Ventilation for new builds, extensions and lofts in Clwyd

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.

Our team is based in Great Barr, Birmingham, and we work throughout Clwyd, from Deeside, Colwyn Bay, Flint, Rhyl and Hawarden. Surveys for new installations are free on the UK mainland, with a written quote afterwards.

New builds & extensions in Clwyd at a glance

Area: Clwyd, Wales
Towns listed: 13, largest Wrexham
Postcode districts: CH5, CH6, LL11, LL12, CH5 and CH7
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.

MEV or dMEV

Continuous extract systems where MVHR is not specified.

Extensions and lofts

Extract for new bathrooms and kitchens, background ventilation for new rooms.

Commissioning only

Testing and paperwork for systems installed by others.

Guide prices in Clwyd

Ventilation for new builds, extensions and lofts guide prices in Clwyd
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

Building control has asked for a ventilation strategy or commissioning sheet
Your SAP assessor has assumed a particular ventilation system
You are adding a bathroom or kitchen in an extension or loft

Rules in Wales

Wales has its own Part F ventilation guidance, published by the Welsh Government, and work is checked by building control. Extract rates and commissioning are checked against the Welsh guidance on every job.

How the job runs

Drawings
Design
First fix
Second fix
Commission

Towns we cover in Clwyd

Questions about ventilation for new builds, extensions and lofts in Clwyd

Which towns in Clwyd do you cover?

All of Clwyd, including Deeside, Colwyn Bay, Flint, Rhyl and Hawarden. If your town is not listed, send the postcode and we will confirm.

Do loft conversions need ventilation?

Yes. New bedrooms need background ventilation, and a new en-suite or bathroom needs extract to outside.

When should MVHR be fitted in a new build?

MVHR ducts should go in at first fix, after the structure and before plasterboard. Planning it at design stage avoids clashes with joists and steels.

Are prices different in Clwyd?

Our guide prices are adjusted by region. In Clwyd 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 Clwyd?

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.