RIBA Plan of Work 

Stage 0-3 Support

Workflow diagram:

The opportunity to make key sustainable and beneficial decisions at the early stages of concept design are often overlooked. Mesh recommends that this is where you and your client should start the conversation.

Clients often hold off spending money on consultancy fees until after planning. The problem with this is that as the design phases progress, options and design choices reduce and costs increase rapidly. At worst, lack of sustainable design considerations before going for planning permission can lead to a resubmission or, indeed, fundamental building design elements that are not compatible to reach the desired energy efficiency goals of the client.



Mesh can help you and your client to navigate this early-stage design. We help to keep costs under control, whilst also giving appropriate design analysis and consideration before submitting the building for approval.

For the most successful low-energy and progressive projects, we find the following services offer benefits to both the homeowner and wider design team:

Initial overheating analysis

gives peace of mind that the building design is within comfortable limits and is thermally stable year round. Any issues can be flagged and the design modified appropriately without compromising the aesthetics. 

Building fabric optimisation

allows you to intelligently spend the project budget precisely where it will have the biggest impact on energy bill savings and thermal comfort. Ideal if you have a fixed budget for insulation work or an optimal design point you are trying to uncover.

Renewable energy feasibility

enables you to holistically review renewable technology options for the building, understand capital and running costs, available government subsidies and the best way to proceed. The optimised whole-site strategy will give your design team clarity for moving the project into the next stage. 

Embodied Carbon Analysis

can be supported at the very earliest stages of your project for even concept designs to better inform design evolution. Be sure you’re on the right track and designing progressive and beautiful, lower carbon buildings with confidence. 

Vertical gradient, white to light gray.

By taking a measured approach at this early stage, we take the guesswork out of low-energy building design. 

Embodied Carbon Calculator

Our FREE Embodied Carbon Calculator gives a valuable insight at the very early stages of the design process allowing you to discover how the embodied carbon of your designs is affected by material choice and also how your building compares to the RIBA 2030 targets.

LEARN MORE ABOUT THE EC CALCULATOR
Embodied carbon calculator

At whichever stage of your project you are, drop us a line and we will be glad to support you



