Derryronan

225 registered freehold parcels lie mostly in Derryronan, from 11 m² to 144,427 m² (14.44 ha, 35.69 acres). The dashed line is the townland's boundary; 52 neighbouring parcels touch it.

Download the townland: DXF, in Irish Transverse Mercator metres, with its boundary, parcels and buildings; GeoJSON or KML.

No zone of a development plan covers Derryronan in the national zoning. Outside zoned towns and villages, the county development plan's rural policies apply to each application.

Source: Tailte Éireann and the Department of Housing (MyPlan), national zoning, CC BY 4.0.

• 24 Aug 2026N/a

  (a) retention of existing domestic garage; (b) to convert said domestic garage to a dwelling house complete with extensions and alterations together with a new septic tank system, percolation area and all associated works

  Permission · Mayo County Council, 2660674

• 28 Aug 2025N/a

  Section 5 Declaration: construction of anew slatted shed and underground slurry storage tank along with all associated site works

  Permission · Mayo County Council, 25355

• 2 Jul 2025Conditional

  alterations to porch layout on front elevation of existing dwelling house along with all ancillary site works

  Permission · Mayo County Council, 25268

• 20 Jun 2025Conditional

  Planning permission to construct a new dwelling house, new septic tank/sewerage treatment system and associated siteworks and services.

  Permission, 1 home · Mayo County Council, 2560403

• 28 Nov 2022Conditional

  retention permission for existing dwelling house as constructed along with all ancillary site works, previous planning ref No. P95/807

  Retention, 1 home · Mayo County Council, 221050

• 14 May 2020Conditional

  CONSTRUCT NEW AGRICULTURAL SHED ALONG WITH ANCILLARY SITE WORKS.

  Permission · Mayo County Council, 20305

• 7 Apr 2020Conditional

  CONSTRUCT DOMESTIC GARAGE TOGETHER WITH ALL ANCILLARY WORKS.

  Permission · Mayo County Council, 20239

• 13 Feb 2019Conditional

  RETAIN DWELLING HOUSE AS CONSTRUCTED, AMENDED SITE BOUNDARIES ALONG WITH ANCILLCARY SITE WORKS, P11/537 AND P16/766 REFERS

  Retention · Mayo County Council, 1986

• 4 Sept 2017Conditional

  CONSTRUCT DOMESTIC GARAGE ALONG WITH ALL ANCILLARY SITE WORKS, P11/537 AND P16/766 REFERS

  Permission · Mayo County Council, 17711

Source: National Planning Applications, Department of Housing, Local Government and Heritage, CC BY 4.0. Applicants are not shown.

Designated sites

• Proposed Natural Heritage Area: Killaturly Turlough 000511

Recorded monuments

• MA062-108002 Crannog
  Description

  The Archaeological Survey of Ireland (ASI) is in the process of providing information on all monuments on The Historic Environment Viewer (HEV). Currently the information for this record has not been uploaded. To access available information for research purposes please make an appointment in advance with the Archive Unit (open Fridays 10.00 am – 5.00 pm), Department of Housing, Local Government and Heritage, The Custom House, Dublin 1 D01W6XO or email NMarchive@housing.gov.ie.

