy evaluations
  • Life-cycle assessments
  • Circularity index analysis
We have identified a number of guiding principles that are helping us put sustainable goals into practice;

Whole-life carbon

Encompassing both operational and embodied carbon , WLC calculations consider the materials, construction and operation of a building over its entire life, including demolition and disposal. A carbon neutral building will measure, reduce and offset these emissions to bring its carbon load down to the minimum amount possible.


Engaging with a circular economy means moving beyond the take-make-throw model and towards the reduce-repair-recycle one. Designing out waste, choosing materials for durability and recyclability and promoting regenerative natural systems are all features of circularity.


Architecture is moving towards a richer understanding of biodiversity where green roofs, planted facades and construction materials from recycled waste or generated from bio-crops seek to address ecological diversity in more complex and interesting ways.


Encapsulating a range of criteria that revolve around user-experience, designing with wellbeing in mind focuses on the health and longevity of the building users, the wider community and the environment.

Social value

Fostering positive emotions through improving quality of life, freedom and flexibility, social value encourages participation, supporting of communities and establishment of ties with neighbourhoods and localities, strengthening a sense of place.


A long-life / loose-fit / low-energy approach is essential to ensure that our buildings are flexible and adaptable to the changing needs of this generation and well as those of the future, bearing in mind our changing climate.

We treat our office as an exemplar
In line with the RIBA’s 2030 net-zero pledge, we are committed to working in a carbon neutral office space by 2030. We will be evaluating our carbon footprint each year from 2021 and we will offset a significant portion of our emissions each year, ultimately moving us closer to becoming a net-zero business. Our next office design will be in line with WELL principles to ensure that the health and wellbeing of both our staff and visitors is prioritised.
We align ourselves with