The Complete Guide to Buying or Selling a House with Solar Panels

solar panels on a home with a for sale sign

By 9 min read


Solar panels save the average household £339 per year

Homes with panels typically sell for 4.1% more than those without

Solar energy can cut your annual CO2 footprint by one tonne


This is your lucky day.

Whether you’re purchasing or parting with a solar-powered house, you’re set to make a sizable profit.

Solar panels increase your property’s value with their impressive money-saving and eco-friendly capabilities.

And as a buyer, solar panels are a golden goose that you didn’t have to raise.

Installation costs are by far the worst part of getting solar panels – at an average of £339 per year – but aside from that, they’re purely profitable.

Here are the best ways to buy and sell a property with solar panels, and how to deal with any problems you encounter along the way.

And if you find yourself wanting to buy solar panels at any point, you can find the best deal for your home by using our free comparison tool.

solar panels on a home with a for sale sign

Should you buy a house with solar panels?

You absolutely should – in almost all cases, it makes total financial and environmental sense. Let’s dive into why.

You’ll save and make money

Solar panels provide free energy all year round, saving the average household £8,466 over the course of their lifetime.

Usually, it takes an average of 14.2 years to break even on solar panels – but if they’ve already been installed before you move in, you won’t have to pay the £4,800 upfront cost.

Instead, you’ll start making and saving money immediately.

You’ll only need about half of the electricity you’d otherwise use from the National Grid, and you’ll regularly receive money from the Smart Export Guarantee (SEG).

That means that at the end of every year, you’ll have an average of £339 extra in your bank account.

Your new home may have had its solar panels installed while the government’s Feed-in Tariff was active, in which case you’ll work out whether you’d be better off continuing to receive those payments, or switching to the SEG.

They fight climate change

Solar panels will save the average home around one tonne of CO2 per year.

That’s 15% of your annual carbon footprint, wiped away just like that – and without having to do anything except keep an eye on them.

They need very little maintenance

Whatever the weather or time of year, your solar panels will produce electricity which you can use to power your life.

All you’ll need to do is make sure nearby trees don’t start covering them, and get a list of maintenance checks from the installer.

You’ll only have to carry out these tasks every so often, to check that the machinery is working, and to see whether you need to replace the inverter.

You can even clean them yourself – and once per year should be enough.

Buying a house with fully owned solar panels

This is the best scenario for all concerned.

In almost all cases, any Feed-in Tariff agreements should transfer to the new owner, and likewise, it should be simple to take on a Smart Export Guarantee contract signed by the previous owner.

After the house sale is completed, all maintenance costs will also transfer to the new owner – but that’s the same with any part of your new home.

Buying a house with leased solar panels

During the heady days of the Feed-in Tariff, many companies would install solar panels for free.

In exchange, they’d lease that roof space from you, so they could receive the government payments themselves.

But buying a house like this can be trickier, as some mortgage lenders will reject your application if part of the property is owned by a company – and you can’t buy the house without the panels.

A relatively untroubled purchase is certainly still feasible, though.

You shouldn’t have any problems if:

  • The installation company is accredited by the Microgeneration Certification Scheme
  • The installation itself was approved and is insured
  • You can remove the panels without incurring penalties for missed Feed-in Tariff payments

Your solicitor will go through the lease details and contact the installation company to see whether they’ve signed the panels over to an agent.

If they have, the agent may charge a fee when the property is sold. Who pays that fee is up to you to decide with the seller.

Your solicitor will also check whether the house’s owner needs permission from the installation company to extend the property, or even to sell it.

There’s no reason why the installation company wouldn’t agree to a request to sell the house – but if the company has ceased to exist, it can be difficult to find the current owner.

In all cases, listen to your solicitor’s legal advice.

Questions to ask when buying a house with solar panels

Get some answers to the following questions before you commit to your new home’s solar array. You should have all the information about any potential inconveniences before you start using the panels.

But to be clear, there are no disadvantages of acquiring a house with properly fitted solar panels – which leads us to the first question.

