| Kiltubrid, Three Mile House, Monaghan | €171,500 | 2025-09-25 |
| Kiltubrid, Threemilehouse, Co Monaghan | €131,000 | 2016-11-03 |
| Kiltubrid, Threemilehouse, Monaghan | €100,000 | 2017-06-30 |
| Kincora House, Newtownbutler Road, Clones | €225,000 | 2026-06-19 |
| Kingscourt Road, Carrickmacross | €120,000 | 2014-03-04 |
| Kingston House, Main St, Glaslough | €350,000 | 2020-07-17 |
| Kinnagin, Castleblayney, Monaghan | €100,000 | 2016-12-15 |
| Kinnegan, Castleblayney, County Monaghan | €230,000 | 2024-12-02 |
| Kinnore, Cornamundy, Monaghan | €300,000 | 2025-06-13 |
| Knockagolis, Castleblayney | €100,000 | 2011-05-05 |
| Knockatallon, Monaghan, Monaghan | €30,000 | 2019-04-26 |
| Knockatallon, Scotstown, Monaghan | €378,000 | 2023-12-20 |
| Knockaturley, Monaghan, Monaghan | €200,000 | 2025-08-05 |
| Knockballyroney, Scotchtown, Co Monaghan | €115,000 | 2022-09-20 |
| Knockballyroney, Scotstown, Monaghan | €130,000 | 2020-03-30 |
| Knockconan, Emyvale, Co Monaghan | €145,000 | 2017-05-08 |
| Knockconan, Emyvale, Monaghan | €135,000 | 2018-03-21 |
| Knockcor, Tydavnet, Co Monaghan | €301,000 | 2024-02-21 |
| Knockgarman, Inniskeen, Co. Monaghan | €62,000 | 2017-04-28 |
| Knocknacran, Carrickmacross, Co Monaghan | €100,000 | 2023-01-23 |
| Knocknacran, Magheracloone, Carrickmacross | €350,000 | 2021-10-14 |
| Knocknacran, Maghercloone, Carrickmacross | €300,000 | 2021-09-20 |
| Knocknageeha, Knockatallon, County Monaghan | €60,000 | 2021-06-24 |
| Knocknagow, Corrybrennan, Ballybay | €150,000 | 2019-04-12 |
| Knocknagrave, Tydavnet, Monaghan | €340,000 | 2025-11-28 |
| Knocknamaddy, Ballybay, Co Monaghan | €250,000 | 2024-12-11 |
| Knocknamaddy, Ballybay, County Monaghan | €96,013 | 2013-12-06 |
| Knocknamaddy, Ballybay, Monaghan | €153,900 | 2026-06-30 |
| Knocknaneen, Castleblayney, Monaghan | €120,000 | 2014-08-06 |
| Knockreagh Lower, Broomfield, Castleblayney | €40,000 | 2012-10-26 |
| Knockroe, Clones Rd, Monaghan | €335,000 | 2022-07-11 |
| Knockronaghan, Emyvale, Monaghan | €160,000 | 2024-07-17 |
| Knockronaghan, Monaghan | €430,000 | 2026-02-13 |
| L7400 Drumar, Ballybay, Drumar | €200,000 | 2015-04-29 |
| La Casa Aperta, 19 Coolshannagh Rd, Monaghan | €255,000 | 2025-08-29 |
| Lacaroe, Newtowmbutler Rd, Clones | €65,000 | 2015-04-22 |
| Lackafin, Broomfield, Castleblaney | €400,000 | 2025-12-05 |
| Lackafin, Broomfield, Castleblayney | €274,000 | 2021-01-15 |
| Lackagh, Annyalla, Castleblaney | €65,000 | 2022-07-15 |
| Lackagh, Annyalla, Cremartin | €560,000 | 2025-12-03 |
| Lackagh, Cremartin, Monaghan | €350,000 | 2022-10-26 |
| Lackan, Castleblayney, Co. Monaghan | €60,000 | 2020-04-08 |
| Lackan, Latton, Castleblayney | €310,000 | 2020-03-27 |
| Lacken, Latton Post Office, Castleblaney | €21,000 | 2012-11-29 |
| Lacklum, Inniskeen | €200,000 | 2012-11-20 |
| Lacklum, Inniskeen, Monaghan | €37,000 | 2015-02-23 |
| Lagan Castleblayney, Castleblayney, Monaghan | €144,000 | 2021-12-17 |
| Lagan, Castleblayney, Monaghan | €100,000 | 2025-09-17 |
| Laggan, Castleblayney, Co. Monaghan | €127,000 | 2017-09-25 |
