Ventilation for new builds, extensions and lofts in Cumbria

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.

Every job in Cumbria gets a written quote before it starts and a commissioning record when it finishes. We cover Penrith, Ulverston, Carlisle, Barrow-in-Furness and Kendal and the villages around them.

New builds & extensions in Cumbria at a glance

Area: Cumbria
Towns listed: 7, largest Carlisle
Postcode districts: LA9, CA24, CA25, CA14, CA15 and CA10
Price region: North West
Survey: Free survey (UK mainland)

What ventilation for new builds, extensions and lofts involves

Extensions and loft conversions have their own triggers: a new wet room needs extract, a new habitable room needs background ventilation or a connection to the ducted system, and energy-efficiency work can mean the existing home needs more ventilation too. 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 Cumbria

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

Guide prices using North West rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.

Signs it is time to call us

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 England

English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.

How the job runs

Drawings
Design
First fix
Second fix
Commission

Towns we cover in Cumbria

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

Is the survey free in Cumbria?

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.

Does an extension need extractor fans?

A new kitchen, bathroom, utility room or WC in an extension needs mechanical extract to meet Approved Document F in England, and new habitable rooms need background ventilation or a connection to a ducted system.

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.

Which rules apply to ventilation in Cumbria?

In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.

Which towns in Cumbria do you cover?

All of Cumbria, including Penrith, Ulverston, Carlisle, Barrow-in-Furness and Kendal. If your town is not listed, send the postcode and we will confirm.