| Carnaveagh, Latton, Castleblayney | €75,000 | 2021-05-12 |
| Carnbane, Smithborough, Monaghan | €150,000 | 2022-06-01 |
| Carnbane, Threemilehouse, Monaghan | €232,000 | 2021-12-06 |
| Carnquill, Scotstown, Monaghan | €15,000 | 2015-09-03 |
| Carnroe, Scotshouse, Co. Monaghan | €220,000 | 2023-06-23 |
| Carown House, Shelvins, Glaslough | €335,000 | 2017-11-23 |
| Carrachor, Scotstown, Monaghan | €280,000 | 2026-01-21 |
| Carragaghdoo, Castleblayney | €112,450 | 2017-11-17 |
| Carragartha, Carrickmacross, Monaghan | €300,000 | 2019-03-11 |
| Carragartha, Dundalk Rd, Castleblayney | €100,000 | 2021-11-18 |
| Carragill, Cloughvalley, Carrickmacross | €316,925 | 2023-04-21 |
| Carrick Rd, Ballybay, Monaghan | €100,000 | 2017-11-01 |
| Carrick Rd, Castleblayney, Monaghan | €245,000 | 2020-12-21 |
| Carrickabane, Latton, Castleblayney | €250,000 | 2024-01-26 |
| Carrickaderry, Clontibret | €390,000 | 2011-07-14 |
| Carrickaderry, Clontibret, Monaghan | €97,500 | 2015-10-27 |
| Carrickadoohey, Castleblayney, Monaghan | €44,053 | 2015-03-18 |
| Carrickadooley, Co Monaghan | €44,053 | 2017-05-04 |
| Carrickadooley, Co Monaghan, Monaghan | €50,000 | 2019-04-16 |
| Carrickaduff, Castleblayney, Monaghan | €80,000 | 2014-06-16 |
| Carrickagarran, Creamore, Monaghan | €85,000 | 2016-05-22 |
| Carrickagarvan, Castleblayney | €120,000 | 2013-08-29 |
| Carrickagarvan, Castleblayney, Monaghan | €380,000 | 2025-09-03 |
| Carrickahogue, Shercock P O, Carrickmacross | €90,000 | 2014-10-31 |
| Carrickakelly, Inniskeen | €229,225 | 2020-02-07 |
| Carrickakelly, Inniskeen, Monaghan | €225,000 | 2015-07-31 |
| Carrickanure, Annyalla, Castleblayney | €60,000 | 2023-04-21 |
| Carrickanure, Ballybay, Monaghan | €206,000 | 2019-04-17 |
| Carrickartagh, Corduff, Carrickmacross | €135,000 | 2011-05-12 |
| Carrickasedge, Carrickmacross, Monaghan | €445,000 | 2023-06-09 |
| Carrickasedge, Magheracloone, Carrickmacross | €134,000 | 2018-04-26 |
| Carrickashedge, Carrickmacross, Monaghan | €270,000 | 2024-10-24 |
| Carrickashedoge, Magheracloone, Carrickmacross | €342,500 | 2022-07-05 |
| Carrickaslane, Annyalla, Castleblayney | €420,000 | 2024-03-08 |
| Carrickaslane, Castleblaney, Co Monaghan | €205,000 | 2019-04-17 |
| Carrickaslane, Castleblayney, Co. Monaghan | €20,000 | 2015-03-31 |
| Carrickaslane, Castleblayney, Monaghan | €214,000 | 2020-08-11 |
| Carrickatee, Loughmourne | €100,000 | 2015-03-10 |
| Carrickatee, Loughmourne, Castleblayney | €170,000 | 2022-08-24 |
| Carrickaveilty, Latton, Castleblayney | €40,000 | 2015-09-25 |
| Carrickavelty, Latton Po, Castleblaney | €160,000 | 2015-02-10 |
| Carrickavelty, Latton Po, Castleblayney | €120,000 | 2015-09-25 |
| Carrickavelty, Latton, Castleblayney | €140,000 | 2012-08-30 |
| Carrickhogue, Shercock, Cavan | €55,000 | 2016-06-07 |
| Carrickmaclim, Carrickmacross, Monaghan | €100,000 | 2023-12-14 |
| Carrickmore, Stonebridge, Clones | €150,000 | 2024-03-01 |
| Carricknagoan & Feahoe, Carrickmacross | €30,000 | 2013-07-04 |
| Carricknagoan, Coolderry, Carrickmacross | €75,000 | 2023-11-30 |
| Carricksedge, Carrickmacross, Monaghan | €43,333 | 2018-10-25 |
