Dublin BER Statistics 2026: Ratings by Postcode, Property Age and Heating

Last updated: August 2026. Human written and fact checked against each named source.

Dublin has 409,508 dwellings with a Building Energy Rating, more than any other region in Ireland, and the gap between its best and worst postcodes is wider than the gap between most counties. This page gathers the current BER figures for Dublin in one place: the A rated and worst rated share for every Dublin postal district, average property age, heating fuels, heat pumps, solar and what a better rating is worth at sale. Every figure links to the CSO, SEAI or Census release it came from. For the national picture, see our home insulation statistics for Ireland.

Key Dublin BER Statistics at a Glance

• 409,508 dwellings in the Dublin region hold a BER, comprising 305,987 in the Dublin 1 to 24 postal districts and 103,521 in the rest of Dublin County. Source: CSO, Domestic Building Energy Ratings Q1 2026
• Dublin 18 is the city’s best performing postcode with 44% of rated homes A rated; Dublin 13 (31%) and Dublin 20 (27%) follow. Source: CSO, Q1 2026, Table 5
• Dublin 6 and Dublin 7 each have 12% of rated homes in the G band, the highest shares in the capital. Source: CSO, Q1 2026, Table 5
• 34% of rated homes in Dublin 1 to 24 are rated D1 or worse (calculated from the ratings breakdown). Source: CSO, Q1 2026
• The average rated home in Dublin 6 is 65 years old and in Dublin 7 is 61 years old, against 38 years across Dublin 1 to 24 and 28 in the rest of Dublin County. Source: CSO, Q1 2026, Table 5
• 61% of rated homes in the Dublin postal districts heat with mains gas, against 34% nationally. Source: CSO, Q1 2026, Table 8
• 60.0% of Dublin City Council households live in homes built before 1981 (calculated from Census 2022). Source: CSO Census 2022, table FY033A
• Heat pumps are present in 24% of rated homes in Dublin 18 and 23% in Dublin 22, but only 5% in Dublin 3. Source: CSO, Q1 2026, Table 14
• Solar energy is present in 22% of rated homes in Dublin 16 and 20% in Dublin 15, but 3% in Dublin 1 and Dublin 8. Source: CSO, Q1 2026, Table 13
• Each step up the BER scale is associated with a 1.7% higher sale price in urban Dublin, against 2.7% nationally. Source: SEAI and MyHome, August 2026

How Many Dublin Homes Have a BER

The CSO’s quarterly Domestic Building Energy Ratings release breaks the register down by Dublin postal district as well as by county. By Q1 2026, 409,508 unique dwellings in the Dublin region held a BER: 305,987 across Dublin 1 to 24 and 103,521 in the rest of Dublin County, per the CSO Q1 2026 release. That is 30.3% of the 1,350,427 rated dwellings in the State (calculated).

The two halves of Dublin perform very differently. In the postal districts, 20% of rated homes are A rated and the average rated home is 38 years old. In the rest of Dublin County, 28% are A rated and the average home is 28 years old. Rated homes in Dublin 1 to 24 break down as 20% A, 16% B, 29% C, 17% D, 9% E, 4% F and 4% G, so 34% are D1 or worse (both shares calculated from CSO Table 5).

BER Ratings for Every Dublin Postcode

The table below is compiled from Table 5 of the CSO Q1 2026 release. The A rated, G rated and average age columns are as published; the D1 or worse column is calculated by summing the D1 to G bands for each district.

The Best and Worst Performing Postcodes

Dublin 18 leads the capital with 44% of rated homes A rated and only 11% D1 or worse (calculated), a direct result of having the youngest stock in the city at an average of 15 years. Dublin 13 (31% A rated), Dublin 22 (30%) and Dublin 20 (27%) come next, per the CSO Q1 2026 release.

At the other end, Dublin 7 has 56% of rated homes D1 or worse and Dublin 6 has 54% (both calculated), and each has 12% of homes in the G band. These are also the two oldest districts, with average rated home ages of 61 and 65 years. Dublin 5 stands out as a special case: only 9% of its homes are A rated and 47% are D1 or worse (calculated), yet its stock averages 47 years old, which makes it a large concentration of 1950s to 1970s homes that have not yet been upgraded.

