| Magheraboy, Kilmovee | — | 5 |
| Main St, Ballindine | €65,000 | 13 |
| Main St, Ballinrobe | — | 8 |
| Main St, Charlestown | €85,000 | 9 |
| Main St, Foxford | — | 7 |
| Main Street, Balla | €155,000 | 16 |
| Main Street, Ballycastle | — | 12 |
| Main Street, Ballyhaunis | €90,000 | 11 |
| Main Street, Hollymount | — | 5 |
| Main Street, Kiltimagh | €117,500 | 12 |
| Main Street, Swinford | — | 6 |
| Manor Brook, Knock Rd | — | 6 |
| Manor Village, Castlebar | €165,000 | 23 |
| Manor Village, Westport Road | €215,000 | 38 |
| Manulla, Castlebar | — | 5 |
| Marian Crescent, Ballina | €150,000 | 22 |
| Marian Row, Castlebar | €176,750 | 10 |
| Market Sq, Ballina | €80,000 | 7 |
| Market Square, Charlestown | — | 5 |
| Market St, Killala | — | 7 |
| Market Street, Swinford | €25,750 | 9 |
| Maryland, Castlebar | — | 5 |
| Masons Close, Ballinrobe | — | 9 |
| Mayfield, Claremorris | €273,000 | 17 |
| Mayfield Ct, Ballinrobe | — | 5 |
| Mayfields, Claremorris | €327,000 | 27 |
| Mc Hale Road, Castlebar | — | 14 |
| McCormack Est, Lower Charles St | €137,500 | 6 |
| McCormack Estate, Castlebar | — | 8 |
| McDermott Street, Ballina | — | 7 |
| McHale Road, Castlebar | €170,250 | 37 |
| McNeela Tce, Westport | — | 5 |
| Meadow Court, Claremorris | — | 11 |
| Meadow Court, Elm Park | €147,000 | 20 |
| Meadow Park, Castlebar | — | 6 |
| Meadow Park, Westport Rd | €220,000 | 26 |
| Medlicott Street, Newport | — | 6 |
| Meelick, Killala | — | 6 |
| Michael Davitt Park, Westport | — | 6 |
| Milebush Rd, Castlebar | €110,000 | 12 |
| Mill Lodge, Foxford | — | 7 |
| Mill Lodge, Irishtown | — | 5 |
| Mill Park, Foxford | — | 6 |
| Mill St, Westport | €315,000 | 16 |
| Monamore, Lodge Road | €281,057 | 39 |
| Monamore, westport | €281,057 | 14 |
| Monastery View, Sandyhill | — | 6 |
| Moneen, Louisburgh | €350,000 | 11 |
| Monument View, Westport | — | 8 |
| Morahan, Belmullet | — | 8 |
| Morrison Terrace, Ballina | €158,000 | 14 |
| Mossgrove Village, Ballina | €210,000 | 14 |
| Mount Assumpta, Ballina | €79,500 | 21 |
| Mount Street, Claremorris | €130,000 | 12 |
| Mountain View, Castlebar | — | 5 |
| Moy Court, Ballina | — | 9 |
| Moy Heights, Ballina | €188,100 | 35 |
| Moyhastin, Westport | — | 6 |
| Moyvale Green, Sligo Road | €183,000 | 10 |
| Moyvale Lawn, Sligo Rd | — | 8 |
| Moyview, Foxford | — | 9 |
| Muckanagh, Glenisland | — | 7 |
| Mullenmore North, Crossmolina | — | 6 |
| Mullenmore Street, Crossmolina | — | 5 |
| Mulranny, Westport | €295,000 | 9 |
| Mulranny Holiday Village, Mulranny | — | 5 |
| Murrisk, Westport | — | 7 |
| The Maples, Ballyhaunis | €127,313 | 38 |
| The Maples, Hazel Hill | — | 8 |
| The Maples, Hazelhill | €136,250 | 44 |
| The Meadow, Lodge Road | €440,529 | 5 |
| The Meadow, Monamore | €439,647 | 7 |