| lackagh, Portnoo | €335,000 | 10 |
| Lackenagh, Burtonport | €101,500 | 14 |
| Laganore, Portnablagh | — | 5 |
| Lawne Park, Ballyshannon | — | 6 |
| Lawnsdale, Ballybofey | €163,500 | 27 |
| Lawnsdale, Navenny | €205,000 | 12 |
| Legnahoorey, Kilmacrennan | — | 5 |
| Legnahoory, Kilmacrennan | — | 7 |
| Legnathraw, St Johnston | — | 5 |
| Leitir, Kilmacrennan | — | 7 |
| Lennon Grove, Ramelton | — | 8 |
| Lennon View, Kilmacrennan | — | 5 |
| Letter, Clonmany | €100,000 | 9 |
| Letterfad, Letterbarrow | — | 6 |
| Letterilly, Glenties | — | 7 |
| Letterkenny Town Centre, Justice Walsh Road | — | 7 |
| Lettermore, Drumkeen | — | 7 |
| Lifford Court, Lifford | — | 18 |
| Linsfort, Buncrana | — | 7 |
| Lios an Chnoic, Carnamuggagh | €286,344 | 12 |
| Lios Na Greine, Burnfoot | — | 6 |
| Lisfannon Heights, Fahan | — | 7 |
| Lisminton, Ballintra | — | 6 |
| Lisnenan Court, Letterkenny | — | 14 |
| Lisnennan Court, Letterkenny | — | 10 |
| Lisowen Avenue, Buncrana | — | 6 |
| Listillion, Letterkenny | — | 9 |
| Loch View, Buncrana | — | 5 |
| Logan Close, Ludden | €215,000 | 7 |
| Lough Castle View, Greencastle | — | 8 |
| Lough Fern Heights, Milford | — | 14 |
| Lough View Park, Ballymacarthur | — | 6 |
| Loughanure, Annagry | €104,420 | 22 |
| Lower Dore, Bunbeg | — | 5 |
| Lower Keadue, Burtonport | €93,000 | 8 |
| Lower Keeldrum, Gortahork | €120,250 | 7 |
| lower main street, letterkenny | €117,500 | 44 |
| Lower Main Street, Buncrana | — | 12 |
| Ludden, Buncrana | — | 5 |
| Lunniagh, Derrybeg | €176,000 | 16 |
| Lurgyvale Cottages, Kilmacrennan | — | 11 |
| The Lagg, Milford | — | 6 |
| The Links, Greencastle | €160,000 | 18 |
| The Links, Portnablagh | €230,000 | 8 |
| The Links, Tullan Strand Rd | — | 8 |