• MA072-018001 Ringfort - unclassified
  Description

  In pasture, located on the NW slope of a prominent rise, with very good views over the surrounding undulating grassland and bog. Substantially raised circular area or platform (42m N−S; 42m N−S) defined by an earthen scarp (Wth slope 2.5m; 2.2m at N, 1.75m at E, c. 3m at NW) topped with remnants of a bank or wall. Traces of a fosse (Wth 3m) with an external earth and stone bank (c. 3m; ext. H c. 1m) are evident at NW, largely obscured by overgrowth. A low internal stony lip (Wth 2-3m) tops the scarp at E−SE and SW−W, defined on its inner edge by drystone facing (H 0.5mat SE, 1m at SW). At N−NE a freestanding drystone wall (Wth 0.8m; H 0.8m) follows the curve of the scarp but is set 2m in from its top edge. There is drystone facing (H 1.5m) on the external slope of the scarp at S−SW. It is not clear to what extent the stone facing and drystone walling is original or results from the incorporation of the ringfort into a system of later field walls. The platform scarp is lowest on the SE arc, and at SSE there is a broad, dilapidated gap (Wth 4m), with traces of stone facing on the SW side, which may be the site of an original entrance. There is a souterrain (MA072-018002-) in the N half of the interior. A possible house (MA072-018004-), evident as a low circular platform, is located in the centre of the N half of the interior, a few meters SE of the souterrain. A ruined field wall (H 0.5m) crosses the interior, partitioning off the W half. Blackthorn, hawthorn and hazel trees thickly ring the ringfort perimeter, and encroach on the interior at NW and N. Dense thistles and weeds in the interior. Compiled by: Jane O’Shaughnessy Date of upload: 26 March 2021

• MA072-018002 Souterrain
  Description

  In the N half of a ringfort (MA072-018001-). This souterrain is indicated as ‘Cave’ in the NW quadrant of the ringfort on the 1930 OS 6-inch map. An opening (2m E−W; 1m N−S), with a roof lintel exposed on its S edge, is evident at ground level. It opens into the N end of a subterranean passage (L 4.2m N−S; Wth 0.8m; H c. 1.1m) which extends to S. The walls are built of rough, rounded stone rubble. The roof is a horizontal, row of large, contiguous or overlapping stone slabs/lintels. The earthen floor rises sharply towards the S end of the passage, until it reaches the level of the lintels, where a small, narrow gap is visible, opening at ground surface. This rising floor level may be partly the result of soil collapse and infill. According to local information, the S end of the chamber opens into a small chamber. Compiled by: Jane O’Shaughnessy Date of upload: 26 March 2021

• MA072-018003 Souterrain
  Description

  The Archaeological Survey of Ireland (ASI) is in the process of providing information on all monuments on The Historic Environment Viewer (HEV). Currently the information for this record has not been uploaded. To access available information for research purposes please make an appointment in advance with the Archive Unit (open Fridays 10.00 am – 5.00 pm), Department of Housing, Local Government and Heritage, The Custom House, Dublin 1 D01W6XO or email NMarchive@housing.gov.ie.

• MA072-018004 House - early medieval
  Description

  In the N half of a ringfort (MA072-018001-). A low sod-covered circular platform (6.8m E−W; 5.5m N−S; H 0.65 at E) is located in the centre of the N half of the interior, a few meters SE of an opening to a souterrain (MA072-018002-). It may be the foundation of a house. It is partly obscured by overgrowth. Compiled by: Jane O’Shaughnessy Date of upload: 26 March 2021

• MA072-019001 Ringfort - rath
  Description

  In pasture, in a thicket of hazel, hawthorn and blackthorn, located on a low rise, with good view of surrounding grassland. Raised circular area (30.4m N–S; 30m E–W) defined by an earthen scarp (H 1.6m at N, 1m at S) with remnants of a low internal lip (Wth 2m; int. H 0.2m), topped in parts with stone. Outside the scarp is an encircling fosse (Wth 2-2.5m), on the outer edge of which is a stone bank (Wth 2m; int. H 0.7m; ext. H 0.5m). The external stone bank survives at NW–NE as a moss-covered stony rise, but elsewhere is incorporated into a later field wall, a section of which at SW–NW serves as a property boundary. There is a square stone-built structure (3m NW–SE; 3.3m NE–SW), defined by a rough stone wall (Wth 0.8-1m; H 0.2m), on top of the enclosing scarp at SW. Its function is uncertain. At S a low section (Wth c. 4m) of the scarp opens onto a ‘passage’ (Wth 2.3m), flanked by on each side by a rough wall of loose stone rubble, which leads across the fosse to a break (Wth 2. 2m) in the external stone bank. This appears to be a relatively recent feature and may not be an original entrance. Immediately to W, is another entrance-like feature. It consists of a break (W 2.3m) in the scarp, roughly lined with stones, which opens onto a possible causeway (Wth 2. 2m) across the fosse. At its outer end it is blocked by stones and obscured by overgrowth and it is unclear if there is a corresponding break in the external stone bank. The interior is stony underfoot. A possible circular house (MA072-019003-) is located slightly to E of centre. Two lines of stones, possibly ruined walls, radiate from the possible house to the enclosing scarp, one (Wth 1m) extending to NW and the other (Wth 0.6m) to the NE. According to local tradition, there is a souterrain (MA072-019002-) associated with the rath. A thicket of hazel trees covers the rath interior. There is a rath (MA072-020----) c. 200m to SE. Compiled by: Jane O’Shaughnessy Date of upload: 22 February 2021

