Modern timber-clad energy-efficient house with a large garden

Group E · New build, extension and structural wall systems

Passivhaus and low-energy build

Thermal-bridge-free detailing, airtightness and MVHR for very low energy homes.

Discuss your project Check my EPC

Priced after survey

Installed, inc. VAT

Every job like this is different, so we measure first and give you a fixed written quote. The price depends on:

The area and access
What's there now and its condition
The system and finish you choose

Discuss your project

No obligation — your survey confirms what suits and what it costs.

Best for: Premium new builds
Guarantee or standard: PHPP modelling, air test
Time on site: Set by the build programme — agreed with you and your designer.
Typical price: Priced after survey

What it is

What is passivhaus and low-energy build?

Thermal-bridge-free detailing, airtightness and MVHR for very low energy homes.

Best for: Premium new builds.

Who it suits

Which homes is passivhaus and low-energy build suitable for?

Is my home suitable?

Pick your property type for a straight answer on passivhaus and low-energy build.

What type of property is it?

Guidance only — every home is different, and a survey confirms what suits yours.

Houses

Flats and blocks of flats

Commercial and public buildings

Usually suitable Depends — a survey confirms

Not usually suitable for 6 property types

Park and mobile home — Park and mobile homes need specialist systems, which we arrange through a partner rather than standard measures.
Converted flat — New-build systems are for new buildings and extensions, not a retrofit for an existing flat.
Purpose-built flat — New-build systems are for new buildings and extensions, not a retrofit for an existing flat.
Ground-floor, top-floor flat or maisonette — New-build systems are for new buildings and extensions, not a retrofit for an existing flat.
Mansion block — New-build systems are for new buildings and extensions, not a retrofit for an existing flat.
Ex-local-authority flat or maisonette — New-build systems are for new buildings and extensions, not a retrofit for an existing flat.

Materials and brands

What we use

Thermal-bridge-free detailing, airtightness and MVHR for very low energy homes.

Heat, bills and EPC

What it does for your heat loss, bills and EPC

In a new build the walls, roof and floor are designed together to meet Building Regulations Part L, and the SAP calculation shows the result before you build. Better airtightness and fewer thermal bridges mean lower running costs from day one, and a strong EPC on completion.

See the EPC points and savings for your home in the EPC plannerU-value before and after, typical heat and bill saving, and EPC points — worked out for your property.

Price

How much does passivhaus and low-energy build cost?

Priced after survey

Jobs like this vary too much for a fair online price, so we measure first and give you a fixed written quote — with no obligation.

VAT on this work

Insulation installed in homes in Great Britain is zero-rated for VAT until 31 March 2027. Other parts of a job like this — such as a new roof covering, structural work or waterproofing — may be standard-rated. Your quote shows the split.

Discuss your project

What to expect

Time on site, disruption and approvals

Time on site

Set by the build programme — agreed with you and your designer.

Disruption

Part of a new build or extension project rather than work in an occupied home.

Planning and building control

Planning and building control for the project, design-stage SAP calculations, and the system's certificate (with warranty provider acceptance where relevant).

Guarantee and standard

PHPP modelling, air test. The guarantee and certification for your job are confirmed in writing in your quote.

Questions