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Building Passivhaus – How much money will I save on running costs?

Find out more about our approach to this building scenario.

In the UK the average 85m2 home spends almost £600 a year on heating and around £1350 on energy as a whole. It may seem incredible but reducing your heating bill to the cost of a cup of tea per day is entirely possible, saving many hundreds, even thousands of pounds per year for many.

Some Passivhaus buildings cost around 14p per m2 per year to heat which would equate to £11.90  in an 86m2 home, something that is to be dreamed of by owners of the average house in the UK.

In addition to this reduction in heating, use of rainwater or even grey water can reduce the cost of water bills, Solar thermal panels can reduce water heating costs and PV can help reduce electricity costs.

Beyond this it is down to the appliances and systems used within the building which determine energy consumption. If you’re building a sustainable house then it also needs low energy appliances and fittings.


If you want to find out more about how to effectively manage your sustainable building project, check out The Self-Build Series. This series of guides has been put together to you understand sustainable construction. We hope you find them useful!

CPD Training

We offer CPD training for architects practices across Devon and Cornwall.

Software Modelling

We offer dynamic heat and moisture modelling as well as condensation risk analyses.

Building Plan Review

If you have some plans and would like our opinion on which materials would be the best for you, contact us.


Back to Earth is a natural building material supplier. We're not your typical builders'​ merchant though and instead work closely with our clients during the planning, designing and building phases of projects.

Back to Earth is a proud signatory of the Anti-Greenwash Charter:

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