Each year we help thousands of people create warm, healthy, energy efficient homes, to live more sustainably and reduce impact on the environment.

95% of people rate our expertise very good or amazing and would recommend us to a friend. 

Here's what some of them they have to say: 

  • “Thank you so much for the installation of the batts in my ceiling and the work done under the house to stop the dampness rising to my floorboards. The men who came were very nice and great workers to have around and I appreciate having all this done for me. I will truly look forward to putting my feet on a warmer floor in the morning! Thank you all so very much this has been a wonderful gift from the Sustainability Trust and I will appreciate it for many years to come.” - Margaret, Naenae.

  • "The guys who came to house were really informative and knowledgeable. Great work, great service. I'm very happy." - Serena, Kapiti Coast

  • "We like the values of the Sustainability Trust, the price was really reasonable, and the feedback we had read from other customers was great. The installers made short work of what turned out to be a pretty tricky job with our ceiling and underfloor insulation. We can't recommend you highly enough!" - Kieran, Newlands

  • "We are so grateful for the insulation we got put in in our rental through the Sustainability Trust with the government funding. It has made a massive difference to how warm and dry our home has been, and reduced so much stress, especially with a child with asthma." - Sarah, Mornington

  • "I had always wanted to get a house audit done, and the free offer made it even more attractive. The products I bought are cheap but effective, and the insulation blanket was a good way of augmenting my current insulation." - Emily, Newtown

  • "Everyone - consultant and installers - were professional, arrived on time, and were very helpful with advice." - Christina, Lower Hutt

  • "Great service! We knew a bit about energy conservation already, but Josh offered lots of useful and easy to understand explanations about how heat moves through the house and creates moisture. I'm looking forward to using my new heat pump this winter." - Catherine, Northland

  • "The home visit assessment was fantastic - really detailed, practical and pragmatic about what was/not worth doing. I've already told lots of people to take it up." - Fiona, Kandallah

  • "I had a rental property brought up to compliance standards, and a certificate of compliance issued. I found the staff really helpful in talking me through the process, liaising with my tenant, and was very grateful for their advice and expertise." - Jenny

  • "Everyone at the Sustainability Trust very friendly and professional, and offer great advice and support in a whole range of areas. I appreciate that they are up front about products when recommending them, and that they will not always recommend their own product over an alternative from elsewhere if it a better fit for my needs (although I have also bought some great products from the Trust!)" - Sarah, Mornington

  • "It is very good to have such experts in the community as a reliable source of information relating to healthy homes." - Paul, Harcourts Real Estate

  • "Keep up the awesome service for those on a limited budget. Your company made a huge difference to the lives of me and my son when you insulated our home and provided free curtains when I purchased our first home since having a child (the kid is now nearly 17!) I will always be grateful for that :) "

Read more at our Google reviews and Facebook reviews.