checkmyhouse.ie

Planning applications · Co. Mayo

Planning permission in Co. Mayo: register, 677 applications

677 planning applications were lodged within 2 km of the centres of 4 towns in Co. Mayo in the last three years, 15 of them for ten homes or more (430 units). Below: how to search the Co. Mayo register, the busiest towns, the largest schemes on file, and what to check around one house before you bid.

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

677 planning applications around 4 towns in Co. Mayo in three years, 15 for ten homes or more.

One specific house in Co. Mayo: planning applications within 300 m of that Eircode, the house's own planning file, flood zone, radon, 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.

677

planning applications within 2 km of 4 town centres in the last three years

15

of them for 10 homes or more

430

residential units in those large applications

How to search planning applications in Co. Mayo

Short answer: open the National Planning Application Map on MyPlan.ie, type the address or Eircode, and every application lodged with any council appears as a dot you can click. For the full file (drawings, reports, conditions, appeal) go to the council’s own register, Mayo County Council. Both are free.

  1. National map first. Search the address on the National Planning Application Map (MyPlan.ie), then zoom out to the 300 m around it. Each dot is an application with its reference number, description and decision.
  2. Then the council register. Search by the reference number, the address or a map area on the Mayo County Council register.
  3. Mayo County Council: search planning applications. The council uses the shared ePlanning system, so the search works the same way as in 22 other councils: search by reference, by address, by date range or by drawing a box on the map.
  4. Zoning last. The MyPlan.ie zoning map shows what the land around the house is allowed to become under the current development plan, which the register cannot tell you until someone applies.

For a house you are about to bid on, the paid report does all three for the Eircode: every application within 300 m with its decision, the house’s own planning and building-control files, and the zoning of the fields around it.

Where the planning office is busiest in Co. Mayo

Applications lodged within 2 km of each town centre since 2023, from the national planning register. A high count means an active town, not necessarily housing estates: extensions, one-off rural houses, shopfronts and retention applications all count.

Ballina196 applications, 1 large
Westport195 applications, 4 large
Castlebar184 applications, 7 large
Claremorris102 applications, 3 large

Largest schemes on file in Co. Mayo

Applications for ten homes or more near the towns above, largest first, with the status recorded on the register when this page was built:

  • 61 units, Castlebar, lodged 2025-10, application finalised (Mayo County Council): Full Planning Permission for the construction of 61 no. residential units consisting of 17 No. two storey detached houses, 24 no. two-storey semi-detached houses and 20 no. two storey terraced houses , providing for 6 no
  • 52 units, Westport, lodged 2025-09, application finalised (Mayo County Council): The development will consist of the construction of 97 residential units consisting of: 19 detached housing units (4-bed), 33 terraced housing units (2, 3 & 4-bed), 9 own-door apartments (1 & 2-bed), 18 ground floor terr
  • 43 units, Castlebar, lodged 2025-07, application finalised (Mayo County Council): 1. Construction of a housing development (Garryduff Park West) of 68 no. dwellings in two and three storey semi-detached and terraced houses and duplex/apartment configurations; 2. Vehicular and pedestrian/cycle access p
  • 41 units, Castlebar, lodged 2025-06, application finalised (Mayo County Council): 1. Construction of a housing development (Garryduff Park East) of 55 no. dwellings in two and three storey semi-detached and terraced houses and duplex / apartment configurations; 2. Vehicular and pedestrian/cycle access
  • 32 units, Castlebar, lodged 2024-09, application finalised (Mayo County Council): The development will consist of: 1) Construction of a housing development with a total of 32 no. dwellings in semi-detached, detached and terrace configurations, consisting of 1no. 4-bed detached house, 3no. 3-bed detach
  • 28 units, Claremorris, lodged 2024-09, application finalised (Mayo County Council): Construct a 31 unit housing development consisting of 6 no. 1 Bedroom Apartments, 6 no. 2 Bed Duplex Apartments, 16 no. 3 Bed Semi Detached Houses and 3 no. 4 Bed Detached Houses together with all ancillary site works an
  • 27 units, Claremorris, lodged 2024-07, application finalised (Mayo County Council): The development will consist of: (1) Construction of a housing development with a total of 27 no. dwellings in semi-detached & detached configurations, consisting of 1 no. 4-bed detached house, 1 no. 2-bed detached house
  • 26 units, Castlebar, lodged 2025-01, application finalised (Mayo County Council): Demolition of existing buildings and the construction of 33 no houses with access roads, connection to public services and all ancillary site works.

A permission that is granted but not yet built is invisible at a viewing. The register shows it. So does the zoning map for the fields around the house, which says what they are allowed to become.

Other checks for Co. Mayo

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

Planning applications by town in Co. Mayo

Other counties

GuidePlanning search before buying a house: the three files that matter

Questions people ask

How do I search planning applications in Co. Mayo?
Two ways. The National Planning Application Map on MyPlan.ie carries every council's register on one map: search the address, then look at the streets around it. The planning authority for Co. Mayo is Mayo County Council; each runs its own online planning search with the full file, drawings and decision, on the shared ePlanning.ie system. For a house you are buying, the 300 m around it matters more than the town count.
Which towns in Co. Mayo have the most planning activity?
By applications within 2 km of the town centre in the last three years: Ballina (196), Westport (195), Castlebar (184), Claremorris (102). Counts include extensions, one-off houses and changes of use, not only housing schemes.
Do I need planning permission for an extension in Co. Mayo?
The rules are national, not local. Since 27 July 2026 an extension to the rear of a house is exempt up to 45 square metres (40 before that date), counting every earlier extension, with limits on height, distance from boundaries and the garden left over (at least 25 square metres). Anything to the front, or beyond those limits, needs permission from the council. A Section 5 declaration from the council confirms in writing whether a specific job is exempt. Details in the guide on the 2026 planning exemptions.
Does planning permission nearby change what a house is worth?
A granted permission for a large scheme behind the house can take light, a view or parking, and it means construction traffic for two years. It can also add a school or a shop. Read the description, the decision and the appeal status before you bid. The report lists every application within 300 m of the Eircode with that detail, and checks the house's own planning and building-control file.

Sources

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