Every Test. Every Certificate. One Team.
Helix Energy delivers the full suite of building compliance tests required for new build and retrofit projects - including air permeability, acoustic, ventilation and water efficiency - carried out by our accredited in-house team.
Expert Compliance Testing for Developments & Buildings
Building compliance testing is a critical stage of construction.
Air permeability, acoustic performance, ventilation and water efficiency all require physical testing and certification before practical completion.
For developers and contractors, the challenge is coordination. Managing multiple testing specialists across a live construction programme creates scheduling risk and leaves gaps in accountability when results fail or arrive late.
Helix Energy removes that problem. Our accredited in-house team carries out the full suite of compliance tests, coordinating with your programme so testing happens at the right time and documentation is ready for handover.
Proven Results
Delivering measurable compliance across new build and retrofit projects.
Everything you need to reach practical completion, from one accredited team.
Our Building Compliance Testing Services
-
![Testing air permeability in a new commercial building]()
Air Permeability Testing - Part L
On-site fan pressurisation testing to confirm your building meets the airtightness standards required under Part L. Results provided same day where possible, with full certification for building control and as-built SAP sign-off.
-
![Man in high vis testing accoustic compliance in new build]()
Acoustic Testing - Part E
Airborne and impact sound insulation testing for new build and conversion projects involving flats, mixed-use developments and rooms for residential purposes. Full test reports produced for building control submission.
-
![Ventilation testing equipment]()
Ventilation Testing - Part F
Commissioning and airflow testing for MVHR, MEV and single room heat recovery ventilation systems. Commissioning certificates issued for building control sign-off, coordinated around your construction programme.
-
![Water running efficiently from tap in kitchen]()
Water Efficiency Certificates - Part G
Water efficiency calculations and certificates for new build dwellings, covering both the standard 125 litre and enhanced 110 litre per person per day targets. Certificates issued for building control and planning compliance.
-
![Testing house for overheating using thermal imaging]()
Overheating Compliance & Assessment - Part O
Simplified and dynamic thermal modelling to demonstrate Part O compliance. Essential for south-facing glazing, apartments, and dwellings with high solar gain potential.
-
![Floorplan on an ipad being altered by an architect]()
SAP Calculations and Part L Compliance
Full SAP 10.2 calculations, iterative modelling alongside your design team, and Part L compliance certification for new build and conversion projects across England and Wales.
-
![Example of an EPC for a domestic property]()
EPC Testing
Accredited EPCs for all domestic and commercial property types. Fast turnaround and nationwide coverage. Required for sales, lettings, and mortgage applications.
-
![House with green living walls]()
BREEAM Certification & Sustainability Reporting
Support for commercial projects requiring Building Research Establishment Environmental Assessment Method. We help teams achieve the credits that matter most, without unnecessary cost or complexity.
// Why Work With Us
Simple, Transparent Process
Getting compliance testing right does not need to be complicated. Here is how we work:
Initial assessment and programme review
SAP modelling and system assessment
On-site testing at the agreed programme stage
Certification and documentation issued
Support with building control queries. No surprises, no delays.
// How it Works
Aligned With Your Goals, Not Just Regulations
Helix Energy works best when engaged early in the programme. Early involvement means we can flag potential issues before they become failures, coordinate testing across multiple plots or phases and integrate seamlessly with your SAP assessor, M&E consultant and main contractor.
When compliance testing is managed by the same team that carried out your energy modelling and EPC work, the process is faster, the documentation is consistent and the risk of late surprises is significantly reduced.
✔ Programme-stage coordination to avoid delays
✔ On-call support through construction
✔ As-built EPCs and SAP updates where required
✔ Direct liaison with building control on your behalf
// Who We Work With
Built for Professionals & Homeowners
ARCHITECTS & CONSULTANTS
Compliance Embedded At All Stages Of Your Design Process
✔ SAP modelling integrated from RIBA Stage 4
✔ Baseline feedback as your design evolves
✔ Part L, Part E and Future Homes sign-off
✔ Honest assessment available for planning conditions
PROPERTY DEVELOPERS
Predictable Compliance Across Your Whole Scheme
✔ SAP calculations for planning and Building Control
✔ Pre-application compliance strategy
✔ On-call support through construction
✔ As-built EPCs and handover documentation
✔ Direct liaison with building control on all site queries
MAIN CONTRACTORS
One Team To Handle All Your Validation Testing For You
✔ On-site testing coordinated around your programme
✔ Single point of contact for all compliance testing
✔ Documentation ready for handover
✔ Fast turnaround on results and certificates
✔ Direct support when building control queries arise
Why Choose Helix Energy For Compliance Testing
All Tests Carried Out Directly
Every test is carried out by our own accredited team. No subcontractors, no coordination gaps, no risk of one specialist not knowing what another has done. One team, one point of contact, one set of documentation.
Accredited and Certified
Helix Energy holds accreditations across all relevant certification schemes. Our testing is carried out to the required standards and our certificates are accepted by building control authorities across the UK.
Coordinated With Your SAP and EPC Work
Where Flint is also providing SAP calculations and EPC assessments, compliance testing is fully coordinated — results feed directly into the as-built SAP and EPC without the delays that come from managing separate specialists.
Programme-Focused
We understand how construction programmes work and we schedule testing to fit. We do not cause delays and we do not produce paperwork that arrives after you need it.
Fully accredited and certified, working to the highest standards across every test and certification.
Common Questions We Are Asked
Still have questions? Take a look at the FAQ or reach out anytime. If you’re feeling ready, go ahead and apply.
-
Air permeability testing is required for all new dwellings and new commercial buildings under Part L of the Building Regulations. Testing must be carried out on completed buildings before the as-built SAP calculation and EPC can be produced. For developments of more than two units, a proportion of the plots must be tested. Helix Energy UK can advise on the testing strategy for your development.
-
If a building fails its air permeability test, remedial work is required to identify and seal air leakage paths before retesting. Common causes include gaps around service penetrations, poorly fitted windows and doors and incomplete sealing at junctions. Helix Energy can provide guidance on likely failure points and support retesting once remedial work is complete.
-
Yes. Part E acoustic testing is required for material changes of use as well as new build projects, including conversions of houses into flats and commercial buildings into residential use. The required performance standards vary depending on the type of conversion. Helix Energy UK can advise on the applicable requirements for your project.
-
Mechanical ventilation systems including MVHR, MEV and single room heat recovery ventilation require commissioning and testing under Part F. Natural ventilation systems do not require formal testing but must be specified and installed to meet the ventilation requirements. Helix Energy UK carries out commissioning and testing for all mechanical ventilation system types.
-
Part O applies to all new residential buildings in England, including flats, houses and student accommodation. It is particularly relevant for south-facing properties, high-glazing designs and apartments where solar gain is a risk. Both simplified and dynamic thermal modelling routes are available depending on the complexity of the project.
-
SBEM (Standard Building Energy Model) is the calculation methodology used to demonstrate Part L compliance for non-domestic buildings. It is required for new commercial, industrial and mixed-use buildings and for major refurbishments of existing non-domestic properties. Helix Energy UK carries out SBEM calculations for building control submission across a range of commercial building types.
-
Yes. Helix Energy UK carries out air permeability, acoustic, ventilation, overheating, water efficiency and energy modelling directly, using our own accredited team. We can manage all compliance testing for a development under a single contract, coordinated with your SAP and EPC work where required.
Planning a development that needs compliance testing?
Get in touch early and we can build a testing programme around your construction schedule. No obligation, no jargon - just clear advice on what you need and when.
We work with developers, architects and main contractors across the South West and South East. If you have a compliance testing requirement, we would be happy to help.