Skip to Content

Everything you need to know about the energy certificate before buying an apartment

The energy certificate is an important piece of information when buying an apartment because it shows the energy efficiency of the property and affects future heating and cooling costs. Find out what the energy class A+ means and why it is important when choosing a new home.
September 3, 2026 by
Everything you need to know about the energy certificate before buying an apartment
Kvalitetna Gradnja, Andrea Dzelalija

When buying an apartment or house, the energy certificate is one of those documents that we easily skip while looking for the ideal property. And it should be one of the first pieces of information you check, because it directly affects how much you will pay for heating, cooling and electricity every month, years in advance.


What does an energy certificate even mean?


An energy certificate shows how energy efficient a building is, that is, how much energy it uses for heating, cooling, ventilation and hot water preparation. The scale goes from A+ (best) to G (worst), and the certificate is legally required when selling or renting a property.


The difference between the classes is not cosmetic. An apartment in a building with a lower energy class can have several times higher heating costs than an apartment of the same size in a building with a class A+.


Why are all our projects A+


At Kvalitetna Gradnja, the A+ energy class is not an exception or an additional option, it is the standard by which we build all our projects. We achieve this through:


  • Quality external insulation that prevents heat loss in winter and overheating in summer
  • Quality PVC joinery with double or triple glazing, installed as standard in a turnkey system
  • Thoughtful orientation of buildings that uses natural light and ventilation
  • Modern heating and cooling systems aligned with the energy needs of each building


What does this mean for you


When you buy an apartment in one of our projects, whether in Kaštel Lukšić, Kaštel Sućurac, Žnjan or anywhere else in Dalmatia, energy class A+ means:


  • Lower monthly heating and cooling bills, year after year
  • A more comfortable temperature in the apartment throughout the year, without extremes
  • A higher value of the property on the market, because energy efficiency is an increasingly important criterion for buyers
  • A smaller ecological footprint of your home


In other words, the A+ certificate is not just a piece of paper you get with the keys, it is a difference you will feel on every bill and in every day you spend in your home.