| Lakelands House, Annyalla, Castleblaney | €100,000 | 2022-04-05 |
| Lakeview Coolderry, Carricknagoan, Carrickmacross | €125,000 | 2020-03-19 |
| Lakeview House, Kiltubrid, Threemilehouse | €222,000 | 2019-06-28 |
| Lakeview, Dundalk Rd, Carrickmacross | €220,000 | 2023-01-19 |
| Lakeview, Lattinalbany, Carrickmacross | €92,000 | 2020-01-06 |
| Lannatt, Inniskeen | €29,000 | 2013-04-23 |
| Lannet, Killanny, Carrickmacross | €198,000 | 2017-11-02 |
| Larach, Castleblaney, Monaghan | €94,000 | 2018-10-05 |
| Laragh Village, Castleblayney, Co Monaghan | €118,000 | 2018-12-11 |
| Laragh Village, Castleblayney, Monaghan | €310,000 | 2021-02-12 |
| Laragh, Ballybay, Co Monaghan | €150,000 | 2019-04-16 |
| Laragh, Ballyboy, County Monaghan | €80,000 | 2021-11-23 |
| Laragh, Carrickmacross, Co Monaghan | €125,000 | 2023-12-20 |
| Laragh, Castleblaney, Monaghan | €103,000 | 2015-01-22 |
| Laragh, Lisgall, Carrickmacross | €90,000 | 2014-06-23 |
| Latinalbany, Carrickmacross | €135,000 | 2010-08-31 |
| Latinalbany, Carrickmacross, Monaghan | €120,000 | 2018-02-13 |
| Latlorcan, Monaghan, Monaghan | €320,000 | 2024-04-12 |
| Latlurcan House, Latlurcan, Monaghan | €340,000 | 2021-03-19 |
| Latlurcan, Dublin Road, Monaghan | €290,000 | 2022-09-29 |
| Latlurcan, Monaghan | €210,000 | 2021-03-31 |
| Latlurkan, Monaghan | €290,000 | 2014-02-06 |
| Lattanalbiney, Carrickmacross, Co Monaghan | €390,000 | 2022-04-08 |
| Lattinalbany, Carrickmacross, Co Monaghan | €100,000 | 2014-12-12 |
| Latton, Castleblaney | €90,000 | 2010-06-29 |
| Latton, Castleblaney, Co. Monaghan | €26,000 | 2014-11-21 |
| Latton, Castleblayney, Monaghan | €310,000 | 2026-09-10 |
| Lattycrum, Loughmourne, Castleblayney | €55,000 | 2021-05-05 |
| Lattycrussen, Scotshouse, Clones | €60,000 | 2024-08-22 |
| Lattylanigan, Carrickmacross, Monaghan | €170,000 | 2021-12-03 |
| Lattylannigan, Carrickmacross, Monaghan | €537,000 | 2025-07-29 |
| Laurel Hill, Castleblayney, Monaghan | €265,000 | 2024-07-10 |
| Laurel Lodge, Castleblayney Convent, Castleblayney | €345,000 | 2026-05-11 |
| Lavagilduff, Shercock | €147,000 | 2010-11-12 |
| Laverne, Ballybay Rd, Carrickmacross | €280,000 | 2026-06-30 |
| Leacurry, Monaghan, Co Monaghan | €240,000 | 2015-07-10 |
| Leck Rd, Three Mile House, Monaghan | €180,000 | 2022-03-23 |
| Leck, Three Mile House, Monaghan | €245,000 | 2024-04-19 |
| Lecklavera, Greenans Cross, Newbliss | €120,000 | 2026-07-03 |
| Lecklevera, Newbliss, Monaghan | €310,000 | 2024-11-29 |
| Leege, Carrickmacross, Monaghan | €420,000 | 2025-03-21 |
| Legacurry, Ballybay, Co Monaghan | €90,000 | 2016-01-29 |
| Legar Hill, Clones, Co Monaghan | €225,000 | 2023-10-05 |
| Legar Hill, Cloney | €150,000 | 2012-02-14 |
| Legar Hill, Cloney, Co Monaghan | €30,000 | 2017-12-21 |
| Legarhill, Clones, Monaghan | €232,000 | 2026-05-15 |
| Legnakeely, Clones, Monaghan | €110,000 | 2014-11-06 |
| Legnakelly, Clones | €29,000 | 2012-01-25 |
| Legnakelly, Clones, Monaghan | €275,000 | 2024-05-29 |
| Leitrim, Carrickmacross, Co Monaghan | €395,000 | 2024-10-17 |