• MA072-019002 Souterrain
  Description

  At a rath (MA072-019). There is a local tradition of a souterrain associated with the rath (MA072-019). According to one local source, the souterrain may have been outside the rath. Its exact location is now unknown. Compiled by: Jane O’Shaughnessy Date of upload: 22 February 2021

• MA072-019003 House - indeterminate date
  Description

  In a rath (MA072-019). This possible house is evident as a circular concentration (diam. 5.7m) of stones, located slightly to E of centre in the rath interior, in an area strewn with loose stone. Its perimeter is defined by a ring of stones, best preserved on the W half, which may represent rough wall footings (Wth 0.8m). It is partly obscured by hazel scrub and difficult to examine; it may simply be a heap of field clearance stones. Two lines of stones, which appear to be ruined walls, radiate from the circular feature to NW (Wth 1m) and NE (Wth 0.6m) to the enclosing scarp of the rath. Compiled by: Jane O’Shaughnessy Date of upload: 22 February 2021

• MA072-020 Ringfort - rath
  Description

  In pasture, located on a slight rise, overlooked to E by a higher ground. This rath is shown on the1838 OS 6-inch map as a circular ringfort-sized enclosure; it is not shown on the 1930 edition. It has been levelled. The barely discernible outline of a roughly circular area (diam. c. 20m) defined by a bank, outside which there is a fosse with an external bank, can still be traced. The inner bank is evident as a very low rise (Wth c. 1.7m), the fosse as a slight depression (W c. 1.8m) and the outer bank as a barely discernible undulation (Wth c. 1.8m). At W and S the remains of the fosse and external bank merge to form a low terrace (Wth c. 3.5m). The interior is level. A slightly raised linear feature (W 3m; H 0.2m) extends from close to the bank at E into the interior for 7m to WSW, possibly the remnant of a field boundary. At SE a shallow hollow/area of disturbance (diam. 4-4.5m) cuts across the inner bank. There is a cashel (MA072-022----) 200m to E, a rath (MA072-019001-) 220m to NNW and an enclosure (MA072-021001-) c. 100m to S. Compiled by: Jane O’Shaughnessy Date of upload: 26 March 2021

• MA072-021001 Enclosure
  Description

  In pasture, in a thicket of hazel and hawthorn. Views restricted now by hedgerows and overgrowth. Shown on the 1838 OS 6-inch map as a circular embanked enclosure, and on the 1930 edition as a polygonal area incorporated into a system of field walls. A roughly circular area (27.6m E–W; 25.6m N–S) is defined by a low stony rise/bank (Wth 2.6m; int. H 0.3m; ext. H 0.15m, at E), best defined at N–E. The interior is level and is not noticeably raised, and at NE appears slightly sunken relative to exterior ground level. At NW–NE the stone bank is incorporated into a later field wall, and two other field walls traverse the interior at SE and W. According to local information, there is a cross inscribed stone at an enclosure (MA072-021001). A rath (MA072-020----) and a cashel (MA072-022----) are located 100m to N and 230m to NE. There is a possible crannog (MA072-096----) 240m to W. Compiled by: Jane O’Shaughnessy Date of upload: 26 March 2021

