
Sustainable design & build for modern and heritage projects in South Devon.
We design and deliver beautiful new buildings, retrofit existing ones and restore unique listed and period properties.
Our friendly team of sustainable designers and builders are committed to excellence and have delivered certified Passivhaus new-builds and retrofits as well as Grade 1 listed restorations.
We approach every project in a holistic way, thinking through the whole build from the outset to make sure you get what you want within the budget you can afford.
We use natural materials wherever possible. They’re better for the environment, human health and often the performance of the building as well.
An ultra low-energy modern home with panoramic views of beautiful Dartmoor.
YELVERTON
NEW BUILD * PASSIVHAUS DESIGN & BUILD
"What can I say other than we are thrilled with our new home. Thank you for your ideas, advice, input and friendship."

Sustainable spaces: where thoughtful design meets quality craftsmanship
Our projects span an apparently diverse mix of expertise. On the face of it, a high-performance Passivhaus doesn’t seem like it has much in common with a Grade 1 heritage restoration or a sustainable home retrofit. But for us, the overlaps are many - and they define our approach as designers and builders.
Our understanding of buildings and how they’re made - and made well - is the backbone of all that we do here at Greenacre. We pride ourselves on our attention to detail, making sure the highest standards are met whether for low-energy performance or traditional authenticity.
Natural materials are central to all our projects. They’re environmentally friendly, offer performance advantages over modern alternatives and look effortlessly beautiful.
We believe in simple, elegant, uncluttered design, where the plan always serves the purpose - and not the other way around.
And we believe in sustainability. We believe in making good buildings that last and helping old buildings last longer. Our sustainable spaces are designed and created for you, for your life - and for whatever you want it to be.
We design and build beautiful new buildings, are specialists in heritage restoration and offer a range of services for sustainable retrofit.
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We offer a concept to completion design and build service for beautiful, energy efficient new builds.
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We are experienced designers and builders of certified Passivhaus buildings and have an in-house Passive House Consultant.
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We are experts at the traditional restoration of period, heritage and listed buildings up to Grade I standard.
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We offer a range of specialist lime services including lime plastering, lime rendering, lime pointing and working with insulating lime products.
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We offer a whole-house design and build retrofit package as well as stand alone retrofit services.
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We are specialists in specifying and both internal and external solid wall insulation using high performance natural materials.
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Our specialist expertise in building design, build and restoration makes us the perfect partner to help you address any challenging problems in your existing building.
Our memberships and accreditations
We’re members of the Association of Environmentally Conscious Builders (AECB) and The Green Register, are certified Warmcell installers and have an in-house certified Passivhaus Consultant.
A unique heritage building in the heart of Plymouth now houses a bustling cafe and an ultra low-energy modern flat.
THE HUTONG CAFE & FLAT
RETROFIT * DESIGN & BUILD * HERITAGE * PASSIVHAUS
“Dan helped us through the design process with some great practical advice. He then managed the project throughout the construction on a tight and complex site.”
The many benefits of natural materials
We use natural materials in all our work. Whether we’re working on an ultra high performance Passivhaus new builds, a Grade I listed restoration or a mid-century retrofit, natural materials will always be our go-to material of choice.
As a sustainable building company we obviously care a great deal about the environment. Doing our work well and doing it right are values that underpin everything we do. Natural materials form part of this approach, reducing our carbon footprint as a company and the carbon footprint of your build. Natural materials also reduce our use and reliance on unsustainable synthetic materials, any waste from which ends up in landfill.
But we don’t just use natural materials because they are good for the environment, we also use them becuase they are excellent building materials. The unique natural properties of natural materials such as flexibility and breathability enable your building to perform at its best, whether its brand new or centuries old.
A few of our favourite natural materials are sustainably sourced timber, lime plaster, wood fibreboard, recycled newspaper Warmcell insulation as well as natural wood oils and clay paint for internal finishing. These natural products also benefit your health, as they off-gas significantly fewer volatile organic compounds (VOCs) than their modern equivalents.








Ready to talk over your ideas?
Give us a call or drop us an email to get the ball rolling on your project. Any initial consultation or site visit is always free and no-obligation.