| Keel West, Dooagh | — | 6 |
| Kennedy Gardens, Castlebar | — | 18 |
| Kilbeagh Village, Charlestown | €180,000 | 24 |
| Kilbeg, Claremorris | — | 9 |
| Kilboyne, Castlebar | — | 6 |
| Kilbride, Swinford | €193,750 | 12 |
| Kilgeever, Louisburgh | — | 5 |
| Kilkeeran, Ballinrobe | — | 5 |
| Kilkelly Road, Swinford | — | 7 |
| Kilkenny Cross, Castlebar | — | 5 |
| Killaturley, Swinford | — | 5 |
| Killeen, Swinford | — | 9 |
| Killybrone, Killala | — | 5 |
| Kilmore, Kilkelly | — | 10 |
| Kilmore Heights, Kilkelly | €150,000 | 12 |
| kilrush, hollymount | — | 8 |
| Kilsallagh, Westport | €395,000 | 14 |
| Kinaffe, Swinford | — | 10 |
| Kings Hill, Westport | €318,250 | 16 |
| Knights Park, Castlebar | — | 6 |
| Knock Rd, Ballyhaunis | — | 6 |
| Knock Road, Claremorris | — | 12 |
| Knockaphunta, Westport Road | — | 9 |
| Knockaphunta Park, Castlebar | €257,500 | 15 |
| Knockaphunta Park, Westport Rd. | €279,500 | 15 |
| Knockatemple, Ballyvary | — | 5 |
| Knockmore, Ballina | €257,000 | 10 |
| Knocknageeha, Newport | — | 6 |
| Knocknageeha Court, Newport | — | 5 |
| Knocknakillew, Ballinrobe | — | 5 |
| Knocknalyre, Ballina | €250,000 | 18 |
| Knocknalyre, Sligo Road | €222,500 | 27 |
| Knockranny, Westport | — | 5 |
| Knockranny Village, Westport | — | 5 |
| Knockrooskey, Westport | — | 5 |
| Knocks, Killasser | — | 5 |
| Knockthomas, Castlebar | — | 9 |
| KnockThomas Drive, Castlebar | — | 8 |
| Knox Street, Ballyhaunis | €82,500 | 18 |
| The Kiln, James St | — | 6 |
| The Kiln Apts, James St | — | 7 |