Practical Sustainability and Energy Efficiency from Start to Finish
At Ratio Seven, our work revolves around helping people understand and meet the growing challenges in sustainable construction and SAP consultancy. Creating buildings that are energy efficient and meet modern regulations is no longer optional’s expected. That’s why we focus on providing practical support rather than just ticking boxes. Whether you are designing a new development or upgrading a single home, we’re there to help every step of the way.
We don’t offer one-size-fits-all advice. Every project has different constraints, ambitions, and goals. So we make sure our guidance reflects that. With a team that combines technical know-how and decades of experience, we aim to give you clear steps towards making better, greener buildings without making the process more complicated than it needs to be.
All-in-One Services from Planning to Certification
We support architects, builders, developers, and homeowners through every stage of the project. Our services cover planning, design, construction, and project completion.
Here are some of the areas we work in:
- SAP calculations for new builds, extensions, and conversions
- SBEM calculations for commercial and larger developments
- Support with Part L compliance, which ensures your building meets energy efficiency rules
- Detailed energy and sustainability statements for planning permission
- Thermal modelling and overheating reports that follow the London Plan and CIBSE rules
- Whole-life carbon assessments and energy use intensity modelling
- Air pressure testing for airtightness
- Water efficiency calculations
- Energy Performance Certificates for dwellings at the completion stage
Whether you’re dealing with a single property or a housing development, we can handle everything that’s needed for sustainability and energy rules. We help to avoid last-minute issues by giving you everything in one place with professional advice you can trust.
Full Support Across Every Stage of Building
We break down our services to match the stages of your build so that it’s easy to see what you need and when.
Planning Stage
This is where we help shape the project before construction begins. Our work here usually includes providing local authorities with energy and sustainability reports, plus early-stage SAP and SBEM figures to show how the build will meet regulations. These documents help secure planning permission smoothly.
Design Stage
Now’s the time to make important decisions without the cost of getting out of control. Our SAP consultancy team runs thermal modelling and energy calculations to help guide insulation levels, heating systems, and layout changes. By thinking ahead here, we make sure the building’s energy performance will work efficiently in the real world, not just on paper.
Construction Stage
The design may look good, but is it working? We provide continued support during the build with services like air pressure testing to make sure energy losses are controlled. We check that the actual construction matches your energy goals, crucial when facing new performance-based targets from local councils or government regulations.
Certification and Handover
Towards the end, final checks are needed to hand over a working, compliant building. We offer EPCs, thermal comfort reviews, and more, depending on your project.
The idea is that we walk with you from the drawing board to completion, helping you get things done properly and without delays.
SAP Consultancy: Clear, Accurate Support in Bristol
For projects in Bristol and the South West, energy performance has an even greater spotlight due to local environmental policies. Our SAP consultancy is set up to make sure you meet local and national building rules like Part L compliance as efficiently and accurately as possible.
SAP assessments are the main tool in the UK for showing how energy-efficient a home is. It covers heating efficiency, insulation, solar gains, and more. If it’s not calculated correctly, it can delay planning permission, increase costs, or result in the building not passing its final checks.
At Ratio Seven, we work with homeowners, housing developers, and architects in and around the Bristol area to make SAP calculations fit the job at hand. Whether it’s a listed building with tight limits or a modern high-spec build, we work to make sure you meet regulations while still hitting your budget goals.
Our SAP consultants don’t just plug numbers into a tool. We explain the impact of design choices, offer ideas when issues arise, and work with you to find the easiest route through. The difference between an average and a good SAP consultancy is in these details. You can also check out our SAP rating assessor service if you need help understanding changes during a build.
Part L Compliance Begins with the Right Knowledge
Part L compliance can feel like a moving target. The rules keep changing, and every year brings new energy targets. Getting this wrong can stop a project in its tracks, especially during final checks when time and money are tight.
That’s why we focus on helping our clients keep up without the guesswork. We not only explain what Part L requires but also how your current plans stack up against it. If you need to adjust, we don’t just point out the problem; we give you real solutions that keep you on track with both performance and approval deadlines.
Whether you’re building a granny flat in a back garden or a new housing development, understanding Part L early makes everything easier. It can affect insulation levels, heating methods, glazing types, and much more.
Built on Experience and Reliability
We’ve supported over a thousand projects across the UK. That includes bespoke one-off homes, large residential sites, and everything in between. Our team brings nearly 30 years of joined-up experience to every job, with qualifications and accreditations that cover all major standards.
We also work hard to keep our service friendly, clear, and cost-effective. We don’t talk in riddles or jargon, and we don’t send people round the houses to get basic answers.
You can rely on Ratio Seven for accurate guidance and quick turnaround times. Most importantly, you get reports and documents that are easy to understand and match exactly what’s required by local planning teams and building inspectors. Check out our construction knowledge articles, including entries on page 3, page 4, and page 5, for more background on current standards.
Adding Real Value to Projects
We always look for ways to protect performance while avoiding unnecessary costs. A good SAP consultancy will help you avoid over-specifying systems or materials that make little difference to the result. With specialist local knowledge and a national scope, we help balance build cost with realistic energy savings.
Our reports are designed to make decisions easy. Clear results, meaningful advice, and tailored support make it easier for anyone, designers, developers or self-builders, to keep the focus on what matters most. And whether it’s a home energy assessment, estate agent support, or employment opportunities, we keep the focus on getting the job done right.
FAQs
What is SAP consultancy, and who needs it?
SAP consultancy supports builders, designers, and homeowners with energy calculations required by Building Control in the UK. These are needed for new builds, extensions, and some conversions.
Do you only work in Bristol?
No, we cover all areas across the UK, but we have lots of experience helping with specific Bristol requirements.
Why is Part L compliance so important now?
Part L focuses on the energy use of a building. New rules are much stricter, and failing them can mean rejected plans, larger bills, or retrofit costs later.
How long do your SAP calculations take?
We usually turn these round quickly, often within a few working days if we have all the details.
Can you help during the build, not just before it?
Yes, we provide support right through the build stage with site checks, redesign advice, and compliance testing.
Do you offer commercial services too?
Yes, we offer SBEM and commercial energy assessments alongside residential work.
Are your reports accepted by councils?
Yes, everything we supply is certified and aligned with national and local planning guidelines.
Helping You Build Better
Whether you’re a homeowner planning an extension or a property developer starting a new estate, energy and sustainability are no longer optional extras. You need to manage compliance from the beginning and make decisions that will stand up to future rules. The right support makes all the difference.
Ratio Seven’s SAP consultancy services in Bristol and beyond help keep your project on track, reduce delays, and deliver real value at every stage. Talk to us early, and let’s build something better together.
