When you book an Energy Performance Certificate (EPC) assessment, a qualified EPC assessor will visit your property to carry out a detailed inspection. Their goal is to gather the information needed to calculate your property’s energy efficiency rating and recommend improvements where possible.

Here’s exactly what to expect during a home visit from an EPC Nationwide UK assessor:

1. Visual Inspection of Key Areas

The assessor will conduct a non-intrusive, visual inspection of your property. They will examine:

  • Walls: Checking for insulation type (cavity or solid walls) and insulation levels.
  • Roof and Loft Spaces: Inspecting loft insulation if accessible.
  • Windows and Doors: Recording whether they are single, double, or triple glazed.
  • Heating Systems: Looking at the boiler type, radiators, controls (thermostats, timers), and overall heating setup.
  • Hot Water Systems: Checking the hot water cylinder, if present, including insulation.
  • Lighting: Noting how many low-energy (LED or CFL) bulbs are installed.

2. Measuring the Property

The assessor will measure the dimensions of your property, including:

  • Overall floor area
  • Ceiling heights
  • Wall thicknesses
  • Window sizes and orientation

These measurements are important to accurately calculate the energy use and heat loss potential of your building.

3. Gathering Construction Details

The assessor will also record details about:

  • Building age and construction materials
  • Extensions, conservatories, or modifications
  • Ventilation systems (including extractor fans and mechanical ventilation)

Understanding the property’s construction helps determine how energy is retained or lost.

4. Checking for Energy-Saving Installations

If your property has solar panels, underfloor heating, heat pumps, or other renewable energy technologies, the assessor will include these features in the EPC assessment. These can significantly improve your final energy rating.

5. Recording Data for Software Calculation

All the gathered information is entered into approved government EPC software, which calculates:

  • The Energy Efficiency Rating (A to G scale)
  • The Environmental Impact Rating (carbon emissions)
  • Recommendations for cost-effective improvements

Important to Know

  • The assessment is non-invasive — no drilling, no dismantling, and no disruption to your property.
  • It usually takes between 30 minutes and 2 hours, depending on the size and complexity of your property.
  • If documentation is available (such as proof of wall insulation or a new boiler installation), showing it to the assessor can help ensure the most accurate rating.

After the Visit

Once the inspection is complete, the assessor will:

  • Upload the data to the EPC register
  • Generate your official EPC
  • Send it to you, typically within 24–48 hours

Book Your EPC Assessment Today

At EPC Nationwide UK, all our assessors are fully qualified, accredited, and committed to providing a fast, professional service.

👉 email johnpaulhood2015@gmail.com or call 800 099 6013 and let us help you keep your property compliant, energy-efficient, and market-ready!