Helping You Navigate New Build Compliance with Ease
At Ratio Seven, we work closely with new build compliance testing, developers, architects, and self-builders across the UK to make sure your projects meet the latest building regulations. With over 20 years of experience and fully accredited services, we help you at every stage of your journey, from early design to final approvals.
If you’re building new homes or residential units, you’d already know how important building compliance is. From getting SAP calculations done to passing your air test, every step matters. We aim to remove the stress from that process and help keep you on track for timely completion certificates and legal occupancy.
Better yet, we don’t just help ensure compliance; we help lower costs, too. Whether you’re working on a small extension or a multi-unit housing scheme, we guide you through all technical steps while keeping material quality high and unnecessary spending low.
Core Services Supporting Your New Build Compliance
Getting your new build over the finish line means hitting all the right targets. Air pressure, insulation values, ventilation, and heating systems all play a part in whether your build passes official inspections. That’s where we come in.
Air Tightness Testing for Building Regulations
Air tightness testing, sometimes called air pressure testing, checks how well a building prevents unwanted air leakage. It’s a key part of complying with Part L of the building regulations, which focuses on energy use and insulation.
Our qualified engineers carry out air-tightness testing for both residential and commercial buildings. This is especially needed for new builds or refurbishments that require certification before sign-off. We offer nationwide testing with flexible appointments to help you stay on schedule.
Our process includes:
- Pre-test advice to help you get ready
- On-site testing using calibrated equipment
- Instant feedback and clear reporting
- Free re-test if the building fails the first attempt
We’re here to make sure your airtightness meets the required standards, avoiding delays and extra costs later on.
Accurate SAP Calculations for Planning Success
Before you even break ground, you’ll likely need SAP calculations. These are essential energy assessments that rate everything from heating systems to heat loss through windows, walls, and roofs. We help you run these calculations right at the start, guiding your architectural and material decisions so your finished project passes the first time.
SAP calculations help with:
- Predicting energy use
- Planning ventilation and lighting systems
- Meeting planning and building control requirements
- Reducing CO₂ emissions from the beginning
We compile reports in a format your building control officer will approve, and can start these as soon as you have your floor plans ready.
We also track government standards, such as those aimed at reducing national carbon output. You might find our recent post on the UK’s carbon emissions targets useful: Carbon Emissions Report UK.
Smarter Build Cost Advice
We don’t just focus on ticking boxes. We also help you find smarter ways to build by cutting unnecessary expenses. Our team looks at where money is being lost through inefficient designs, over-specified products or waste during construction.
Through accurate early-stage planning and expert advice, we help avoid the financial traps that often pop up later. We always aim to keep material and construction quality high, so nothing slips through the cracks when it’s time for inspections.
New Build Compliance Testing from Start to Finish
Everything we do is aimed at helping you pass inspections and avoid frustrating setbacks. That means planning well and working closely with building control officers from day one. We know building regulations can feel like a maze, especially as rules evolve, but getting it right at the start saves money and stress later on.
Our team handles new build compliance testing as a simple, step-by-step journey.
Here’s what that often looks like:
- Design stage: We review your plans for energy and insulation rules.
- SAP calculations: Provided with early guidance to shape the build.
- On-site prep: We coordinate with your team before testing.
- Air tightness testing: Done when your build is nearly done.
- Certification: We submit the reports you need for sign-off.
With projects involving more than one unit, we help shape cost-effective test schedules without delaying handovers. We often carry out multiple tests on the same visit to save you money and avoid unnecessary repetition.
We’ve even put together a helpful guide for builders and homeowners alike: 10 Tips for a Successful Building Regulations Inspection.
More Than Just Air and Energy Testing
New build compliance isn’t all about air tightness and SAP. We also support builders in other required testing, like:
- Sound insulation testing
- Ventilation flow rate testing
- Water use efficiency evaluations
These additional reports are sometimes overlooked but are equally needed for final approval. Our goal is to help you meet every compliance standard smoothly, without the guesswork. Every build is different, and we tailor our advice to suit your plans and technical specs.
Our long-standing relationships with building control officers across the country mean we know what information they need and how they want to see it.
How Our Client-Focused Process Saves You Time and Money
Every service we offer is built around making life easier for builders and developers. We design our process to save on cost, time and back-and-forth communication delays.
We know how project timelines work, and we don’t like holding things up. That’s why we aim to:
- Offer appointments that suit your build schedule
- Deliver certified reports quickly
- Give you direct access to qualified engineers
- Offer multi-test discounts
For larger sites, testing multiple plots or building types, we offer competitive pricing and flexible planning. We’re also happy to help your teams learn more about compliance testing. You can even see career opportunities with Ratio Seven here: Work For Us.
Our latest updates and industry know-how are shared regularly on our blog.
Answers to the Most Common Questions
When is the best time to book air tightness testing?
We recommend booking your test just before the completion stage, once all floors, ceiling finishes and sealing are in place, but before decorating begins.
Will I get a certificate if I pass?
Yes. We send you a digital certificate confirming your air test result. This is what councils need for Part L sign-off.
Do you offer discounts for multiple homes?
Yes. If you’re testing several plots, we can offer pricing packages that include same-day testing and flexible reporting.
Can I get advice before the test?
Of course. We provide detailed preparation guidance before we arrive, and we’re available for consultation during design reviews.
What if the test result fails?
We offer a free re-test after allowing you time to seal any identified issues. We aim to help you pass without delays.
Do you cover commercial buildings too?
Yes. Our team has experience with shops, offices, and public sector buildings. Get in touch, and we can plan a visit that suits your schedule.
Why Builders Rely on Ratio Seven for New Build Compliance
When builders choose Ratio Seven, they’re getting more than test results. We offer qualified advice at every stage, clear pricing, and quick, no-fuss scheduling. Our services are designed to get your buildings signed off without delay, while also keeping future energy bills low through smarter compliance choices.
From the first drawings to the final certificate, we help guide you through it all. That means no panicking when site inspectors visit. No long waits for documents. And no nasty surprises.
Bring Confidence to Your Next Build Project
If you’re in the middle of a build or planning your next project, our team is ready to help. From handling testing logistics to offering clear answers when things get complicated, we keep projects moving in the right direction.
Whether you need air tightness testing, SAP calculations or guidance during planning, Ratio Seven ensures your new build compliance is handled with care. Let us help get your build across the finish line.
Ready to make your project a success? Get in touch now and take the hassle out of passing your inspections.
