
Achieving decarbonisation through retrofit
Our toolkit will help you to make informed decisions in prioritising decarbonisation plans to single assets or across entire estates to reduce energy usage.
introduction
The retrofit challenge
Contact us today to find out how we can decarbonise your assetsMany building portfolios face a real challenge in meeting upcoming net zero carbon targets and are at risk of having stranded or toxic assets. We have developed a data driven decision making toolkit – The Retrofit Toolkit to decarbonisation, which will help you to review your assets in an informed and strategic way.
In the UK, 80% of buildings which will contribute to the UK net zero carbon target for 2050 already exist. To meet this requirement, urgent action is needed.
Every building is different and comes with its own unique challenges and requirements. Using this tool, you can make informed decisions as part of your estates strategy. It will identify where you can lower your energy costs, reduce maintenance costs and your carbon footprint and create more resilient assets.
The Retrofit Toolkit can be used on an individual building basis or scaled up to consider multiple assets across an entire estate. This will help you choose which interventions would be most beneficial to you using a balance of capital cost, energy savings, payback, embodied carbon and more.
Heating our buildings across the UK building can currently require up to 170GW of gas. Our electricity grid has a capacity of only 60GW, with a planned upgrade to 95GW. To meet the 2050 requirement, we cannot rely on increased capacity, we need to reduce our demand.""
our solution
The Retrofit Toolkit to decarbonisation
When applied, the Retrofit Toolkit will identify bespoke solutions that can be applied to your estate’s requirements, which balance capital costs, maintenance costs, energy savings, cost savings over time and embodied carbon. We take a tailored approach which produces personalised results and interventions based on your asset.
Determining interventions
Using a combination of specific data from your asset, the cost and energy values of readily available products and technologies and typical guidance readily available to all designers, we will develop a number of different intervention options and calculate tangible results.
Funding options
We understand the different funding options that are available to undertake these works and can support you in gaining access to these if applicable.
Here to help
Get in touch to find out how this toolkit can help you to create and prioritise decarbonisation across a single or multiple assets and help you to reduce your energy usage.
data input
Implementing the Retrofit Toolkit
Navigating the pathway to decarbonisation
Our ongoing decarbonisation roundtable series continues to spark engaging conversations on the challenges and opportunities in retrofitting. The series aims to foster connections amongst the industry, forming a community committed to sustainable practices.

Practice News
Sharing what we’ve learned from our 2025 decarbonisation roundtable series
Discover insights from our 2025 decarbonisation roundtables on net zero buildings, circular economy, energy resilience, and digital tools for sustainable construction in the UK.
Date: 19 Jan 26
by AHR

Practice News
Decarbonisation in Leeds: Tackling greenwashing and cost barriers
At our decarbonisation roundtable discussion in Leeds, experts joined us to explore how we can overcome greenwashing, cost and National Grid challenges to lead the UK’s net zero journey.
Date: 8 Oct 25
by AHR

Practice News
Circular design, accountability and energy resilience: Glasgow's decarbonisation roundtable event
At our decarbonisation roundtable discussion — the third of this year’s series — professionals from across public and private sectors came together to explore the opportunities and challenges ahead.
Date: 9 Sept 25
by AHR
results
Savings based on real world data
These savings are based on a theoretical school, with the results and interventions bespoke to this project specifically. Some interventions include installing sustainable insulation boards between rafters, adding an insulated render externally and applying a new heating system and Mechanical Ventilation with Heat (MVHR)system.
5234k
kg Embodied CO2
41%
EUI saving
2.8m
kg 30 year operational CO2 reduction
£241k
annual energy cost reduction
98.78
kWh/m2yr EUI saving
Links
- Learn more about our Retrofit Toolkit
- Read more about our approach to sustainability
- Learn more in our building consultancy decarb brochure
- Read how sustainable school design is shaping net zero learning estates
- Explore how the role of the university estate is shaping student experiences
- Find out how we can support in improving energy-efficiency of your estate

Practice News
Office 2035: A joint roundtable hosted by AHR, Ramboll and Sterling Properties
Explore the future of UK workplaces. Discover key insights from our joint roundtable on the barriers and opportunities shaping workplace design by 2035.
Date: 10 Feb 26
by Simon Lamprell
Director, Architecture
Events
We're attending DPRTE 2026, supporting the future of defence estates
DPRTE (Defence Procurement Research Technology Exportability) 2026 is an opportunity for us to collaborate and explore new ways to shape the next generation of defence estates and buildings.
Date: 20 Jan 26
by AHR

Practice News
How we are revolutionising our building surveys with drone expertise
Our in-house geomatic consultancy team regularly delivers drone surveys, offering our clients, and our teams of architects and building consultants, a significant number of benefits.
Date: 12 Aug 25














