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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
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Eco Build Property
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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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Projects / Blogs

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Blog
Energy Assessor & Sustainable Building...
Energy Assessor & Sustainable Building Consultant – Job Vacancy Job Description Low Carbon Box are a Sustainable Buildings Consultants. We do...
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...
alternative-to-airceret-blocks-720x360
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...
U-value-1-768x443
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.