| Carrigamore, Carrickmacross | €125,000 | 2010-09-03 |
| Carrigans, Emyvale | €120,000 | 2010-06-09 |
| Carrigans, Emyvale, Monaghan | €235,500 | 2023-11-27 |
| Carrigarry, Castleblayney | €55,000 | 2020-01-13 |
| Carrowhatta, Scotstown, Monaghan | €165,000 | 2026-09-10 |
| Carson, Dartrey, Cootehill | €206,000 | 2025-12-16 |
| Carson, Dartrey, Rockcorry | €199,000 | 2014-10-16 |
| Carson, Dartry, Cootehill | €95,000 | 2018-03-07 |
| Carson, Dartry, Via Cooethill | €190,000 | 2021-07-30 |
| Carson, Darty, Cootehill | €160,000 | 2018-12-05 |
| Cashel, Annyalla, Castleblayney | €300,000 | 2026-01-15 |
| Cashell, Annyalla | €35,000 | 2011-08-24 |
| Cashlan East, Carrickmacross | €30,000 | 2013-05-31 |
| Cashlan West, Carrickmacross, Monaghan | €285,000 | 2024-10-09 |
| Cashlan West, Lisdoonan, Carrickmacross | €310,000 | 2021-08-24 |
| Cashlan, Lisdoonan, Carrickmacross | €140,000 | 2012-03-01 |
| Cashlan, Newbliss, Monaghan | €200,000 | 2022-05-13 |
| Castle Square, Castleblayney, Co. Monaghan | €200,000 | 2016-07-05 |
| Castlebarnagh House, Clonkeencole, Clones | €175,000 | 2017-12-04 |
| Castleblaney Rd, Carrickmacross, Monaghan | €235,000 | 2023-04-11 |
| Castleblaney Road, Carrickmacross | €49,500 | 2010-07-07 |
| Castleblaney Road, Carrickmacross, County Monaghan | €200,000 | 2024-12-20 |
| Castleblayney Equestrian Centre, Bree, Castleblayney | €15,000 | 2017-05-05 |
| Castleblayney Rd, Ballybay, 1 Folly Court | €500,000 | 2020-11-20 |
| Castleblayney Rd, Ballybay, Monaghan | €180,000 | 2022-11-08 |
| Castleblayney Road, Carrickmacross | €150,000 | 2012-12-13 |
| Castleblayney Road, Carrickmacross, Co. Monaghan | €156,000 | 2010-04-12 |
| Castleshane, Demesne, County Monaghan | €50,000 | 2024-12-20 |
| Castlesquare, Castleblayney, Monaghan | €175,000 | 2025-01-15 |
| Cathedral Rd, Latlurcan, Monaghan | €310,000 | 2025-12-09 |
| Cavanacross, Scotstown, Co Monaghan | €76,000 | 2017-04-03 |
| Cavanacross, Scotstown, Monaghan | €255,000 | 2018-05-22 |
| Cavanagarvan, Monaghan | €95,000 | 2021-07-30 |
| Cavanagarvan, Stranooden, Monaghan | €260,000 | 2025-11-03 |
| Cavanageeragh, Carrickmacross, Monaghan | €185,000 | 2022-03-03 |
| Cavanageragh, Carrickmacross, Monaghan | €525,000 | 2024-06-21 |
| Cavanaguilla, Castleblayney, Monaghan | €198,000 | 2024-09-11 |
| Cavanaguillagh, Castleblayney, Monaghan | €300,000 | 2022-11-01 |
| Cavancope, Emyvale, Co Monaghan | €13,800 | 2024-02-08 |
| Cavancreevy, Castleshane, Monaghan | €200,000 | 2017-05-17 |
| Cavanleckagh, Emyvale | €68,100 | 2012-07-05 |
| Cavanmoutray, Emyvale, Monaghan | €220,000 | 2022-12-02 |
| Cavanreagh, Scotshouse, Monaghan | €37,500 | 2015-12-21 |
| Cavany, Scotshouse | €57,000 | 2012-01-19 |
| Cavnaguilla, Castleblayney, Co Monaghan | €165,000 | 2021-07-28 |
| Cedarcrest, Latlurcan, Monaghan | €292,500 | 2026-06-12 |
| Chestnut House, Greagh Corduff, Carrickmacross | €69,771 | 2024-09-12 |
| Chestnut Lodge, Cornacarrow, Tullynahinera | €150,000 | 2016-08-27 |
| Church House, Ballinode, Monaghan | €180,000 | 2026-04-28 |
| Church St, Ballybay, Monaghan | €60,000 | 2021-06-04 |
