Costs are tailored to the size of your project within the following parameters:

Part L

Basic SAP Assessment
for a small single story extension

from £150

New build properties are priced on floor size and project complexity

from £195

Thermal bridging calculations
for standard calculation method

from £25


Part O

Overheating Calculation
for a small single storey extension

from £100

New build properties are priced on floor size and project complexity

from £150

EPC Certification


from £70

Get started with a more detailed quote for your project by filling in the form below

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