Who we help · Houses
New build or self-build
Usual measures: ICF, SIPs, full-fill cavity, Part L/Future Homes design, SAP calcs. Watch-out: Design-stage SAP and air testing.
Priced after survey
SAP calculation (new build or extension)
£150–£350 per flat
Design SAP, as-built SAP and EPC for new dwellings.
Discuss your buildA written quote follows the survey.
At a glance
Construction, heat loss and watch-outs
- Typical construction
- Timber frame, masonry, ICF, SIPs
- Where heat is lost
- Usually low
- Usual measures
- ICF, SIPs, full-fill cavity, Part L/Future Homes design, SAP calcs
- Watch-outs
- Design-stage SAP and air testing
Recommended
The insulation we usually recommend
ICF (insulated concrete formwork)
Interlocking EPS blocks filled with concrete on site — structure and insulation in one.
SIPs (structural insulated panels)
Factory-made insulated panels for walls and roofs.
Cavity wall new build
Full-fill mineral wool batts or partial-fill PIR in new masonry cavities.
Timber frame with insulation
Closed-panel timber frame with mineral wool or wood-fibre and an airtight membrane.
Thermal blocks
Aircrete or insulated blocks for the inner leaf.
Passivhaus and low-energy build
Thermal-bridge-free detailing, airtightness and MVHR for very low energy homes.
Grants and savings that may help
- ECO4Closes in 73 days
Up to fully funded; paid by energy suppliers per measure
Grant via local councils (£960m nationally in 2026/27)
- Social Housing Fund
Landlord-led bids
Saves 20% VAT
- Local schemes
Varies
Eligibility depends on your circumstances and is confirmed by evidence and the funder or council.
0% VAT on energy-saving materials
Insulation, solar panels, batteries and heat pumps installed in homes in Great Britain are zero-rated for VAT until 31 March 2027. Windows and doors are not included.Houses
Other property types
- Detached house
- Semi-detached house
- End-of-terrace
- Mid-terrace
- Townhouse
- Mews house and cottage
- Detached bungalow
- Semi and terraced bungalow
- Chalet and dormer bungalow
- Period home
- 1930s home
- Post-war and ex-council house
- Non-traditional / system-built
- Listed building or conservation area
- Farmhouse, barn conversion or rural home
- Park and mobile home
- Every property type
Begin your project
Talk to us about your project
Tell us about the building and we'll arrange the right survey, then a priced, phased proposal.