Ventilation for new builds, extensions and lofts in Suffolk

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.

Suffolk 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 Suffolk at a glance

Area: Suffolk
Towns listed: 12, largest Ipswich
Postcode districts: IP32, CB9, CO12, IP10, CO8 and CO10
Price region: East of England
Survey: Free survey (UK mainland)

How we do it

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 Suffolk

Ventilation for new builds, extensions and lofts guide prices in Suffolk
Work	Guide price
MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms (per home)	£5,200–£8,350 inc VAT
Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan)	£360–£625 inc VAT
Airflow testing and commissioning sheet for extract fans (up to 6 fans) (per home)	£150–£310 inc VAT
MVHR or MEV commissioning test, every terminal measured and recorded (per system)	£255–£415 inc VAT

East of England rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.

Signs it is time to call us

You are adding a bathroom or kitchen in an extension or loft
You are insulating and re-windowing an existing home
A self-build with an airtightness target

Rules in England

English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.

How the job runs

Drawings
Design
First fix
Second fix
Commission

Towns we cover in Suffolk

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

Which towns in Suffolk do you cover?

All of Suffolk, including Lowestoft, Bury St Edmunds, Haverhill, Felixstowe and Sudbury. If your town is not listed, send the postcode and we will confirm.

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.

Who signs off the ventilation commissioning?

The installer measures the airflows and completes a commissioning sheet, which goes to building control; for new dwellings in England that is expected within five days of completion of the commissioning.

Are prices different in Suffolk?

Our guide prices are adjusted by region. In Suffolk we use East of England rates, so MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms is typically £5,200 to £8,350 inc VAT per home.

Is the survey free in Suffolk?

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.