There is a premium of close to €100,000 for a home with a high energy rating compared with one which is less efficient to heat.
The average sale price for all types of homes was €390,000 in the last three months of last year.
This was up €20,000 on the same period in 2024, according to the data obtained from the State’s property price register by Dublin-based data and home valuation company Geowox.
Prices of a typical home were up 5.4pc at the end of last year compared with a year earlier.
Homebuyers are having to shell out close to a third more for an energy-efficient home than one that is not efficient.
The median, or typical, sale price last year for a home with a Building Energy Rating (BER) of between A and B was €450,000, a €95,000 premium on the sales price for homes with BER rating of C to G.
Homes with higher Building Energy Ratings selling for around €95,000 more than lower-rated homes. Photo: PA
News in 90 seconds Saturday January 24
Homes with lower ratings typically sold for €355,000 last year, Geowox said. This is a 27pc difference.
This energy-based comparison excludes new homes to gain a more precise understanding of the energy-efficiency premium, the data experts said.
New homes now cost €440,000 on average, up 5pc on the same quarter in 2024.
New homes sold for an €85,000 premium over the median for existing homes. This makes new homes nearly 24pc more expensive than existing homes.
Purchasing prices for apartments were up by 5pc in the year, to €336,000.
A total of 16,186 homes were sold in the fourth quarter of last year. This is a fall of 8pc on the same period in 2024.
Energy-efficient and new homes continue to command hefty premiums
Out of the top 25 urban centres, Dublin city was the most expensive at a median price of €570,000. Longford was the most affordable at €222,000.
In Dublin city, prices in Eircode D6, which includes affluent areas such as Rathmines, Ranelagh, Dartry and parts of Terenure, had the highest prices at €850,000.
Dublin 10, which includes Ballyfermot and Cherry Orchard, had the lowest prices in Dublin with a typical price of €328,000.
In the last three months of last year there were a total of 4,205 new home sales filed on the State’s Residential Property Price Register. This was down 2.8pc over the year.
Geowox’s head of data Marco Giardina said: “Median prices are steadily rising, while energy-efficient and new homes continue to command hefty premiums.”
Prices on the property register are a lagging indicator as the sales will have been completed months before the details were logged on the register.
Recent figures from MyHome.ie show that asking prices, a more up-to-date indicator, are showing signs of weakening.
And the latest figures from the Central Statistics Office (CSO) show that property prices continue to rise but the rate of increase has slowed down.
The cooling in the market has been put down to some potential buyers reaching a point where they can no longer afford to buy, due to the increases in house prices up to now, and a slight easing in the jobs market.
The CSO said prices increased by 6.6pc in the 12 months to last November. That was down from the 7.2pc recorded in the year to last October.