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Blog Post 20 May 2026

Viewing a house? Here’s what our energy saving experts say you should look out for

With energy costs still high, it’s important to think about your long-term energy bills when looking at houses. You might get caught up in the charm of a house, only to find it costs a more to run than your previous home. 

Our energy experts share their top tips on what to do before, during and after viewing a house. 

Think about what kind of home you want 

Before you start viewing houses, think about the kind of house you’re likely to need. Your choice of home could have a big impact on your future energy bills. 

For example, an older house might be charming but will probably need more work to make it energy efficient, such as home insulation. And with more work comes more cost. Meanwhile, a new build is more likely to have energy efficient home improvements installed as standard. 

Also, bigger houses are likely to cost more to run since there’s much more space that needs heating. 

Ideally, you’ll find a home that’s already energy efficient. But if not, think about if you’d be willing to make upgrades in the future, and factor that into the overall cost of the house. 

Check the home’s EPC recommendations

Look at the energy performance certificate (EPC) of the house before you go to view it. The EPC rating gives you information about the property’s running costs. It also gives recommendations of what energy efficient home improvements the house needs. Use this to compare the energy efficiency of different homes, as well as how much they might cost to run. 

The recommendations laid out in the report can also help you look out for potential issues, such as a lack of insulation. 

When comparing the new house with your current home, look at the running costs on your existing EPC, rather than your current energy bills. This is so you’re comparing numbers that have been calculated in the same way, making it a fairer comparison. 

Check for signs of damp and draughts

When you’re viewing the house, pay close attention for signs of: 

These might be a symptom of bigger, more expensive problems later. They’re also likely to lead to higher energy costs and will make the house less comfortable to live in. 

In many cases, problems with damp and mould need to be fixed before you can install other energy saving measures like insulation. 

It’s also worth asking for relevant documents for any home upgrades that the house already has. This includes: 

  • installation certificates 
  • warranties 
  • service records 

Look at the property’s heating system

It’s worth asking the seller these questions: 

  • How old is the current heating system
  • How effective is it at keeping the house at a comfortable temperature? 
  • How much are your current energy bills? 

If the house has a boiler that’s reaching the end of its life, for example, you’ll need to factor in the cost of a replacement. 

Also, more and more homes are using renewable or low carbon technology such as:

It’s important to understand how these might affect your day-to-day running of the house and your potential energy costs. This is especially important if you’re not familiar with these newer technologies. 

For more information, read our guide to viewing a house that has a heat pump installed

Have an idea about your first energy efficient home improvements

It’s a good idea to think longer term and what you might do to upgrade the property’s energy efficiency. This way, you can factor any extra costs into your overall budget. The EPC report is a great place to start as it will already have a list of recommended upgrades. 

There are several schemes that can help fund the cost of making these improvements. For more information, read our guide to what energy grants are available.

After you get the keys

You can start saving energy from the day you move in. Here are our top tips: 

For more information and tips, read our moving home energy checklist.

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Last updated: 20 May 2026