Consolidating four distinct businesses under one umbrella, Sustainable Investments (SI) Ltd aims to lead the charge in promoting energy efficiency and decarbonisation in the housing sector striving to alleviate fuel poverty.
Sustainable Investments Ltd Careers
Careers at Sustainable
About Sustainable Investments
Passionate about people and preserving their living conditions, we pride ourselves on our high-quality standards, caring approach, formidable teamwork, dedicated leadership and unwavering commitment to honesty and integrity.
Our Values
Doing the right thing,
in the right way
High Quality Standards
Honesty and Integrity
Caring
Teamwork
Leadership

Our Sustainable Mission
Our mission dates all the way back to the 1970s under our founding businesses, building over the years to become what it is today: helping help people to enjoy better living conditions, while reducing costs and improving the quality of their lives by tackling the biggest crises faced today across health and wellbeing, cost of living, energy, and climate change.
Each year, we deliver multi-measure, energy-efficient works to thousands of homes as part of an all-encompassing initiative to improve the quality of people’s lives – and work tirelessly to make these options affordable, accessible and realistic for all.
Meet our Sustainable Investments People


Aaron Patel
Planning and Processing Coordinator
PermaRock Products Ltd


Amber Lawton
Apprentice Quantity Surveyor
Sustainable Building Services


Paul Butt
Head of Marketing
Sustainable Energy Services


Liam Donaldson
Trainee Quantity Surveyor
Sustainable Building Services
“A site based apprenticeship role offers a fast paced working environment, travelling across all different areas means you’re never working in the same place – each day brings its own challenges. The highlight of my apprenticeship so far is in the people I have met, I’ve worked with many people while being here, across different sites and every single one of them having been a joy to work with.”
Liam DonaldsonTrainee Quantity Surveyor
Honestly I didn’t think id enjoy my apprenticeship as much as I have done, don’t get me wrong its hard work – but it’s fun at the same time and I feel like I have my own little work family to go to everyday. Get involved as soon as possible because we are making a real difference in people’s lives and knowing that we are making that difference makes me really proud to work for Sustainable.
Amber LawtonApprentice Quantity Surveyor