A holiday-home owner on Paros may see a historic grant headline and assume energy improvements depend on qualifying for it. Start instead with the house: its condition, months of use, comfort problems and actual energy costs. A privately financed upgrade can be assessed on those facts, without assuming either a subsidy or a guaranteed return.

The Exoikonomo 2025 round required qualifying main-residence use; that historic condition is not a statement about every future Greek programme. Check the application period and declared property use, as explained in our guide to Greek property energy upgrade grants. Plan a holiday-home project on private finance unless a current official call supports another route. Our energy upgrade service manages scope, contractor selection and documentation for foreign owners, in English, with the contractor invoicing the owner directly and no margin added on any cost.

As an independent engineering advisory, we recommend making priorities explicit when using private finance. Record when the house is occupied, which rooms are used and which comfort problems matter most. Obtain comparable quotations and a realistic island logistics schedule before setting the scope; early planning does not guarantee a lower contractor price.

Assess the Costs of Keeping the House as It Is

Start with bills and occupancy rather than a generic annual saving. An uninsulated roof, solar gain through windows or inefficient equipment may contribute to summer discomfort, but the main issue needs to be identified for the particular house. Compare the cost of targeted measures with the intended months of use and any necessary maintenance.

ETS2 starts operating in 2028 and covers emissions from fuels supplied for buildings through obligations on fuel suppliers. It may affect heating-oil and gas costs, but the retail effect depends on allowance prices, supplier pricing and other market factors. It does not prescribe a fixed yearly increase for an individual holiday home.

Review the energy performance certificate in Greece alongside the condition of the property. Greek sale and lease requirements have statutory exceptions, and a valid existing certificate is not necessarily reissued for each transaction. The energy rating can inform a buyer or tenant, but it does not establish a guaranteed resale premium or rental uplift.

Check Which Energy Rules Apply to the Property

The EU residential energy trajectory concerns the national building stock; it is not a universal minimum class at sale or lease for each Greek second home. Greek implementation, building classification and any applicable exceptions need to be checked before treating an upgrade as compulsory. Our guide to Greece’s minimum energy standards explains this distinction. Plan work around the property’s condition and use, rather than a forecast of future contractor shortages or a presumed individual deadline.

Before You Upgrade a Second Home

For a second or holiday home, the first decision is usually a privately financed scope matched to actual occupancy, comfort and running costs, while any programme eligibility is checked separately against current rules. Request a free preliminary energy assessment.

What a Private Upgrade Prioritizes

Assess roof and wall insulation, shading, glazing and ventilation together before choosing equipment. For a home used mainly in summer, overheating and the occupied rooms may drive priorities. Size heating and cooling for the proposed fabric condition and local climate; a heat pump’s suitability and efficiency depend on the design and distribution system. Assess PV separately against electricity demand and occupancy, and justify a battery on its own costs and expected use rather than treating it as essential.

Do not treat an old meter-based eligibility rule as a current offer. Photovoltaic generation and solar water heating are different technologies, and support for one does not establish support for the other. Our guide to heat pump and solar support in Greece explains why a programme’s current intake, equipment scope and property-use conditions must be checked separately.

Check the Building Before You Insulate It

Check moisture, roof condition, coastal corrosion and electrical capacity before specifying energy work. These cannot be established reliably from an owner’s photographs alone, and defects may change the scope or require specialist investigation. For older island stock, the principle is the same as pre-purchase technical due diligence: understand the building before spending on improvements. A buyer can use the findings to review the budget and contract position before committing.

The Rental and Resale Case

For a house that is let, compare expected comfort benefits and operating costs against actual occupancy and the intended rental model. Check the applicable EPC requirements and any exceptions separately. Better energy performance may be useful to future buyers and tenants, but additional rental weeks, a fixed hourly cooling cost and a resale premium should not be promised without property-specific evidence.

Upgrading a Holiday Home in Greece?

Before you start, we define a privately financed scope, identify programme questions for checking against official rules, and compare measures against the intended use of the second home, independently and in English, with the contractor invoicing you directly. Programme approval remains with the responsible authority. Start at kgnordic.com/contact or see the energy upgrade service.

A holiday-home upgrade should stand on a clear scope, realistic quotations and the way the house is actually used. Assess the fabric and systems together, keep funding assumptions separate, and choose the measures that the property-specific budget supports.

Frequently Asked Questions

Can a holiday home get the Greek energy upgrade grant?

The Exoikonomo 2025 round required qualifying main-residence use, so a property used only as a holiday home did not meet that condition. Future programmes have their own rules. Budget privately unless a current official call confirms a relevant route and the project receives the required approval.

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

Check the current official programme, its application window, eligible technology and declared property use. A historic scheme tied to an electricity meter does not establish a present entitlement, and support for solar water heaters is not the same as support for photovoltaic panels.

Do Greece’s minimum energy standards apply to holiday homes?

Do not assume either a blanket exemption or a universal minimum EPC class. The EU residential trajectory applies to the national building stock; obligations for a particular holiday home depend on applicable Greek implementation, building classification and exceptions.

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

ETS2 starts operating in 2028 and may affect fossil heating-fuel prices through suppliers. It does not fix the retail increase for a particular house. A heat pump reduces reliance on oil or gas for heating, but its running cost still depends on electricity prices, design and use.

What should a privately financed holiday-home upgrade prioritize?

Prioritise the problems that matter for the actual months of occupancy. Assess the fabric, shading and ventilation before final system sizing, and compare any solar proposal against electricity demand. There is no universal package or guaranteed sequence of cost savings.