Is Blanchardstown in a flood zone?

The OPW has not published modelled flood extents within 1.5 km of the centre of Blanchardstown. 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 Blanchardstown 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 Blanchardstown, 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 · Blanchardstown, Dublin

Flooding in Blanchardstown: 5 recorded floods (OPW record)

The OPW register holds 5 recorded floods within 2 km of the centre of Blanchardstown. 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 Blanchardstown

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

One specific house in Blanchardstown: 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 Blanchardstown

The Office of Public Works keeps a register of past floods. Within 2 km of the centre of Blanchardstown it holds 5 events, the latest in 2002. By source: river (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:

November 2002: M50 at the N3 Interchange Nov 2002 (runoff). Remedial measures to Road drainage have been undertaken since flooding occurred.
November 2002: Tolka Navan Road Adj to Tolka Valley Park Nov 2002 (river).
November 2002: Tolka River Pinebrook Hartstown Nov 2002 (river). Surface water ditches surcharged in 2000 turning park into a lake and flooding houses in Pinebrook. Subsequent remedial works have been carried out.
November 2000: Pinebrook Hartstown Nov 2000.
undated: Tolka Herbert Road Blanchardstown Undated (river).

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 Blanchardstown

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

Nearby: Clonsilla, Castleknock, Clonee, Hansfield, Hollystown, Palmerstown.

Other checks for Blanchardstown

Radon in Blanchardstownlow radon area
Japanese knotweed in Dublin364 records
BER ratings in Blanchardstowntypical C1
Planning applications in Blanchardstown418 applications
Planning permission in FingalFingal 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 Blanchardstown in a flood zone?: The OPW has not published modelled flood extents within 1.5 km of the centre of Blanchardstown. 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 Blanchardstown 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 Blanchardstown, 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.