Is Dalkey in a flood zone?

The OPW has not published modelled flood extents within 1.5 km of the centre of Dalkey. That is not the same as no risk: 5 past floods are on record nearby. Check the exact house, not the town.

Will a house in Dalkey be hard to insure against flooding?

Insurers price by postcode and by the OPW record. With 5 recorded events within 2 km, expect questions on the proposal form and possibly a flood exclusion on some streets. Ask the seller for their current policy schedule: if flood is excluded, you will inherit that problem.

What does the paid report add for a house in Dalkey, Dublin?

It puts the Eircode point against every OPW flood extent, lists recorded floods within 500 m with dates and OPW notes, checks GSI groundwater flood maps and coastal erosion, and ranks the result against the other thirty-seven checks (radon, BER, planning, knotweed, title, sewer and more) for that one address.

Flood risk · Dalkey, Dublin

Flooding in Dalkey: 5 recorded floods (OPW record)

The OPW register holds 5 recorded floods within 2 km of the centre of Dalkey. What that means for a house here, and how to check the exact address.

Figures compiled from the public records listed at the foot of this page. Data snapshot: 2 October 2026. Updated when the records change.

Check one house in Dalkey

5 recorded floods within 2 km of Dalkey, no OPW flood zone mapped nearby.

One specific house in Dalkey: flood zone for that Eircode, recorded floods within 500 m, radon, planning applications within 300 m, BER, 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.

recorded flood events within 2 km of the town centre (OPW)

river flood extent mapped nearby (1 in 100 year, OPW CFRAM)

coastal flood extent mapped nearby (1 in 200 year)

What the OPW record says about Dalkey

The Office of Public Works keeps a register of past floods. Within 2 km of the centre of Dalkey it holds 5 events, the latest in 2018. By source: coastal/estuarine waters (3), runoff (1). A recorded event does not mean every street went under. It means an insurer’s model knows the town.

Most recent on file:

March 2018: Flooding at Bullock Harbour, Dalkey on 18th March 2018 (coastal/estuarine waters). Wave overtopping at Bullock Harbour during Storm Emma. Two residential and two commercial properties flooded. Six other residential properties and one other commercial property at risk.
March 2018: Flooding at Gasthule on 02/03/2018 (coastal/estuarine waters). Strong Northeast winds, high tide and heavy snow resulted in flooding along Newtownsmith and the Link Road. Three residential properties were flooded.
March 2018: Flooding at Bullock Harbour, Dalkey on 2nd March 2018 (coastal/estuarine waters). Wave overtopping at Bullock Harbour during Storm Emma. Two residential and two commercial properties flooded. Six other residential properties and one other commercial property nearly flooded.
undated: Pluvial Glasthule 16th Aug 2008 and 2nd July 2009.
undated: Glasthule Recurring (runoff).

What to do before bidding on a house here

Look the exact address up on the OPW map, not the town. Two houses on the same road can sit on opposite sides of an extent line. Ask the seller in writing whether the house or garden has ever flooded and whether a flood claim was made. Ask for the current insurance schedule. If the house is inside an extent, get a quote before going sale agreed: some insurers decline outright, and the bank will not lend without cover.

The report on this site checks flood for one Eircode in about a minute. The paid report adds the distance to each recorded event, which extents the point falls in, and the GSI groundwater map, all with links to the source so a solicitor can rely on them.

Also for Dalkey

Radon in Dalkey · Planning applications in Dalkey · BER ratings in Dalkey · Flood risk across Dublin

Nearby: Glenageary, Killiney, Dun Laoghaire, Cabinteely, Monkstown, Foxrock.

Other checks for Dalkey

Radon in Dalkeylow radon area
Japanese knotweed in Dublin364 records
BER ratings in Dalkeytypical B3
Planning applications in Dalkey847 applications
Planning permission in Dún Laoghaire-RathdownDún Laoghaire-Rathdown County Council
Planning permission in Dublin50,621 applications

GuideIs my house in a flood zone? What the OPW maps say and what insurers do with them

Questions people ask

Is Dalkey in a flood zone?: The OPW has not published modelled flood extents within 1.5 km of the centre of Dalkey. That is not the same as no risk: 5 past floods are on record nearby. Check the exact house, not the town.
Will a house in Dalkey be hard to insure against flooding?: Insurers price by postcode and by the OPW record. With 5 recorded events within 2 km, expect questions on the proposal form and possibly a flood exclusion on some streets. Ask the seller for their current policy schedule: if flood is excluded, you will inherit that problem.
What does the paid report add for a house in Dalkey, Dublin?: It puts the Eircode point against every OPW flood extent, lists recorded floods within 500 m with dates and OPW notes, checks GSI groundwater flood maps and coastal erosion, and ranks the result against the other thirty-seven checks (radon, BER, planning, knotweed, title, sewer and more) for that one address.

Sources

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