| Thower, Inver, Donegal | €48,000 | 2021-04-29 |
| Three Sisters, Gulladuff, Moville | €236,000 | 2020-08-14 |
| Three Trees House, Three Trees, Quigleys Point | €280,000 | 2024-02-29 |
| Three Trees Rd, Gortagore, Donegal | €212,750 | 2017-07-28 |
| Three Trees, Gortagore, Quigleys Point | €175,000 | 2021-01-15 |
| Three Trees, Quigley's Point | €79,295 | 2015-04-24 |
| Three Trees, Quigleys Point | €125,000 | 2012-12-09 |
| Three Trees, Quigleys Point Muff, Donegal | €60,000 | 2019-06-20 |
| Three Trees, Quigleys Point, Donegal | €195,000 | 2024-11-26 |
| Three Trees, Quigleys Point, Lifford | €200,000 | 2022-05-18 |
| Three Trees, Quigleys Point, Lifford Po | €282,500 | 2021-09-03 |
| Thrushbank, Lougheske, Donegal Town | €265,000 | 2023-07-18 |
| Ticonnail St., Donegal | €230,000 | 2011-04-08 |
| Tiernalague, Carndonagh, Lifford Po | €270,000 | 2025-01-23 |
| Tiernaleague, Carndonagh | €80,000 | 2011-11-17 |
| Tiernaleague, Carndonagh, Lifford | €30,000 | 2025-12-02 |
| Tiernasligo, Clonmany | €65,000 | 2010-08-26 |
| Tiernasligo, Clonmany, Donegal | €60,000 | 2025-02-07 |
| Tiernasligo, Clonmany, Lifford | €22,000 | 2013-12-18 |
| Tievebane, Burnfoot, Donegal | €345,000 | 2022-05-06 |
| Tievebane, Burnfoot, Lifford | €230,000 | 2017-11-16 |
| Tieveboy, Ballindrait, Lifford | €100,000 | 2024-10-17 |
| Tievedeevin, Ballinamore, Lifford | €148,000 | 2021-10-08 |
| Tieveskeelta, Killybegs, Co Donegal | €60,000 | 2021-10-26 |
| Tievickmoy, Ballybofey, Donegal | €145,000 | 2015-03-20 |
| Tigh Ban, Crockbane, Carrigart | €210,000 | 2021-11-12 |
| Tir Conaill Bar, The Diamond, Donegal Town | €60,000 | 2017-01-13 |
| Tir Conaill, Ardgillew, Ballyshannon | €380,000 | 2022-12-16 |
| Tir Connail St, Ballyshannon, Donegal | €23,333 | 2022-06-16 |
| Tir Na Nog, Carrownaffe, Moville | €150,000 | 2017-05-12 |
| Tir Na Nog, Croagh Cross, Portsalon | €190,000 | 2015-02-25 |
| Tir Na Nog, Glackmore, Quigley's Point | €236,000 | 2021-07-01 |
| Tir Na Nog, Muntermellon, Dunfanaghy | €410,000 | 2023-05-31 |
| Tiragus, Trentagh, Letterkenny | €115,000 | 2015-02-25 |
| Tirargus Gartan, Letterkenny, Donegal | €155,000 | 2018-10-12 |
| Tirargus, Churchill | €40,000 | 2013-01-07 |
| Tirargus, Trentagh, Letterkenny | €141,000 | 2014-12-22 |
| Tircallen, Stranorlar, County Donegal | €40,000 | 2018-07-24 |
| Tircallen, Stranorlar, Lifford Post Office | €160,000 | 2025-12-08 |
| Tircan House, Kill, Dunfanaghy | €365,000 | 2021-10-26 |
| Tirchonaill St, Donegal, Donegal | €207,000 | 2021-10-01 |
| Tirconail St, Donegal, Donegal | €150,000 | 2025-12-19 |
| Tirconaill House, Shore Rd, Ballyliffin | €190,000 | 2022-12-06 |
| Tirconnail Street, Ballyshannon, County Donegal | €135,000 | 2022-07-05 |
| Tirconnaill St, Donegal Town, Donegal | €150,000 | 2026-04-21 |
| Tirconnell Street, Ballyshannon | €197,000 | 2010-01-08 |
| Tirconnil St, Donegal Town, Donegal | €110,000 | 2025-02-28 |
| Tirhillion, Termon, Letterkenny | €72,000 | 2025-02-24 |
| Tirhomen, Milford, Donegal | €40,000 | 2015-03-25 |
| Tirhomin, Milford | €30,000 | 2011-04-14 |
| Tirhomin, Milford, Co. Donegal | €40,000 | 2024-03-27 |
| Tirhomin, Milford, Donegal | €100,000 | 2022-07-06 |
| Tirhomin, Milford, Letterkenny | €100,000 | 2022-07-13 |
| Tirk, Ballymagan, Buncrana | €85,000 | 2018-08-03 |
| Tirkillen, Termon, Letterkenny | €220,000 | 2011-09-26 |
| Tirlaughan, Carrigart | €200,000 | 2011-09-07 |
| Tirlaughan, Carrigart, Co Donegal | €45,000 | 2023-03-27 |
| Tirlaughan, Carrigart, County Donegal | €70,000 | 2017-02-06 |
| Tirlaughan, Carrigart, Donegal | €80,000 | 2019-11-22 |