| Church St, Carrickmacross, Co Monaghan | €110,000 | 2019-03-07 |
| Church St, Castleblaney, Monaghan | €76,000 | 2022-02-18 |
| Church St, Castleblayney, Co Monaghan | €100,000 | 2024-07-12 |
| Church St, Castleblayney, Monaghan | €182,000 | 2024-07-29 |
| Church Street, Castleblayney | €40,000 | 2013-03-15 |
| Church View House, Church St, Castleblayney | €215,000 | 2019-07-24 |
| Cionn Torc, Park Rd, Monaghan | €278,500 | 2021-04-26 |
| Clanickny, Glaslough | €180,000 | 2010-06-23 |
| Clanicky, Glass Lodge, Monaghan | €155,000 | 2015-03-27 |
| Clara House, Aughacloughan, Carickmacross | €225,000 | 2020-04-01 |
| Claragh, Rockcorry, Co. Monaghan | €42,000 | 2013-06-24 |
| Clare Oghill, Castleblayney, Monaghan | €130,000 | 2025-02-13 |
| Clareoghill, Castleblaney, Co.monaghan | €400,000 | 2026-03-13 |
| Clareoghill, Castleblaney, Monaghan | €280,000 | 2022-11-18 |
| Clarkes Cottage, Dromore, Stranooden | €75,000 | 2021-04-16 |
| Clerran, Castleshane, Co Monaghan | €90,000 | 2021-03-25 |
| Clocharan, Killybreen, Emyvale | €75,000 | 2025-01-29 |
| Cloghan, Annyalla, Co. Monaghan | €319,000 | 2025-12-15 |
| Cloghernagh, Tydavnet, Monaghan | €280,000 | 2025-10-31 |
| Clonagore, Cavan Road, Co. Monaghan | €60,000 | 2018-08-31 |
| Clonagore, Clones, Monaghan | €125,000 | 2017-09-11 |
| Clonaneor, Doohamlet, Castleblayney | €100,000 | 2012-11-23 |
| Clonavarne, Threemilehouse, County Monaghan | €270,000 | 2023-10-09 |
| Clonavilla, Clones, Monaghan | €125,000 | 2019-02-27 |
| Clonavogy, Castleblaney, Monaghan | €170,000 | 2016-02-17 |
| Clonboy, Clones, Monaghan | €93,000 | 2020-02-11 |
| Cloncaw, Glaslough, Co. Monaghan | €296,997 | 2025-11-11 |
| Cloncaw, Glaslough, Monaghan | €550,000 | 2025-08-21 |
| Cloncurrin, Clones, Monaghan | €310,000 | 2022-03-02 |
| Clondergole, Clones, Co Monaghan | €80,500 | 2020-03-31 |
| Clondergole, Clones, Monaghan | €295,000 | 2024-06-21 |
| Clonedergole, Clones, Monaghan | €140,000 | 2022-08-26 |
| Clonedergole, Newtownbutler Rd, Clones | €130,000 | 2017-02-15 |
| Clones Rd, Monaghan, Monaghan | €700,000 | 2024-11-20 |
| Clonesboyle, Emyvale, Monaghan | €90,000 | 2026-06-12 |
| Clonfad, Drummully, Clones | €250,000 | 2026-04-23 |
| Cloniston, Drumully | €20,000 | 2012-05-24 |
| Clonkeencole, Clones, Co Monaghan | €100,000 | 2023-11-10 |
| Clonkeencole, Clones, Monaghan | €250,000 | 2024-12-13 |
| Clonkirk, Clones, Monaghan | €275,000 | 2026-04-15 |
| Clonmore, Clones | €93,000 | 2013-07-29 |
| Clonmore, Clones, Co Monaghan | €100,000 | 2015-04-02 |
| Clonmore, Clones, Monaghan | €225,000 | 2024-07-22 |
| Clonoula, Drumully, Clones | €60,500 | 2011-11-09 |
| Clonseady, Carrickmacross, Monaghan | €232,500 | 2015-11-09 |
| Clonseady, Magheracloone, Co Monaghan | €198,000 | 2015-10-06 |
| Clonshanvo, Clones, Monaghan | €20,000 | 2015-10-21 |
| Clontask, Drummully, Clones | €38,000 | 2019-03-22 |
| Clontoe, Ballinode, Monaghan | €58,000 | 2019-05-10 |
| Clontreat, Clones, Co Monaghan | €43,000 | 2023-09-15 |
| Clontubber, Drum | €122,000 | 2010-10-28 |
| Clontybunnia, Scotstown, County Monaghan | €33,000 | 2021-05-27 |