Dublin Against the Rest of Ireland

The rest of Dublin County (28% A rated) sits just behind Kildare, the best county in the State at 30%, with Meath also at 28% and Wicklow at 25%. The Dublin postal districts at 20% are closer to the national average of 18%. The weakest counties are Leitrim and Cork City, both at 6% A rated, per the CSO Q1 2026 county table. The pattern is the same one visible inside Dublin: wherever the housing stock is newest, the ratings are highest. Average rated home age is 23 years in Kildare, 24 in Meath and 28 in Dublin County, against 34 for the State.

How Old Dublin’s Housing Stock Is

Census 2022 counted 518,490 households in permanent housing units across the four Dublin local authorities, and 248,499 of them, 47.9%, live in homes built before 1981 (calculated from the CSO Census 2022 table FY033A). In the Dublin City Council area the pre-1981 share is 60.0%, or 135,279 of 225,519 households (calculated from the same table). Homes built before 1981 predate any meaningful insulation requirement in Irish building regulations, and the SEAI grant cut-off of 31 December 2010 means almost all of them qualify for insulation grants.

The age effect on ratings is stark in the CSO data: 31% of rated Irish homes built between 1900 and 1929 are G rated, while A ratings go to 99% of homes built in 2020 to 2024. Dublin’s Victorian and Edwardian cores in Dublin 3, 6, 7 and 8 carry exactly this penalty, which is why they fill the bottom of the postcode table above.

How Dublin Homes Are Heated

Mains gas dominates Dublin like nowhere else in Ireland. It is the main space heating fuel in 61% of rated homes in Dublin 1 to 24 and 62% in the rest of Dublin County, against 34% nationally, per the CSO Q1 2026 release. Electricity heats 28% of rated homes in the postal districts, heating oil just 5%, and 6% are on group or district heating, the highest share in the State. Nationally, only 8% of mains gas heated homes achieve an A rating, against 53% of homes heated mainly by electricity, which is why Dublin’s gas dependence matters for its retrofit outlook.

Heat Pumps and Solar by Postcode

Heat pumps are present in 15% of rated dwellings nationally, and Dublin’s spread again follows the age of the stock. Dublin 18 leads at 24%, with Dublin 22 at 23%, Dublin 20 at 21% and Dublin 24 at 20%. The old inner suburbs trail: Dublin 3 at 5%, and Dublin 5, 6 and 6W at 6% each, per CSO Q1 2026 Table 14. Across all rated homes built in 2020 to 2024, 84% have a heat pump.

Solar installations show the same geography. Dublin 16 leads the postal districts with solar present in 22% of rated homes, followed by Dublin 15 at 20% and Dublin 13 and Dublin 14 at 18% each. Dublin 1 and Dublin 8 sit at 3%, reflecting apartment-heavy stock: nationally, solar is present in 25% of rated detached houses but 4% of apartments, per CSO Q1 2026 Table 13. In the commuter belt, Meath (24%), Kildare (22%) and Dublin County (20%) have the highest overall solar shares in the State.

What a Better BER Is Worth in Dublin

SEAI analysis of almost 50,000 sales through MyHome in 2023 and 2024 found each step up the 15 point BER scale is associated with a 1.7% higher final sale price in urban Dublin, against 2.7% nationally and 4.7% in rural areas, per the SEAI release of 17 August 2026. The SEAI attributes the lower Dublin uplift to the stronger pull of location and space in the capital, but notes the relationship holds across all market segments. On a typical Dublin sale price, 1.7% per band across several bands is still a five figure sum, and lenders’ green mortgage rates for homes rated B or better apply in Dublin as everywhere else.

Among rated dwellings nationally that have been assessed more than once, 220,096 improved by at least one full letter grade, and 51% of those moved from C or below to an A or B, per the CSO Q1 2026 release. Current SEAI grant values for the insulation measures that drive those jumps are listed in our home insulation statistics for Ireland.

What a D Rating Means for a Dublin Home

The postcode table above puts a third of rated Dublin homes at D1 or worse, and the physics behind that band is well documented. SEAI guidance states that a home can lose up to 30% of its heat through poorly insulated roofs and walls, about 10% through windows and doors, and up to 10% through uninsulated floors, and that well insulated walls and attic space can save a household up to €600 a year on heating bills, per the SEAI insulation guide. For the pre-1981 stock that dominates Dublin City, the standard sequence is attic insulation first as the most cost effective measure, then walls: pumped cavity insulation where a cavity exists, or external or internal insulation for the solid walled stock that fills Dublin 3, 6, 7 and 8. The same guidance recommends 300mm of ceiling level attic insulation and sets a U-value of 1.4 W/m²K or lower as the grant threshold for replacement windows.