Building your own home? We'll make sure it passes, first time.
Airtightness, ventilation, and BER — engage us early and we'll specify your complete compliance plan before you even start building.
Why Forsah is the right fit for your build.
A personal introduction from Sean Collins, Forsah's Commercial Director
Self-building is stressful enough. Compliance shouldn't add to it.
You're not a developer with a team behind you — you're doing this once, and you need it done right. Here's how we make that easier.
Plain-English Guidance
Not sure what Part F or Part L actually require? We'll explain what your build needs in plain English, not regulation-speak.
Direct Access to Us
No call centre, no account manager juggling 50 clients — you deal directly with the people testing your house.
Fits Around Your Site
We work around your build schedule, not the other way round — and if something fails, we tell you exactly what to fix.
WhatsApp Support
Question about a result, or what your Assigned Certifier needs from us? Message us directly, no waiting on hold.
We bring everything to you.
Airtightness rig, ventilation testing kit, BER equipment — one visit, everything needed on the day, no waiting on separate contractors to show up.
Everything your Completion Certificate needs, from one team.
Rather than coordinating separate contractors for each test, one Forsah visit covers the full compliance picture — so nothing gets missed, and nothing holds up your handover.
Airtightness Testing
The core Part L test — confirms your build meets its target air permeability before Building Control will sign off.
Ventilation Validation
Confirms your MVHR or MEV system is actually delivering the airflow rates your design assumed — not just installed, but working.
Provisional BER & Design Review
Engage us before you break ground and we'll specify exactly what insulation and renewables your design needs — one complete plan for compliance from day one.
Final BER Assessment
Your official Building Energy Rating at completion — required by law before you can sell, let, or in most cases even occupy the finished house.
Why one team matters: when the same people test your airtightness and commission your ventilation, there's no gap for things to fall between — if one measure affects another, we catch it on site, not after your Assigned Certifier sends it back.
Got a question about your build? Ask before you book.
Not sure what your house needs, or what your Assigned Certifier is actually asking for? Message us directly — free, no pressure.
Ask Us Anything — For Free
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