| Leitrim, Silverstream, Monaghan | €200,000 | 2023-03-27 |
| Leitrim, Tyholland, Monaghan | €325,000 | 2018-02-23 |
| Lemaculla, Ballinode, Co Monaghan | €50,000 | 2015-09-10 |
| Lenagh, Emyvale, Monaghan | €48,000 | 2015-12-21 |
| Lennaght, Knockatallon | €70,000 | 2013-04-25 |
| Lennaght, Knockatallon, County Monaghan | €100,000 | 2025-05-22 |
| Leonard's Island, Clones | €179,500 | 2011-12-05 |
| Leonsbeg, Carickmacross, Monaghan | €310,000 | 2025-09-18 |
| Leonsbeg, Carrickmacross | €105,000 | 2011-05-19 |
| Leonsgarve, Carrickmacross, Co Monaghan | €200,000 | 2023-08-28 |
| Leonsgarve, Carrickmacross, Monaghan | €270,500 | 2024-09-09 |
| Letgallen, Clones | €120,000 | 2010-11-22 |
| Letloonigan, Emyvale, Monaghan | €200,000 | 2023-12-07 |
| Lietrim, Silverstream, Monaghan | €150,000 | 2017-06-12 |
| Limaville House, Bree, Castleblaney | €157,000 | 2017-03-16 |
| Linsfort, Newtownbutler Road, Clones | €165,000 | 2010-07-19 |
| Liosdarragh, Newbliss, Monaghan | €138,000 | 2015-01-13 |
| Lis Darragh, Newbliss | €80,000 | 2016-10-26 |
| Lisanisk, Carrickmacross, County Monaghan | €100,000 | 2015-05-14 |
| Lisanisk, Carrickmacross, Monaghan | €375,000 | 2026-03-09 |
| Lisanley, Castleblaney, Monaghan | €120,000 | 2025-08-20 |
| Lisaquill, Broomfield, Castleblayney | €60,000 | 2023-03-23 |
| Lisaraw, Monaghan | €240,000 | 2024-03-11 |
| Lisarearke, Scotshouse, Monaghan | €67,000 | 2021-04-09 |
| Lisatillester, Carrickmacross, Co Monaghan | €182,000 | 2015-06-15 |
| Liscarnan, Carrickmacross, Monaghan | €425,000 | 2025-06-18 |
| Liscarnan, Coolderry, Carrickmacross | €70,000 | 2022-09-13 |
| Liscarnon, Coolderry, Carrickmacross | €170,000 | 2019-12-06 |
| Lisclougher House, Lisclougher, Castleblayney | €310,000 | 2022-12-16 |
| Lisconduff, Castleshane, Co. Monaghan | €175,000 | 2023-12-14 |
| Liscumiskey Smithboro, Monaghan | €290,000 | 2026-05-26 |
| Lisdale, Corkashybane, Carrickmacross | €440,000 | 2023-08-25 |
| Lisdarragh, Newbliss, Monaghan | €122,000 | 2018-05-31 |
| Lisdoney, Castleblayney, Monaghan | €60,000 | 2021-10-06 |
| Lisdoogan, Monaghan | €250,000 | 2025-12-18 |
| Lisdoonan, Carrickmacross, Co Monaghan | €320,000 | 2025-04-28 |
| Lisdoonan, Carrickmacross, Co Mongaghan | €140,000 | 2025-10-24 |
| Lisdoonan, Carrickmacross, Monaghan | €145,000 | 2022-09-30 |
| Lisdrumclave, Latton, Castleblayney | €225,000 | 2020-10-19 |
| Lisdrumcleve, Latton, Castleblayney | €61,000 | 2024-05-23 |
| Lisdrumdoagh, Monaghan | €241,000 | 2018-04-18 |
| Lisdrumgormley, Clontibret, Monaghan | €30,000 | 2018-02-26 |
| Lisduff, Loughmourne, Castleblayney | €20,000 | 2015-12-01 |
| Liseenan, Castleblayney, Monaghan | €45,000 | 2021-04-08 |
| Liseenan, Drumacrib, Castleblayney | €100,000 | 2025-07-22 |
| Liseggerton, 2 Churchill, Clones | €60,000 | 2015-09-21 |
| Liseggerton, Clones | €24,000 | 2012-01-23 |
| Liseggerton, Clones, Monaghan | €113,050 | 2022-03-08 |
| Liseraw, Monaghan | €90,000 | 2013-02-25 |
| Lisgall, Carrickmacross, Monaghan | €260,000 | 2026-08-19 |
| Lisgillan, Ballybay, Monaghan | €30,000 | 2023-12-19 |
