| Cappagh, Mohill | — | 6 |
| Carbery Coast, Tullaghan | €220,000 | 12 |
| Carbry Coast, Tullaghan | — | 10 |
| Carraig Ard, Lisnagot | — | 5 |
| Carraig Breac, Drumshanbo | — | 9 |
| Carrick View, Carrick on Shannon | — | 5 |
| Carrickavoher, Aughavas | — | 7 |
| Carrickfad, Fivemilebourne | — | 8 |
| Carricknabrack, Drumshanbo | — | 5 |
| Carrowcrin, Dromahair | — | 5 |
| Castle St, Manorhamilton | €77,000 | 14 |
| Castlefield, Stonebridge | €171,000 | 17 |
| Cattan, Mohill | — | 6 |
| Ceis Lawns, Keshcarrigan | €110,000 | 10 |
| Central Park, Carrick On Shannon | €170,000 | 11 |
| Church Manor, Carrigallen | €177,500 | 36 |
| Church St, Ballinamore | — | 6 |
| Churchfield, Dromahair | — | 9 |
| Circular Rd, Carrick On Shannon | — | 5 |
| Clements Court, Lough Rynn | — | 7 |
| Clements Court, Louth Rinn | — | 5 |
| Clements Court, Louth Rynn | — | 8 |
| Clooncorick, Carrigallen | — | 5 |
| Clooneen Park, Manorhamilton | €200,000 | 24 |
| Cloonmorris, Bornacoola | — | 5 |
| Cloonturk, Dromod | €205,500 | 7 |
| Clos Na Coiste, Dromod | — | 5 |
| Cluain Alainn, Carrigallen | €186,000 | 29 |
| Cluain Ard, Carrick On Shannon | — | 8 |
| Cluain Ard, Lisnagat | — | 5 |
| Cluain Bui, Carrick On Shannon | — | 5 |
| Cluain Locha, Drumshanbo | — | 5 |
| Cluain Oir, Liscarra | — | 9 |
| Cluain Oir, Manorhamilton | — | 10 |
| Cluain Si, Carrick On Shannon | €202,500 | 14 |
| Cluain Si, Hartley | €206,000 | 7 |
| Cnoc an Iuir, Drumshanbo | €195,000 | 12 |
| Cnoc An Luir, Drumshambo | — | 13 |
| Cnoc An Luir, Drumshanbo | — | 5 |
| Cnoc Beag, Carrick On Shannon | — | 5 |
| Cois Abhainn, Leitrim Village | — | 14 |
| Cois Locha, Calloughs | — | 7 |
| Cois Locha, Carrigallen | €200,000 | 10 |
| Cois na hAbhainn, Tullaghan | — | 8 |
| convent rd, Ballinamore | — | 7 |
| Cornacloy, Glenfarne | — | 5 |
| Corraneary, Aughavas | — | 5 |
| Corry, Drumkeerin | — | 7 |
| Corryard Wood, Drumshambo | — | 5 |
| Corryard Wood, Drumshanbo | — | 7 |
| Courthouse View, Landmark Court | — | 7 |
| Crannog, Keshcarrigan | €145,000 | 14 |
| Creamery Road, Manorhamilton | €142,000 | 30 |
| Crofton Court, Lough Rynn | — | 8 |
| Crofton Court, Louth Rinn | €190,000 | 9 |
| Croi Na Carraig, Keshcarrigan | — | 5 |
| Cuan Eislinne, Dromod | — | 5 |
| Curraun, Mohill | — | 5 |
| The County Apartments, Bridge St | €93,500 | 10 |
| The County Apts, Carrick On Shannon | — | 7 |
| The Crescent, Priors Point | €330,397 | 18 |