• MA072-021002 Cross-inscribed stone
  Description

  At an enclosure (MA072-021001). According to local information, there is a cross inscribed stone at an enclosure (MA072-021001). It was not located during an inspection in 1997. Compiled by: Jane O’Shaughnessy Date of upload: 26 March 2021

• MA072-022 Ringfort - cashel
  Description

  In pasture, located on a low rise, with good but not extensive views. Raised circular area (31m N–S; 31m E–W) defined by an earthen scarp (ext. H 1.45m at NE, 1.3m at SW) topped with wall footings, outside which is a fosse and possible outer bank/wall. The wall footings (Wth 1.5-2m) survive to a height of two to three courses (int. H 0.8m) at NE–E, but elsewhere they are dilapidated, reduced to a low stone bank with remnants of the inner or outer facing visible only intermittently; at NNW–NE they have been subsumed into a later field wall. The base of the scarp is enclosed by a well defined fosse (Wth 4m; D c. 0.5m), a section of which at SW is infilled with field clearance stones. At N–NE the outer edge of the fosse is defined by an earth and stone bank (Wth c. 2m; int. H 0.6m; ext. H 0.45m), and at NE–W by a field wall (Wth 0.6-1m; H 1.2m). At NW–N the outer bank/wall has been levelled. The entrance is likely to have been at ESE where there is a dilapidated gap (Wth 1.8m) in the scarp, flanked on the N side by massive stone blocks, leading to a rough causeway across the fosse. There are also broad low areas or breaks in the scarp at SSW (Wth 4m) and at WNW (Wth 4m), but these appear to be the result of relatively recent modification. The interior has a gentle slope down from centre to W and SW. A depression (Wth c. 4m; D 0.5m) extends from the enclosing wall at N for 8m to S toward the centre of the interior, possibly a souterrain (MA072-022001-). An area of rough paving is evident in the S half of the interior. It consists a strip (Wth 2-3m E–W) of large horizontal slabs which extend from the centre of interior for several meters to S towards the break in the scarp at SSW. Some of the slabs appear deeply embedded but others rest on the surface. A few hawthorn bushes grow on the perimeter and in the interior. There is a rath (MA072-020----) c. 200m to W and an enclosure (MA 072-021001-) c. 230m to SW. A rath (MA072-018001-) is visible on a prominent rise c. 500m to N. Compiled by: Jane O’Shaughnessy Date of upload: 26 March 2021

• MA072-022001 Souterrain
  Description

  Located within the N half of a cashel (MA072-022). An oblong depression (Wth c. 4m E–W; D 0.5m) extends from the enclosing wall of the cashel at N for 8m to S toward the centre of the cashel interior. No stone or structural features are evident, but be the remains of a collapsed a souterrain. Compiled by: Jane O’Shaughnessy Date of upload: 26 March 2021

• MA072-023 Enclosure
  Description

  In pasture, located on an E−W ridge, at the break of slope on the S side. This monument is indicated on the 1838 OS 6-inch map as a circular embanked enclosure and on the 1930 edition as a roughly D-shaped enclosure bordered on the straight side at W by a N−S road, which leads to a farmstead at N. A slightly raised D-shaped area (22.5m N−S; 19.2m E-W to road) defined on the curving E side by remnants of a stony bank and bordered on the straight side at W by a sunken road (Wth 3.6m; D 1.8m below enclosure interior), which cuts through the slope of the ridge and has truncated the W edge of the originally circular enclosure. The enclosing bank (Wth 3.8m at N, 2.5m at S; int. H 0.2m; ext. H 0.6m at N, 1.4m at S) is reduced to a broad, low stony rise; the external slope at S is enhanced by the natural ridge slope. There is a break (Wth 2m) at N. The interior is level and grassy. Compiled by: Jane O’Shaughnessy Date of upload: 30 March 2021

• MA072-095 Water mill - horizontal-wheeled
  Description

  In pasture, located in a boggy depression, bordered to W by a small river. The river bank is lined with heaps of upcast material from dredging. According to local information, a large oak beam from a horizontal-wheeled water mill was dug out at roughly this location during drainage operations. There is no visible trace at ground level. There is a rath (MA072-006----) c. 100m to N. Compiled by: Jane O’Shaughnessy Date of upload: 21 May 2021

