BER ratings · Co. Mayo
BER ratings in Co. Mayo: typical C2, 18% rated E to G
18,857 current BER certificates on the SEAI register belong to Co. Mayo routing keys. The middle rating is C2; 18% are E, F or G.
Figures compiled from the public records listed at the foot of this page. Data snapshot: . Updated when the records change.
Check one house in Co. Mayo
Typical BER C2 in Co. Mayo, 18% of 18,857 certificates rated E to G.
One specific house in Co. Mayo: BER certificate and advisory report for that Eircode, flood zone, radon, planning applications within 300 m, sale history. Thirty-eight checks in all, each linked to the public record.
€19.99, free snapshot first. No account.
Or read the sample report first: a real house, 16 pages.
C2
middle BER of 18,857 current certificates for Co. Mayo Eircodes
18%
rated E, F or G (Ireland: 12%)
38%
rated A or B (Ireland: 50%)
A 19% · B 19% · C 29% · D 15% · E 7% · F 4% · G 7%
Energy ratings across Co. Mayo
18,857 current certificates on the SEAI register belong to Co. Mayo routing keys, 13,296 of them issued since 2023. Average energy use is about 213 kWh/m² a year. Older and colder than the national stock.
Towns by share of E, F and G certificates, coldest first:
| Ballina | 20% E to G, middle C2 |
| Claremorris | 20% E to G, middle C1 |
| Westport | 13% E to G, middle C1 |
| Castlebar | 9% E to G, middle C1 |
Other checks for Co. Mayo
- Flood risk in Co. Mayo: 55 recorded events around 16 towns
- Radon in Co. Mayo: 17 of 22 towns in a High Radon Area
- Planning applications in Co. Mayo: 677 lodged in three years
- Knotweed in Co. Mayo: 96 records
Co. Mayo is in the Defective Concrete Blocks grant scheme (mica and pyrite in blocks), and the whole county is covered. For a house here, the report flags the scheme and tells you what to ask the seller about block testing.
Other checks for Co. Mayo
- Flood risk in Co. Mayo55 events
- Radon in Co. Mayo17/22 towns high
- Japanese knotweed in Co. Mayo89 records
- Planning applications in Co. Mayo677 applications
BER ratings by town in Co. Mayo
Other counties
GuideHow to check the BER of a house in Ireland (SEAI register)
Questions people ask
- What is the typical BER in Co. Mayo?
- Across 18,857 current certificates for Co. Mayo Eircodes, the middle rating is C2. 38% are A or B, 18% E, F or G. Nationally: 50% A/B and 12% E/F/G.
- Does a bad BER lower the price?
- Yes, and increasingly so: green mortgage rates are tied to the BER (each lender sets its own band; AIB asks for A0, A or B on a certificate dated after 24 May 2026), and buyers now price the retrofit in. On the other side, a D or E house with a good advisory report is a negotiating tool: the seller cannot dispute what their own assessor wrote.
- How were these figures compiled?
- From certificates published on the SEAI National BER Register, grouped by the Eircode routing key (the first three characters), with each routing key assigned to the county where most of its sales fall. Withdrawn certificates are excluded.
Sources
Area figures, compiled from public records. They describe the town or county, not any one house. The paid report checks the exact Eircode.