Ventilation for new builds, extensions and lofts in Scottish Islands

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.

We carry out ventilation for new builds, extensions and lofts across the Scottish Islands, including Stornoway. Prices use Scotland rates. Work here is by arrangement, with travel quoted in writing first.

New builds & extensions in the Scottish Islands at a glance

Area: Scottish Islands, Scotland
Towns listed: 1, largest Stornoway
Postcode districts: HS2 and HS1
Price region: Scotland
Survey: By arrangement, travel quoted first

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 the Scottish Islands

Ventilation for new builds, extensions and lofts guide prices in the Scottish Islands
Work	Guide price
MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms (per home)	£4,750–£7,650 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–£285 inc VAT
MVHR or MEV commissioning test, every terminal measured and recorded (per system)	£235–£380 inc VAT

These ranges use our Scotland rates. Prices include VAT at 20%. You get a fixed written price before any work is booked. Travel is quoted separately for this area.

Signs it is time to call us

Ceilings are about to be boarded
Building control has asked for a ventilation strategy or commissioning sheet
Your SAP assessor has assumed a particular ventilation system

Rules in Scotland

Scottish projects follow the Technical Handbooks (section 3, Environment) under the Building (Scotland) Regulations, usually with a building warrant. We work to the Scottish ventilation standards and record the airflow achieved.

How the job runs

Drawings
Design
First fix
Second fix
Commission

Towns we cover in the Scottish Islands

Stornoway

Questions about ventilation for new builds, extensions and lofts in the Scottish Islands

Which rules apply to ventilation in the Scottish Islands?

In Scotland, ventilation is covered by section 3 of the Building Standards Technical Handbooks. Private rented homes must meet the Repairing Standard, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.

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.

How much does MVHR cost in a new build?

For a 3 to 4 bedroom new build, MVHR fitted at first fix usually costs £4,950 to £7,950 including VAT. VAT on new-build work can differ, so we confirm the treatment on your quote.

Which towns in the Scottish Islands do you cover?

All of the Scottish Islands, including Stornoway. If your town is not listed, send the postcode and we will confirm.

Are prices different in the Scottish Islands?

Our guide prices are adjusted by region. In the Scottish Islands we use Scotland rates, so MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms is typically £4,750 to £7,650 inc VAT per home.

Ventilation for new builds, extensions and lofts in the Scottish Islands