• MA072-096 Crannog
  Description

  In a natural depression of boggy ground. Listed in the SMR (1991) and the RMP (1996) based on a report from a local source that remains of a possible crannog were seen when reclamation works were undertaken in this area. No visible trace at ground level. Compiled by: Jane O’Shaughnessy Date of upload: 21 May 2021

• MA072-097001 Habitation site
  Description

  In pasture, on slightly elevated ground. According to local information, traces of possible houses and hearths and a possible burial (MA072-097002-) were uncovered here. No visible trace at ground level. Compiled by: Jane O’Shaughnessy Date of upload: 21 May 2021

• MA072-097002 Burial
  Description

  In pasture, on slightly elevated ground. According to local information, a possible burial or cist was uncovered here, as well as traces of possible houses and hearths (MA072-097001-). No visible trace at ground level. Compiled by: Jane O’Shaughnessy Date of upload: 21 May 2021

• MA072-098 Field boundary
  Description

  Located in rough, heather-covered terrain in an area of cut-away bog. A low, heather-covered rise or bank (Wth 1m; H 0.45m) composed of peaty soil with occasional stones, extends for c. 250m on a ENE–WSW axis across a gently undulating expanse of peatbog. Compiled by: Jane O’Shaughnessy Date of upload: 21 May 2021

• MA072-106 Penitential station
  Description

  According to local information, this natural depression or swallow hole (diam. 10-15m), which is indicated on the 1930 OS 6-inch maps as a circular hachured feature, was associated with a traditional ‘pattern’ or religious ritual. It is partly infilled with loose field stones. Compiled by: Jane O’Shaughnessy Date of upload: 26 May 2021

Architectural heritage

No building of the National Inventory of Architectural Heritage stands in the townland of Derryronan.

Designated sites: National Parks and Wildlife Service. Recorded monuments: Sites and Monuments Record, National Monuments Service. Buildings: National Inventory of Architectural Heritage. Department of Housing, Local Government and Heritage, CC BY 4.0. Works at or in relation to a recorded monument need two months' written notice to the National Monuments Service (National Monuments (Amendment) Act 1994, section 12).

Radon

About 1 in 5 homes in this area is likely to have high radon levels. Testing a home

Landslides

Susceptibility moderately low, low, low (inferred), on the 1:50,000 map.

Terrain model

No LiDAR survey of the Office of Public Works covers the centre of the townland of Derryronan.

Flooding

The flood maps of the Office of Public Works: floodinfo.ie.

Radon Risk Map of Ireland, Environmental Protection Agency; Landslide Susceptibility Classification, Geological Survey Ireland; both CC BY 4.0. LiDAR: contains Irish Public Sector Data (Geological Survey Ireland & the Office of Public Works) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence.

No address of the register names Derryronan with five sales or more. The sales of the area are on the page of Co. Mayo.

Name

Derryronan · Doire Rónáin

Area

4,016,485 m² (401.65 ha, 992.5 acres)

Civil parish

Kilconduff, and its townlands

Barony

Gallen

Electoral division

Swineford, the unit of the census

Census 2022

Swineford electoral division: 2,629 people in 1,062 households; 76% of households own their home; 28% of homes were built since 2001; 20% of dwellings stood vacant on census night, and 7% were holiday homes.

Neighbouring townlands

Barnacahoge, Carrowcanada, Castlesheenaghan, Cuillaun, Curryaun, Kilbride, Killaturly, Knockranny

Placenames

Derryronan on logainm.ie, the Placenames Database of Ireland

Townlands, civil parishes, baronies and electoral divisions, National Statutory Boundaries, Tailte Éireann, CC BY 4.0. Census 2022, Small Area Population Statistics by electoral division, Central Statistics Office, CC BY 4.0. A townland is the smallest land division of Ireland, and the unit of a rural address; old registers such as the 1901 and 1911 censuses file it under its civil parish and barony.