One of the questions we get asked most often by people thinking about solar is a version of this: “What if we move?” It’s a fair worry. Nobody wants to spend money on something that turns into a headache the day they put the house on the market.
The short answer is that solar panels very rarely stop a house sale. What does cause problems is missing paperwork, or a system that was installed by someone who isn’t around any more. Here’s an honest run-through of what happens when you move, whether you’re selling a home with solar or buying one.
The panels stay with the house
If you own your system outright, the panels, inverter and any battery are treated as a fixture of the property, like a boiler or a fitted kitchen. They’re included in the sale and their value is wrapped up in the price of the house. You can’t realistically take them with you — removing an array means scaffolding, roof work, a new set of fixings on the next property and a fresh set of certificates. It almost never makes financial sense.
So the sensible way to think about a solar system is as an improvement to the building rather than a possession you own. Whether that improvement lifts your sale price is a separate question, and we’ve written about that honestly in our guide on whether solar panels add value to your home.
The paperwork your conveyancer will ask for
This is where sales get held up. Solicitors acting for the buyer — and increasingly the buyer’s mortgage lender — will want to see documentation proving the system was installed properly and legally. Expect to be asked for:
- The MCS certificate. This proves the installation was carried out by an MCS-certified installer to the scheme’s standards. It doesn’t expire, and it’s the single most important document in the pack.
- Electrical certification. An electrical installation certificate for the work, and confirmation that the work was notified under Building Regulations where required.
- DNO paperwork. Evidence that your network operator was notified of, or approved, the connection.
- Warranty documents. Panel, inverter and battery manufacturer warranties, plus your installer’s workmanship guarantee and any insurance-backed guarantee.
- Smart Export Guarantee details. Which supplier you’re with and the export meter arrangements.
- Structural sign-off. Where a structural assessment was carried out, particularly on older roofs or commercial buildings.
If you’re selling and you can’t find any of this, don’t panic and don’t leave it until you’re mid-chain. Ask your original installer for copies first. If they’re MCS-certified and still trading, they can normally reissue what you need. Getting this together before you list is the single easiest thing you can do to keep a sale moving.
Leased roofs and “rent-a-roof” schemes are the real complication
Between roughly 2010 and 2016, a lot of households took free panels under rent-a-roof arrangements. A third party paid for and owned the system, claimed the Feed-in Tariff income, and took a 20 to 25 year lease on the roof space in return.
These are the cases that genuinely do slow sales down. The lease sits on the title, and mortgage lenders have criteria the lease has to meet. Where it doesn’t, a deed of variation may be needed before contracts can exchange, and that takes time. If you have one of these arrangements, tell your conveyancer at the very start rather than when the buyer’s solicitor raises it.
A modern, owned system installed by an MCS-certified company does not have this problem. There is no lease, nothing registered against your title, and nothing for a lender to object to.
What happens to your export payments
Your Smart Export Guarantee contract is between you and your energy supplier, not something attached to the bricks. It doesn’t automatically follow the house.
When you sell, notify your SEG supplier and close your account with a final meter reading, or you’ll keep getting statements for a system you no longer have. The buyer then either takes over the existing tariff — which needs to be agreed as part of the sale — or, more commonly, signs up to a new SEG tariff in their own name. Payments aren’t backdated, so a buyer who leaves it six months has simply lost six months of export income. It’s worth flagging to them at handover. If you’re new to how this works, our guide to the Smart Export Guarantee explains it in plain English.
Do the warranties transfer?
Mostly, yes — but check rather than assume. Manufacturer product and performance warranties on panels, inverters and batteries are generally tied to the installation itself, so they carry on at that address for the new owner.
Installer workmanship guarantees and insurance-backed guarantees vary. Some transfer automatically to a new owner, some need a written transfer, and some are limited to the original customer. The terms are in the guarantee document, and the provider will confirm. If you’re buying, this is a question worth asking before exchange — it’s much harder to sort out afterwards.
If you’re buying a home that already has solar
Ask for the whole document pack listed above, and ask three practical questions: who installed it, is that company still trading, and has it been serviced or inspected since. Ask for a few months of generation figures from the monitoring app if there is one. And tell your buildings insurer the system is there once you move in — most treat it as a standard fixture, but they need to know about it.
If the paperwork is thin, that’s not automatically a reason to walk away, but it does mean you should budget for an independent inspection. A system that’s been sitting unmonitored for years with a faulty inverter is a common enough find.
Getting it right from the start
Almost every problem in this article traces back to the same root cause: a system installed by a company that cut corners, or one that has since disappeared. That’s why the installer matters more than the panel brand, something we cover in our guide on how to choose a solar installer.
At DES we’re MCS-certified, our installations are carried out by our own employed teams rather than subcontractors, and every customer gets a full document pack at handover — MCS certificate, electrical certification, DNO notification and warranties. Keep it somewhere safe and your future conveyancer will have nothing to chase.
Talk to a local installer
If you’re weighing up solar and the “what if we move” question is what’s holding you back, we’re happy to talk it through with no pressure either way. You can also try our free suitability checker to see whether your roof is a good candidate in the first place.
DES Renewable Energy is based in Wimborne and covers Dorset, Hampshire, Wiltshire and the surrounding counties. Get a free, no-obligation quote from a local, MCS-certified team.