Energy Upgrading a Holiday Home in Greece (Without the Grant)

An owner of a summer house on Paros reads about up to 80 percent state support for energy upgrades, then learns the flagship grant is for primary residences only and assumes the whole subject is closed. That conclusion costs money every year the house is owned. The main grant does not apply to a holiday home, but the coming standards, the running costs and the resale market do not exempt it, and the privately financed route is smaller, sharper and still pays.

The eligibility rule is firm. The flagship Exoikonomo renovation grant supports primary residences, and a second or holiday home does not qualify, a line drawn in detail in our guide to Greek property energy upgrade grants. What remains for a holiday-home owner is a privately financed upgrade with a narrower scope, which is exactly what our energy upgrade service plans and manages for foreign owners: scope, contractor selection and documentation, in English, with the contractor invoicing the owner directly and no margin added on any cost.

The private route changes the funding, not the logic. As an independent engineering advisory we see the same pattern every season: owners who scoped the work early bought it at reasonable prices and use the house from April to November. Owners who waited are quoted more for the same scope, and pay the old running costs while they decide.

What an Unupgraded Second Home Actually Costs

The cost of doing nothing is not zero. It is three separate lines in the owner's budget. The first is energy itself. An older island house with single glazing, an uninsulated roof and a twenty-year-old air conditioner is expensive to cool in July and August and uncomfortable in the shoulder months, which quietly shortens the part of the year the house gets used. The asset is paid for twelve months and enjoyed for eight weeks.

The second line arrives in 2027. The EU's second emissions trading system, ETS2, is set to put a carbon price on the fuels burned in buildings, and heating oil, still common in older Greek houses, sits squarely inside it. The exact price path will only be known once trading starts, but the direction is fixed in EU law: burning oil in a Greek holiday home gets more expensive from 2027, not less.

The third line is value. Greece requires an energy performance certificate at every sale and at every new long-term lease, graded from A+ down to H, and the class is visible to every future buyer of the house. A poor class is negotiating material for the other side of the table, a point developed in our guide to the energy performance certificate in Greece.

The Standards Do Not Ask How Often You Are There

Minimum energy performance standards for existing buildings are moving from EU directive into Greek law, and they are not waived for second homes. The thresholds and dates are not yet fixed, so every claim about them should stay indicative, but the direction of travel is the same one covered in our guide to Greece's minimum energy standards: a poorly rated house faces growing friction at sale or lease. The timing argument follows directly. Demand for upgrade trades on the islands is still moderate and pricing is reasonable. The moment standards bite, every owner competes for the same crews at once. A holiday-home owner who scopes the work now buys it at today's prices, on their own schedule, instead of in tomorrow's queue.

Before You Upgrade a Second Home

Send the property details and how the home is used before you assume the grant rules you out of everything. Our 139 euro Eligibility Check gives an independent read in English on which support, if any, the property can access, and a privately financed scope where it cannot, credited in full if you proceed. Submit the details here: kgnordic.com/contact

What a Private Upgrade Prioritizes

Without a grant absorbing most of the cost, the private scope is value-led and shorter than the grant-funded one. The building fabric comes first: insulation on the roof and, where feasible, the walls, and glazing that keeps summer heat out as much as winter warmth in. In the Greek climate the cooling benefit of insulation is worth as much as the heating benefit. Then the system: a modern heat pump that both heats and cools, delivering roughly three to four units of heating or cooling for every unit of electricity it draws, in place of resistive heaters and an aging oil boiler. Then the roof: rooftop solar, ideally with battery storage, so the heat pump runs on Greek sunlight rather than grid power.

Privately financed does not mean unsupported across the board. The rooftop solar with battery program has in some cycles been tied to the electricity meter rather than to primary-residence status, which can reach holiday homes. That route must be verified cycle by cycle and is covered in our guide to heat pump and rooftop solar subsidies.

Check the Building Before You Insulate It

An energy scope drawn on a building nobody has verified is a budget waiting to move. Moisture trapped in old stone walls, chloride corrosion in coastal concrete and undersized electrical installations all change what the right scope is, and they are invisible in the photographs an owner sends from abroad. For older island stock, a condition review before the energy design applies the same discipline as pre-purchase technical due diligence: verify the structure and the installations first, then spend on efficiency. Buyers acquiring a holiday home now can fold both into one pre-purchase assessment and negotiate the findings before signing.

The Rental and Resale Case

For owners who let the house, the upgrade works twice. A certificate is required at every new long-term lease, comfort across a longer season widens the rental window, and cooling that costs cents per hour instead of euros changes the operating margin on every booking. At exit, the energy class is one of the few line items a foreign buyer can read without a translator. Two otherwise identical island houses with two different energy classes are no longer identical, and the market increasingly prices that difference.

Upgrading a Holiday Home in Greece?

Before you start, we define a privately financed scope, confirm any scheme the property can still access, and prioritize the measures with the best return for a second home, independently and in English, with the contractor invoicing you directly. Start at kgnordic.com/contact or see the energy upgrade service.

A holiday home sits outside the main grant but inside everything else: the standards, the carbon price on heating fuel, the running costs and the resale market. Treating the missing grant as a reason to do nothing is the expensive choice. A focused, self-funded upgrade, fabric first, then system, then solar, is the one that pays.

Frequently Asked Questions

Q - Can a holiday home get the Greek energy upgrade grant?

No. The flagship Exoikonomo renovation grant is for primary residences only, so a second or holiday home does not qualify. The upgrade is done on a privately financed basis instead, with a narrower, value-led scope.

Q - Is any state support available for a second home in Greece?

Possibly. The rooftop solar with battery storage program has in some cycles been tied to the electricity meter rather than to primary-residence status, which can reach holiday homes. Eligibility must be verified against the current cycle before it is counted on.

Q - Do Greece's minimum energy standards apply to holiday homes?

Yes, as currently drafted the standards apply to existing buildings without a primary-residence exemption. Thresholds and dates are not yet fixed in Greek law, but a poorly rated second home faces the same direction of travel at sale or lease as any other property.

Q - Will ETS2 make a Greek holiday home more expensive to run?

If the house heats with oil or gas, yes. From 2027 the EU's second emissions trading system is set to put a carbon price on fuels burned in buildings. A house that has switched to a heat pump running partly on rooftop solar is largely outside that exposure.

Q - What should a privately financed holiday-home upgrade prioritize?

Fabric first, then system, then solar: insulation and glazing to cut the load, a heat pump that both heats and cools, and rooftop solar to run it cheaply. Done in that order, each measure makes the next one smaller and cheaper.