| Clontybunnia, Scotstown, Monaghan | €235,000 | 2025-07-25 |
| Clontycasta, Tedavnet, Co. Monaghan | €200,000 | 2026-05-06 |
| Cloonavogey (main Property), Broomfield, Castleblaney | €505,000 | 2025-03-24 |
| Closagh, Rockcorry, Monaghan | €25,000 | 2016-01-28 |
| Clossagh Beg, Rockcorry, Monaghan | €152,000 | 2014-08-26 |
| Clossagh More, Rockcorry, Monaghan | €177,000 | 2015-12-17 |
| Cloughnart, Monaghan | €190,000 | 2017-06-15 |
| Cloughvalley Lower, Carrickmacross | €230,000 | 2013-02-07 |
| Cloughvalley Lower, Carrickmacross, Monaghan | €430,000 | 2024-08-20 |
| Cloughvalley Upper, Carrickmacross | €230,000 | 2011-12-02 |
| Cloughvalley Upper, Castleblayney Road, Carrickmacross | €144,000 | 2010-05-06 |
| Cloughvalley, Carrickmacross, Monaghan | €189,500 | 2024-11-15 |
| Cluain Mhuire, Lathlurcan, Monaghan | €205,000 | 2023-09-27 |
| Cluainin, Bree, Castleblaney | €150,000 | 2015-06-16 |
| Cluny Donaghamoyne Road, Carrickmacross, Co.monaghan | €145,000 | 2015-02-06 |
| Cnoc Mhuire, Knocknagarnaman, Inniskeen | €295,000 | 2018-03-23 |
| Coas House 1, Tullynahinera, Castleblayney | €227,000 | 2015-08-19 |
| Coas Tullynahinera Castleblaney, Monaghan | €188,000 | 2020-02-14 |
| Coas, Tullynahinera, Castleblayney | €75,000 | 2019-10-24 |
| Coeef, Tullinahivera, Castleblayney | €180,000 | 2014-08-05 |
| Cohershinagh, Shantonagh, Castleblayney | €15,000 | 2022-12-21 |
| Colga, Inniskeen, Co Monaghan | €95,000 | 2025-03-20 |
| Comertagh, Carrickmacross | €22,000 | 2012-11-12 |
| Comertagh, Raferagh, Carrickmacross | €142,500 | 2012-11-29 |
| Conabury Cottage, Conabury, Castleblayney | €315,000 | 2024-10-10 |
| Conabury Hill, Castleblayney, Monaghan | €325,000 | 2023-01-24 |
| Conabury, Castleblayney | €80,000 | 2012-09-11 |
| Conabury, Castleblayney, Co Monaghan | €251,000 | 2026-04-14 |
| Conabury, Castleblayney, Monaghan | €320,000 | 2025-07-30 |
| Conaghy, Newbliss | €185,000 | 2010-12-10 |
| Concra, Castleblayney, Monaghan | €100,000 | 2023-12-05 |
| Convent Of Mercy, Castleblayney, Co Monaghan | €575,000 | 2024-12-20 |
| Coohey, Ballybeg, County Monaghan | €110,000 | 2019-05-23 |
| Coohey, Ballyday, Co Monaghan | €50,000 | 2026-05-15 |
| Coolaha, Carrickmacross, Co. Monaghan | €92,500 | 2024-02-16 |
| Coolaha, Killanny, Carrickmacross | €250,000 | 2012-08-24 |
| Coolartra, Clontibret, Monaghan | €180,000 | 2023-03-09 |
| Coolartragh, Castleblayney, Monaghan | €470,000 | 2022-04-28 |
| Coolartragh, Clonibret, County Monaghan | €405,000 | 2025-12-15 |
| Coolartragh, Clontibret, Monaghan | €175,000 | 2020-12-10 |
| Coolbawn, Coolmain, Monaghan | €129,375 | 2018-06-11 |
| Coolcair, Donaghmoyne, Carrickmacross | €75,000 | 2023-07-13 |
| Coolcollid, Glaslough, Co Monaghan | €115,000 | 2020-12-22 |
| Coolcorragh, Three Mile House, Monaghan | €120,000 | 2026-01-20 |
| Coolderry, Carrickmacross, Co Monaghan | €50,000 | 2014-07-29 |
| Cooleremoney, Ballymackney, Carrickmacross | €250,000 | 2026-02-04 |
| Cooleyview, Carrickmacross, Monaghan | €160,000 | 2015-11-06 |
| Coolfore, Carrickmacross, Monaghan | €195,000 | 2016-04-05 |
| Coolkill East, Ballybay, Co Monaghan | €160,000 | 2026-06-11 |