Are the solar panels securely fitted and effectively connected?

If you have to pay someone to ensure your panels won’t crash through the roof or slide off into the street, it’ll eat into your solar profits.

Likewise, if the panels aren’t connected properly, you won’t receive as much electricity as you should – and neither will the company you’re selling your extra power to for SEG payments.

Get your surveyor to make sure the solar panels have been flawlessly installed.

What are the installation details?

Ask when the panels were installed, because this will give you an idea of how effective they’ll be at providing you with clean, free energy, and how much longer they’ll be able to do it for.

Also ask which company carried out the installation, as that team will be your first port of call for maintenance and troubleshooting.

Lastly, ask for the contract, to see if there are any extra services included.

When does the warranty run out?

Generally, a solar panel warranty will last for 25 years. If that end point is coming up soon, you’ll still receive free, money-making energy until then – but it’s worth keeping in mind.

Don’t worry about the cost of getting rid of your old panels, either.

European Union regulations still legally compel installers to take your panels, or at least to fund your disposal of them.

And every solar panel company in the UK is obliged to join a Producer Compliance Scheme, such as the government-approved PV CYCLE, to ensure all panels are properly recycled.

Does the house come with a solar battery?

Solar batteries can store the electricity your panels produce, meaning you won’t have to let any go to waste.

You could therefore save even more money by potentially not using any energy from the National Grid, and getting it all from your solar array instead.

Solar batteries can set you back between £2,000 and £6,000, but a house that already has one will save you that initial cost while giving you even more profit.

The average household that’s using a solar battery will save £513 per year. That’s 51% more than you’d save with just solar panels – so it’s worth asking the question.

Selling a house with solar panels: should you take them with you?

You can take solar panels with you, but you probably shouldn’t.

It’s completely viable for a company to remove and reinstall the system on your new house. Preferably, this would be your original installer, as that’ll be less likely to void your warranty.

But the process will be expensive, the panels won’t have been selected for your new home and therefore may not suit it, and if you were receiving Feed-in Tariff payments, they’ll stop.

You should think of your solar panels like a boiler – and you wouldn’t take a boiler with you when you move.

Homes with solar panels sell for more

It’s also worth considering that properties with solar panels typically sell for 4.1% more than they would otherwise, according to Zillow’s research.

The average property in the UK costs £254,624, according to government data, meaning solar panels will make the average homeowner an extra £10,400.

And that makes sense – after all, solar panels provide free energy to new owners, with none of the expensive, inconvenient setup.

It only makes sense that someone would pay a bit more for that kind of extra profit.

Solar panels also raise a house’s Energy Performance Certificate (EPC) rating, which usually increases your home’s value by at least 6%.

Again, this is logical – people know that a more energy-efficient home will save them thousands of pounds in the long term.

How to promote your solar panels to buyers

To prove to buyers how much money they’ll make and save, use documents that outline your Feed-in Tariff or SEG payments, and bills that contrast how much you paid for energy before and after you went solar.

Also make sure to show them proof that the panels were installed by a professional who was accredited by a Microgeneration Certification Scheme, and provide them with all the documentation they’ll need to show to mortgage lenders.

Outline how many more years the solar panels will be in warranty for, and if you want to go the extra mile, do some mental arithmetic to work out how much they’ll save in that time.

And lastly, assure them that the panels require a negligible amount of maintenance. If you can, show them how everything works, to fully set their mind at ease.

Broadcast these advantages as much as possible, and you can get a quicker sale at a higher price.

Next steps

When a house with solar panels is sold, the buyer and the seller both profit financially from the existence of this green source of energy.

As long as the seller is able to make this clear, the transaction should only be helped by the fact that the home’s next owner will have an easy source of free, renewable energy.

When solar’s involved, the future for both parties is very bright.

Josh Jackman Senior Writer

Josh is The Eco Experts’ main man for smart home technology, data-driven analysis, and boilers. If it can make your life better and help the environment, he’s on it.