Do solar panels add value to your home? Yes — about 2.7%, and there's real data behind it.

Yes, and there is credible Australian data behind it. A 2025 study by property data firm Cotality with the Commonwealth Bank found homes with solar sold at a 2.7% premium, averaging about $23,100 per home, while separate analysis drawing on RMIT research and CoreLogic transaction data consistently finds a 3 to 4% premium. On a $700,000 home that is roughly $21,000 to $28,000. Uplift varies by market, with regional Northern Territory among the highest at around 6.9%. There is also a speed effect that matters to sellers: homes with sustainable features attracted about 16.7% more buyer interest and sold roughly 4% faster. Buyer sentiment supports it too, with around 77% of Australians saying solar increases a property's value and 57% saying they would pay up to $10,000 more. Treat these as market averages rather than a guarantee for any individual property.

Usually no. Three reasons. The measured premium attaches to established systems with a track record, not to a fresh install — a buyer partly values solar for the bills it has demonstrably reduced, and a system fitted six weeks before the campaign has no bill history to show. You would also be racing the payback: solar's economics come from years of self-consumption, so installing and selling immediately captures none of that and bets the entire return on a market average rather than a guaranteed contract price. And the system you would choose to present well is not necessarily the system a buyer would have chosen for their own usage. The exception is if you are staying two or more years, in which case install for the bill savings on their own merits and treat the resale premium as a bonus collected later. If you already have solar and are selling soon, the valuable work is making the existing system present as a verified asset rather than adding more panels.

Four things, all of which can be addressed before listing. First, the system not actually working — solar fails silently and a buyer's inspection will find what you did not, turning a selling point into a negotiating lever. Second, missing paperwork: no install certificate, warranty documents, manuals or monitoring login means a buyer cannot verify what they are paying for. Third, an orphaned system where the original installer has gone out of business, which makes the workmanship warranty unenforceable and reduces what a cautious buyer will pay; you cannot undo that, but disclosing it upfront beats being told at inspection. Fourth, and the one that causes real trouble at settlement, finance still attached to the system through a loan, lease or power purchase agreement, which must be resolved or transferred and can delay or derail a settlement if left until the last minute. Note also that generous legacy feed-in tariffs are typically tied to the account holder and premises and generally do not transfer to a buyer.

Assemble it as a single folder and hand it over at settlement: the installation certificate and the electrical safety certificate, panel and inverter warranty documents, the original invoice, product manuals, monitoring platform login details, and any service or repair records. Add one document that is not strictly paperwork but is the most persuasive item you have — twelve months of electricity bills. Buyers understand dollars far better than kilowatt-hours, and a year of demonstrably low bills makes the case in a way a specification sheet cannot. It is also worth briefing your agent with specifics rather than letting the listing say only that the property has solar: system size in kW, panel and inverter brands, year of installation, whether a battery is fitted, and typical annual generation. A listing that reads “6.6 kW installed 2021, full documentation available, averaging X kWh a year” supports the premium far better than the word solar on its own.

The available Australian data suggests yes. Alongside the sale-price premium, homes with sustainable features including solar attracted around 16.7% greater buyer interest and sold roughly 4% faster than comparable homes. For a seller that is a genuine benefit which never appears in the final sale price, and in a slower market it can be worth more than the premium itself — every additional week on market carries holding costs, and a shorter campaign reduces the pressure to discount. The effect appears to be driven by the same thing that drives the price premium: buyers reading solar as lower running costs and a well-maintained property. That is also why presentation matters. A system that is verified, documented and supported by twelve months of low bills reads as an asset, while an undocumented array of unknown age and condition can raise more questions than it answers.

The Australian research that produced the clearest premium figures measured solar panels specifically rather than batteries, so there is less firm evidence on batteries alone. Buyer sentiment is encouraging — surveys have found around 60% of buyers say they would pay more for a home with both solar and a battery — but sentiment about what people would pay is weaker evidence than analysis of what they actually did pay. Treat a battery's resale contribution as plausible but unproven, and do not buy one on that basis. The sound way to assess a battery is on its own economics for your household: what it saves you on your tariff, over how many years, against what it costs. Our guide on whether a home battery is worth it works through that, and the same principle applies as with solar — if it does not stack up on savings, a hoped-for resale premium will not rescue it.