New builds, extensions and testing, Gwynedd and Anglesey
Ventilation for new builds, extensions and lofts in Gwynedd and Anglesey
Part F designs, MVHR or extract installs and the commissioning paperwork building control needs, across Gwynedd and Anglesey.
- From £4,700 inc VAT per home
- Free survey
New homes, extensions and loft conversions need ventilation that meets the building regulations and is tested before sign-off. We design the system, install it at the right stage of the build, measure the airflows and provide the commissioning information building control asks for.
Gwynedd and Anglesey has every kind of building, from old terraces to new estates and business parks, and every job is designed around the building in front of us, not a standard kit.
New builds & extensions in Gwynedd and Anglesey at a glance
- Area
- Gwynedd and Anglesey, Wales
- Towns listed
- 2, largest Bangor
- Postcode districts
- LL58, LL65 and LL57
- Price region
- Wales
- Survey
- Free survey (UK mainland)
What the work involves
We work for self-builders, small developers, builders and architects. Fitting ducts at first fix is far cheaper than retrofitting, so it pays to involve us before the ceilings go up.
Extensions and lofts
Extract for new bathrooms and kitchens, background ventilation for new rooms.
Commissioning only
Testing and paperwork for systems installed by others.
MVHR for new builds
Design, first fix, second fix and commissioning for whole-home heat recovery.
Guide prices in Gwynedd and Anglesey
| Work | Guide price |
|---|---|
| MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms (per home) | £4,700–£7,550 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £330–£575 inc VAT |
| Airflow testing and commissioning sheet for extract fans (up to 6 fans) (per home) | £140–£280 inc VAT |
| MVHR or MEV commissioning test, every terminal measured and recorded (per system) | £235–£375 inc VAT |
These ranges use our Wales rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
When to get it looked at
- A self-build with an airtightness target
- Ceilings are about to be boarded
- Building control has asked for a ventilation strategy or commissioning sheet
Rules in Wales
In Wales, ventilation follows the Welsh Approved Document F rather than the English version, with building control checking notifiable work. We design to the Welsh rates and commission mechanical systems so the results can be recorded.
How the job runs
- Drawings
- Design
- First fix
- Second fix
- Commission
Towns we cover in Gwynedd and Anglesey
Questions about ventilation for new builds, extensions and lofts in Gwynedd and Anglesey
Which towns in Gwynedd and Anglesey do you cover?
All of Gwynedd and Anglesey, including Holyhead and Bangor. If your town is not listed, send the postcode and we will confirm.
Can you just test a system someone else installed?
Yes. We can commission and test systems installed by others, and report any issues we find.
Do loft conversions need ventilation?
Yes. New bedrooms need background ventilation, and a new en-suite or bathroom needs extract to outside.
Are prices different in Gwynedd and Anglesey?
Our guide prices are adjusted by region. In Gwynedd and Anglesey we use Wales rates, so MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms is typically £4,700 to £7,550 inc VAT per home.
Is the survey free in Gwynedd and Anglesey?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Other services in Gwynedd and Anglesey
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.