Relevant Articles

7 April 2026
Delivering a home in the open countryside under Paragraph 84 of the National Planning Policy Framework is widely recognised as one of the most demanding routes to planning approval in England. In this article we dive into the key considerations with one of the UK’s leading experts. Rob Hughes is a planning consultant who has spent his career navigating the complexities of this policy. With multiple Paragraph 84 approvals (and all the previous iterations) secured across 22 planning authorities in 16 counties to date, and more than a decade working alongside Mesh, he shares his perspective on what makes these projects succeed – and why early collaboration is so important. Q: What is the starting point for a successful Paragraph 84 scheme? The absolutely vital first step is a thorough development appraisal. Before any design concepts can begin, we have to understand the planning policy framework and how it applies to a specific site. Not every rural site can support a Paragraph 84 dwelling. The reality is many are not appropriate or are too constrained. The first-stage appraisal is about ascertaining whether this site genuinely has the right ‘ingredients’ to justify a new home in the countryside under this policy. The policy sets an exceptionally high bar in design terms – not just for architecture, but for environmental performance, landscape integration and long-term sustainability. You have to understand the site constraints, opportunities, and the local planning context, which can include how that local authority has interpreted Paragraph 84 for previous schemes. This is not a box-ticking exercise – it about judgement, experience and taking a realistic approach. Q: Clients may approach Paragraph 84 as a way to ‘get permission to build a new home in the countryside’. How do you manage those expectations? Paragraph 84 is not a silver bullet to getting planning approval and the reality is much more complex. The honest answer is this is not always the right route as it cannot be applied to every rural site. For example, if a site sits next to a settlement, the requirement for isolation means it is very unlikely to be supported. In those cases, pursuing Paragraph 84 would be the wrong approach. The key to success is understanding how policy is likely to be applied and being upfront with clients early on about the chances of success. If a proposal is not capable of meeting Paragraph 84 – or other policies that support new dwellings in the countryside – then it simply shouldn’t proceed. That honesty avoids wasting significant amounts of time, money and emotional energy for the client. Paragraph 84 applications are a significant undertaking for clients – financially and emotionally. You have to balance the landscape, ecology, site heritage, biodiversity, and drainage considerations alongside the need for outstanding sustainable architecture. Coming to a clear conclusion at the outset about whether a development on a particular site is able to deliver this level of ambition is absolutely necessary. That honesty is the foundation of a successful project. Q: Once a site is identified as meeting the policy criteria, what factors determine success? The next step is identifying all the issues that the planning proposal must address and assembling the right team with the right level expertise to achieve that. Paragraph 84 is not just about architecture. Yes, the design has to be exceptional – but it also has to mitigate impact and deliver environmental enhancement. That means combining landscape, environmental and building design, and sustainability expertise from the very beginning of the design process. These projects involve considerations such as architectural quality, landscape effects, biodiversity and ecology improvement, drainage impacts, heritage effects, energy strategy, carbon outputs, and long-term operational performance of the building itself. That’s why we need a range of disciplines and deep expertise to inform and evidence the proposed design. Q: You have worked with Mesh on these complex projects for more than a decade. Why do you bring them onto your Paragraph 84 projects? Mesh’s engineers are experts in their field, and they understand what Paragraph 84 demands. Sustainability is not an add-on under this policy – it is a fundamental aspect of achieving the highest standards of design. Mesh provides the sustainable construction insight, performance modelling and energy strategy to inform the design process from day one. We never want to be six months down the line trying to fix a problem. It is much better to have their engineers shaping the scheme from the outset. This level of collaboration is critical. Everyone involved needs to push hard to maximise the benefits of what a scheme can deliver and to make it as good as it can be. Q: What specifically do Mesh contribute to Paragraph 84 schemes? Mesh’s engineers define how a house will achieve the level of performance required by the Paragraph 84 framework. They understand the baseline requirements of Building Regulations and Passivhaus-level performance, but they go beyond that. This means working closely with the architects and landscape architect to deliver a scheme that exceeds standard specifications and expectations – because that is exactly what Paragraph 84 demands. A Paragraph 84 home shouldn’t just be architecturally significant. It has to be deeply integrated into its landscape, be genuinely highly sustainable and deliver demonstrable and measurable environmental benefits. Evidencing how that performance is achieved requires detailed technical input, analysis and close collaboration – this is where Mesh add real value to every project. Q: Why is it so important to involve Mesh from concept stage? Getting Mesh on board at inception is critical. That will avoid having to address problems at a later stage which can result in significant reworking of the scheme. Early involvement allows their engineers to influence fundamental decisions, such as how the dwelling is constructed, the choice of materials, energy strategy, orientation, ventilation, plant and services requirements, and how the building can harness energy from its environment. Those decisions need to be made at concept stage, correctly documented and evidenced with modelling as part of the planning narrative. On Paragraph 84 projects, higher standards of design and sustainability are not optional. Mesh understands that and will help to ensure energy efficiency and environmental performance are inherent to the scheme. Q: Any final advice for clients considering a Paragraph 84 project? Clients have to genuinely buy into the design process. Paragraph 84 is not a shortcut to planning – it is demanding, complex and there are pitfalls to avoid if success is to be achieved. But by being open-minded, engaging with the design process and assembling the right team from the outset, there is a pathway to success for a fantastic project. On projects of this complexity, experience and collaborative working makes all the difference. www.hughesplanning.co.uk
9 March 2026
Energy performance specialist Mesh has successfully delivered a sustainability project for Forestry England at Westonbirt, The National Arboretum, helping to improve the energy efficiency and long-term resilience of buildings on the 600-acre estate. The historic arboretum near Tetbury, managed by Forestry England, is one of the UK’s most visited heritage sites, attracting hundreds of thousands of visitors every year. Rapid growth in visitor numbers, combined with the impact of climate change, prompted the need for a clear, practical plan to reduce energy use and carbon emissions across the estate’s facilities including the visitor centre, café and restaurant and offices. Following a competitive tender, Mesh was appointed to develop an evidence-based strategy to guide building upgrades, balancing sustainability ambitions and the transition away from fossil fuels in this sensitive rural and heritage setting. Mesh took a whole-building approach, assessing how the buildings on the estate currently perform, how they are used at different times of the year in line with fluctuating seasonal visitor patterns, and how future changes to climatic conditions could affect running costs and user comfort. This has enabled Forestry England to make informed decisions on heating solutions, energy supply and building fabric improvements, and to plan upgrades in a phased approach. It provides a clear framework for improving energy efficiency, and importantly, for moving away from fossil fuels. Several of the strategies have already been implemented, delivering immediate energy efficiency improvements whilst informing longer-term refurbishment and upgrading plans. Sophie Nash, Programme Manager at Forestry England: “Our aim with this project was to use detailed analysis to steer our specifications for remediation and upgrading works to improve the energy efficiency and sustainability of our most heavily-used buildings at Westonbirt and the resilience of our electricity infrastructure to support future growth. The assessments carried out which were very thorough and detailed, provide us with valuable insight to inform the design and specification of refurbishment and remediation works in a phased approach.” Doug Johnson, Founder and Director of Mesh: “For rural estates, landowners, parks and visitor attractions across the UK, this project for Forestry England clearly demonstrates how a data-led, whole-building approach can accelerate decarbonisation and create a clear route towards net zero – even in the most sensitive heritage environments and landscapes.” The Westonbirt project reflects growing demand from rural estates, landowners and visitor attractions for clear sustainability strategies that reduce risk, improve performance and support long-term resilience. Image credit - Forestry England / Brian Martin