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Sustainable building services for ARCHITECTS, SELF-BUILD and DEVELOPERS/BUILDERS. Low Carbon Box are accredited assessors and consultants for energy assessments, Passivhaus, air tightness testing, Planning energy statements and more.

Air Tightness Testing - Self Build House

Air Tightness Testing learn More

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PassivHaus learn More

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Over Glazed Extensions learn More

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Planning Energy Statements learn More

SAP Calculations

SAP Calculations learn More

SBEM energy_assessments

SBEM Energy Assessment learn More

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Extract Fan Testing learn More

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Water Calculations learn More

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Blog,Case Studies,Projects

Energy Statement for South Oxfordshire...

From the 1st of April 2021, planning applications to South Oxfordshire District Council must be supported by a Planning...

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Blog

Alternatives to aircrete blocks

So you are going to start building your new house or property. The energy assessor has approved the design....

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Blog

Thermal Bridge Details

When carrying out a house design then to make it much easier for a SAP Calculation, it is really...

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Blog

What is a U value?

A U value is the measurement of heat loss (or heat flow) per m2 of surface area per 1...

opening areas in an extension

Blog

Does your non domestic extension...

Does your non domestic extension need an SBEM? Check ouyt this simple checklist below to see.

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Blog

Air Tightness Testing Example

Low Carbon Box provide an overview of an air tightness testing example so you can see what to prepare...