Is Co. Offaly a high radon county?

4 of the 12 town centres we sampled in Co. Offaly are in an EPA High Radon Area (1 in 5 homes or more predicted above 200 Bq/m³). Nationally it is 36% of towns. High towns include Tullamore, Birr, Portarlington, Kilcormac.

What does a High Radon Area mean for a buyer?

Houses built after 1998 in a High Radon Area must have a radon barrier. Older houses usually have none, and one in five will test above the reference level. It costs €50 to €60 to test after you move in and €1,500 to €3,000 to fix. Ask the seller for any test result.

Why does radon vary so much within a county?

Radon comes from uranium in the underlying rock. Granite and some limestones give high readings; the map follows the geology, so it changes over a few kilometres. The exact Eircode grid square is what matters.

Radon · Co. Offaly

Radon in Co. Offaly: 4 of 12 towns in a High Radon Area

The EPA map predicts the share of homes above the radon reference level for each grid square. Read at the centre of 12 towns in Co. Offaly, 4 fall in a High Radon Area (1 in 5 homes or more).

4/12

town centres in an EPA High Radon Area (1 in 5 or more)

in a moderate band (about 1 in 10)

36%

of Irish towns sampled are in a High Radon Area

Radon across Co. Offaly

The EPA map predicts, for each grid square, the share of homes above 200 Bq/m³. We read it at the centre of every town in Co. Offaly with at least 100 registered sales. 33% of those centres fall in a High Radon Area. Towns by predicted odds, highest first:

Tullamore	1 in 5
Birr	1 in 5
Portarlington	1 in 5
Kilcormac	1 in 5
Edenderry	1 in 10
Clara	1 in 10
Banagher	1 in 10
Ferbane	1 in 10
Daingean	1 in 10
Rhode	1 in 10
Geashill	1 in 10
Cloghan	1 in 10

Check one house in Co. Offaly

The area tells you the odds. The report tells you about the house.

Enter the Eircode. The free snapshot shows which of the twenty-nine checks flag up. The full report (€24.99, one house, no account) reads the EPA prediction for the exact Eircode square, checks the build year against the 1998 barrier rule, and puts radon beside the other twenty-eight checks.

Or read the sample report first: a real house, 16 pages.

Other checks for Co. Offaly

Co. Offaly is in the pyrite belt. Houses built roughly 1997 to 2013 with hardcore from the affected quarries may have heave in floors; the Pyrite Resolution Board ran the remediation scheme. The report flags the build years and the scheme for the exact house.

Radon by town in Co. Offaly

Questions people ask

Is Co. Offaly a high radon county?: 4 of the 12 town centres we sampled in Co. Offaly are in an EPA High Radon Area (1 in 5 homes or more predicted above 200 Bq/m³). Nationally it is 36% of towns. High towns include Tullamore, Birr, Portarlington, Kilcormac.
What does a High Radon Area mean for a buyer?: Houses built after 1998 in a High Radon Area must have a radon barrier. Older houses usually have none, and one in five will test above the reference level. It costs €50 to €60 to test after you move in and €1,500 to €3,000 to fix. Ask the seller for any test result.
Why does radon vary so much within a county?: Radon comes from uranium in the underlying rock. Granite and some limestones give high readings; the map follows the geology, so it changes over a few kilometres. The exact Eircode grid square is what matters.

Sources

Area figures, compiled from public records. They describe the town or county, not any one house. The paid report checks the exact Eircode.