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Sustainability and Sales: Is your home efficient for the 2026 market?

Just a few years ago, the energy efficiency certificate was perceived by many owners as a mere administrative procedure, just another piece of paper to hand over at the notary's office on the day of the signing. However, in 2026, the reality of the real estate market in the Costa Brava has taken a radical turn: sustainability has become one of the determining factors of the final sale price.

Today, the buyer no longer just falls in love with the views of the Mediterranean or the proximity to the coves of Begur or Palamós; now, their second question (after the price) is usually about thermal insulation and the monthly maintenance cost.

The New Standard for the International Buyer

The client profile we manage at Immogrupstar —mainly Central Europeans, French, and high-net-worth local residents— arrives with a very conscious mindset. These buyers are looking for "total comfort": a house that stays cool in the increasingly long summers and warm in winter without relying exclusively on expensive and noisy air conditioning systems.

A property with an A or B energy rating not only positions itself better on real estate portals but also allows for a significantly higher starting price, reducing the margin for downward negotiation.

Why update your property before putting it up for sale?

If your property in the Costa Brava was built a couple of decades ago, making strategic small improvements before launching it on the market can be the most profitable investment you make this year:

• Enclosure insulation: Replacing old aluminum windows with thermal break frames and high-efficiency glass is, possibly, the improvement that the buyer perceives as the most value instantly.
• Renewable Energy and Self-consumption: In an area with as many hours of sunshine as ours, the installation of solar panels or aerothermal systems is an absolute magnet. The buyer understands that they are acquiring "energy independence."
• Smart home automation systems: Controlling the temperature or the awnings from a mobile phone is not just a luxury; it is a saving tool that fascinates the technological client of 2026.

Real Revaluation: The Price Gap

In 2026, the price difference between an efficient house and one that is not has widened considerably. "Green" properties suffer much less haggling. Today's buyer is analytical and prefers to pay a bit more upfront if they know they will save thousands of euros in bills and future renovations mandatory by European regulations.

In addition, there are currently subsidies and tax benefits in Catalonia for energy renovation that can make this update much cheaper than you imagine.

We prepare your property for the buyer of the future

At Immogrupstar, we do not limit ourselves to processing documents; we help you understand the hidden potential of your home. We analyze what weak points your house has at an energy level and advise you on what minimum improvements will trigger the interest of the most exclusive buyers in our international portfolio.

Selling in 2026 requires a modern and responsible vision. Do not let a bad energy label depreciate your assets.

Do you want to know what rating your house has and how to improve its market value before selling? Contact our expert team and we will give you a clear roadmap so that your sale is a resounding success.

Phone: +34 972 81 98 94