Selling your Perth home with solar: what buyers expect and what to disclose

Solar panels installed on a Perth home add value — industry data and real estate anecdotes consistently suggest buyers perceive solar positively, particularly as energy costs rise. But a solar system also comes with transfer obligations, warranty questions, and finance considerations that both sellers and buyers should understand before settlement.

Are solar panels a fixture?

In most cases, yes. Solar panels, inverters, and permanently wall-mounted batteries are considered fixtures under Australian property law — they're attached to the property and transfer with the sale. They appear in the contract of sale as part of the property.

A portable solar system (e.g., a standalone generator with solar) or a portable battery (not wall-mounted) might be treated differently — as chattel, removable by the seller. If there's any ambiguity, specify explicitly in the contract what solar equipment is included in the sale.

What transfers with the solar system

Equipment warranties: Panel and inverter warranties are manufacturer warranties tied to the equipment, not the person. They transfer automatically to new owners. The key documents to hand over:

• Panel warranty certificate (typically 10–25-year product warranty + 25-year performance warranty)
• Inverter warranty certificate (typically 5–12 years from installation date)
• CEC installer workmanship warranty (typically 5 years)
• Any extended warranty purchased at installation

DEBS (Distributed Energy Buyback Scheme) registration: DEBS is registered to the meter point (NMI), not to the account holder personally. When the new owner sets up their Synergy account for the property, they automatically inherit the DEBS registration. No separate DEBS transfer process is required — it follows the meter.

Peak and off-peak DEBS rates: The DEBS rates (10c peak / 2c off-peak from 1 July 2026) apply to the meter point. New owners receive the same rate structure immediately upon establishing their Synergy account.

Inverter monitoring access: You'll need to transfer the monitoring app account (Fronius SolarWeb, Enphase Enlighten, Sungrow iSolarCloud, etc.) to the new owner. This usually involves creating a new account for them or transferring site ownership within the app. Without monitoring access, the new owner can't check system performance. Include this handover as part of settlement preparation.

What to disclose when selling

Transparency about the solar system's condition, specifications, and any obligations reduces post-sale disputes. Key disclosures:

System specification: Provide the system datasheet or installation paperwork showing: panel brand/model/count, inverter brand/model, system size (kW), and installation date.

Generation data: If you have inverter app access, export the last 12 months of generation data and provide it to the buyer. This lets them benchmark future performance. If the system has been underperforming (a known inverter fault, persistent shading issue), disclose it.

Outstanding warranty claims: If there's an open warranty claim (a panel replacement pending, an inverter under RMA), disclose this and indicate how it will be resolved — typically the seller resolves it before settlement, or the buyer receives a credit.

Solar loan or lease: See below. Any finance tied to the system is a material fact and must be disclosed.

Solar finance: check before listing

If your solar system was installed under any of these arrangements, you must resolve or transfer them before or at settlement:

Solar loan: A personal or green loan used to purchase the system is a personal debt — it doesn't automatically transfer to the buyer. It should be paid out from sale proceeds. If the loan is secured against the property (unusual for residential solar), it will appear in the title search and must be discharged.

Solar lease or Power Purchase Agreement (PPA): Some older Perth installations used a lease or PPA structure, where a third party owns the panels on your roof and you pay for the electricity they generate. This is less common now but still exists. If your system is under a lease or PPA:

• The lease company must be contacted
• The buyer must be informed (it's a material fact — they're essentially buying a reduced-rate electricity contract, not a system they own)
• The lease company may have a "change of ownership" process
• Alternatively, you can pay out the lease and sell the system with it fully owned

Rebate clawback: Check your STC (Small Technology Certificate) rebate paperwork. In most cases, STCs are claimed at installation and there's no clawback on sale. But if you're in any other rebate arrangement (some specific grant programs have occupancy conditions), verify whether the sale triggers any obligation.

Solar's impact on property value

Perth real estate agents generally report that solar is viewed positively by buyers, particularly for systems in good condition with remaining warranty. However, value attribution varies:

• A new, well-specified 6.6kW system with a modern inverter and remaining 20-year panel warranty is a clear positive for buyers factoring in energy costs
• An old, small (1.5–3kW) system with an end-of-life inverter and expired warranties may generate less buyer enthusiasm — or may trigger questions about replacement cost

Getting the system checked by a solar service provider before listing (inspection report, inverter output confirmed) gives you documentation and addresses buyer concerns proactively. Cost: $150–$300.

Advice for buyers of homes with solar

When buying a Perth home with solar:

1. Ask for the full system specification — panel brand/model, inverter brand/model, installation date
2. Check the remaining warranty — if the inverter is 9 years old and has a 10-year warranty, plan for replacement cost within a year or two
3. Verify generation history — ask for 12 months of inverter app data or Synergy export data
4. Confirm DEBS is registered — check your first Synergy bill post-settlement shows export credits
5. Transfer monitoring app access — request this as part of settlement conditions
6. Ask about finance — confirm the system is owned outright or understand any lease/PPA structure
7. Check for visible damage — panels visible from ground level for any cracks, discolouration, or mount issues

A solar system you can't verify, with no documentation, is a system you should be cautious about — or factor in an inspection cost before exchanging contracts.

Legal and financial considerations for property sales vary and may depend on individual contract terms and state regulations. Consult a licensed conveyancer or real estate agent for advice specific to your sale. Warranty transfer terms vary by manufacturer — check the specific warranty documents for your system.