| Lisgorran, Ballybay | €25,000 | 2012-11-21 |
| Lisgorran, Ballybay, Co Monaghan | €80,000 | 2019-09-27 |
| Lisgrew, Emyvale, Monaghan | €80,000 | 2023-06-15 |
| Lisheen, Scotstown, Monaghan | €110,000 | 2021-06-03 |
| Liskenna, Emyvale | €175,000 | 2015-09-29 |
| Liskenna, Emyvale, Monaghan | €178,000 | 2014-10-15 |
| Lislanley, Castleblayney | €205,000 | 2013-06-19 |
| Lislea Scotshouse, Clones, Scotshouse | €180,000 | 2022-08-31 |
| Lislea, Scotshouse, Clones | €128,000 | 2020-03-26 |
| Lisleitrim, Monaghan | €615,000 | 2025-07-21 |
| Lismagunshin Anyalla, Castleblayney, Co Monaghan | €250,000 | 2024-04-19 |
| Lisnaclea, Carrickmacross, Co Monaghan | €50,000 | 2025-10-31 |
| Lisnaclea, Carrickmacross, Monaghan | €115,000 | 2022-08-25 |
| Lisnaclea, Shantonagh, Castleblayney | €338,000 | 2022-10-27 |
| Lisnadarragh, Shercock | €78,000 | 2020-03-31 |
| Lisnadarragh, Shercock Po, Monaghan | €292,000 | 2020-09-21 |
| Lisnadarragh, Shercock, Monaghan | €100,000 | 2025-06-12 |
| Lisnafeddaly, Corduff, Carrickmacross | €50,000 | 2017-03-10 |
| Lisnafeddelly, Corduff, Carrickmacross | €425,000 | 2023-02-10 |
| Lisnafinelly, Broomfield, Castleblayney | €110,000 | 2020-01-13 |
| Lisnagallagh, Latton, Castleblayney | €92,000 | 2012-11-28 |
| Lisnagivragha, Carrickmacross, Monaghan | €260,000 | 2015-03-16 |
| Lisnagore, Newbliss, Co Monaghan | €190,000 | 2014-12-05 |
| Lisnagrieve, Castebayney, Monaghan | €185,000 | 2015-05-20 |
| Lisnagrieve, Creighanroe, Castleblaney | €277,000 | 2025-09-02 |
| Lisnagunnion, Donaghmoyne, Carrickmacross | €77,000 | 2020-12-04 |
| Lisnalee, Scotshouse | €115,000 | 2013-10-23 |
| Lisnalee, Scotshouse, Monaghan | €140,000 | 2021-04-16 |
| Lisnamack, Broomfield, Castleblayney | €250,000 | 2025-10-13 |
| Lisnamacka, Broomfield, Castleblaney | €90,000 | 2013-02-27 |
| Lisnamacka, Broomfield, Castleblayney | €194,000 | 2012-11-22 |
| Lisnamacka, Broomsfield, Carrickmacross | €232,000 | 2020-06-29 |
| Lisnamacka, Castleblayney, Co. Monaghan | €10,000 | 2013-05-07 |
| Lisnanore, Silverstream, Monaghan | €255,000 | 2015-09-25 |
| Lisnaroe Far, Clones, County Monaghan | €25,000 | 2023-09-04 |
| Lisnashannagh, Carrickmacross | €133,000 | 2010-05-27 |
| Lisnaveane, Swans Cross, Monaghan | €10,000 | 2016-01-19 |
| Lissegerton, Clones, Monaghan | €250,000 | 2021-05-14 |
| Listillan, Newbliss, Monaghan | €435,000 | 2025-07-17 |
| Listraor, Clontribret, Monaghan | €250,000 | 2016-11-18 |
| Listroar, Ballybay Post Office, Co Monaghan | €100,000 | 2014-11-27 |
| Lisua, Cootehill Road, Monaghan | €373,000 | 2023-01-25 |
| Little Lodge, Moyles, Inniskeen | €190,000 | 2020-12-21 |
| Lockhevera, Newbliss, Monaghan | €75,000 | 2019-05-31 |
| Log Cabin, Mucknoo Street | €105,000 | 2010-09-29 |
| Longfield, Carrickmacross, Monaghan | €270,000 | 2017-12-21 |
| Lossetts Lower, Carrickmacross, Monaghan | €436,380 | 2023-02-23 |
| Lossetts, Carrickmacross | €190,110 | 2012-10-05 |
| Lough View, Drumacon, Castleblayney | €140,000 | 2020-09-10 |
| Loughbrattoge, Drumacrib, Castleblaney | €250,000 | 2018-03-23 |