| Tirlaughan, Carrigart, Letterkenny | €180,000 | 2014-11-17 |
| Tirmacool, Buncranna, County Donegal | €49,500 | 2018-06-13 |
| Tironeill, Ballindrait, Lifford | €50,000 | 2026-05-14 |
| Tiryone, Moville | €53,984 | 2010-11-24 |
| Tiryone, Moville, Donegal | €68,000 | 2019-08-02 |
| Tivockmoy, Stranorlar, County Donegal | €85,000 | 2024-06-06 |
| Tivockmoy, Stranorlor, County Donegal | €80,000 | 2023-07-07 |
| Toame Cottage, Toame, Glen | €159,250 | 2019-01-29 |
| Toame Glen, Carrigart, Letterkenny | €104,000 | 2025-04-23 |
| Tober, Ballyshannon | €110,000 | 2015-10-21 |
| Tober, Ballyshannon, County Donegal | €295,000 | 2022-11-07 |
| Tober, Ballyshannon, Donegal | €300,000 | 2024-04-04 |
| Tober, Cashelard, Ballyshannon | €75,000 | 2017-01-20 |
| Tober, Cavangarden, Ballinshannon | €34,250 | 2015-06-18 |
| Toberkeen, Dungloe | €84,000 | 2015-11-18 |
| Tobernahoorey, Ballintra, Donegal | €155,075 | 2024-11-13 |
| Tonagh, Carrigans | €110,000 | 2015-09-23 |
| Tonagh, Rushfield Rd, Carrigans | €160,000 | 2024-06-14 |
| Tonbane Glebe, Kindrum, Letterkenny | €147,000 | 2022-06-16 |
| Tonbane, Glebe, Kindrum | €320,000 | 2026-07-07 |
| Tonbane, Kindrum, Fanad | €85,000 | 2024-06-27 |
| Tonbane, Rindrum Po, Fanad | €20,000 | 2014-01-09 |
| Tonduff, Linsfort, Buncrana | €200,000 | 2020-10-21 |
| Tonduff, Linsfort, Donegal | €71,000 | 2019-08-16 |
| Tonduff, Magherabane, Linsfort | €225,000 | 2024-11-13 |
| Tonery, Ballymunterhiggin, Ballyshannon | €85,000 | 2012-02-10 |
| Tonery, Ballyshannon | €44,500 | 2013-11-14 |
| Tonragee, Ballyshannon, Co Donegal | €85,000 | 2016-04-15 |
| Tonragee, Rossnowlagh Road, Ballyshannon | €170,000 | 2019-12-16 |
| Tonregee, Dunkineely, Donegal | €177,000 | 2017-10-11 |
| Tonregee, Rossnowlagh Rd, Ballyshannon | €285,000 | 2023-06-21 |
| Tooban Upper, Burnfoot, Co Donegal | €161,000 | 2019-09-13 |
| Tooban Upper, Burnfoot, Donegal | €220,000 | 2019-12-20 |
| Tooban, Burnfoot | €80,000 | 2015-11-13 |
| Tooban, Burnfoot, County Donegal | €90,000 | 2024-10-10 |
| Tooban, Burnfoot, Donegal | €110,000 | 2016-06-02 |
| Tooberkeen, Dungloe, Letterkenny | €70,000 | 2020-12-02 |
| Toome Lettermacaward, Lettermacaward, Donegal | €250,000 | 2021-04-21 |
| Toome, Ballylar, Fanad | €99,000 | 2020-09-01 |
| Toome, Lettermacaward | €143,000 | 2013-09-05 |
| Toome, Lettermacaward, Co Donegal | €136,000 | 2024-11-29 |
| Toome, Lettermacaward, County Donegal | €15,000 | 2017-03-15 |
| Toome, Lettermacawrd | €10,000 | 2012-11-26 |
| Toome, Portsalon, Donegal | €255,000 | 2021-11-08 |
| Toomehouse, Kincraigy, Manorcunningham | €355,000 | 2022-10-14 |
| Top Apt, Dartry House, Station Rd | €47,500 | 2020-02-28 |
| Toragh Glen, Carrigart, Co Donegal | €125,000 | 2023-08-29 |
| Toragh Glenn, Carrigart, Letterkenny | €125,000 | 2021-09-01 |
| Toragh, Glen | €530,000 | 2011-06-17 |
| Toragh, Glen, Carrigart | €25,000 | 2025-02-26 |
| Torann Na Dtonn, Bun An Inver, Brinaleck | €75,000 | 2020-01-30 |
| Tornabratilly, Clonmany, Co. Donegal | €175,000 | 2020-12-18 |
| Tornabratley, Ballyliffin, Clonmany | €475,000 | 2019-02-25 |
| Torneratley, Clonmany, Co Donegal | €60,000 | 2019-05-30 |
| Tory Island, County Donegal | €29,500 | 2021-04-28 |
| Tory Island, Letterkenny | €35,000 | 2011-10-12 |
| Tory View House, Upper Baltoney, Gorthahork | €80,000 | 2022-09-08 |
| Tower, Pettigo, Donegal | €94,500 | 2017-12-07 |
| Town View, Ballybofey | €150,000 | 2010-12-22 |
| Townagorm, Barnesmore, Co Donegal | €240,000 | 2022-07-21 |
| Townagorm, Barnesmore, Donegal | €150,000 | 2017-08-29 |
| Townasligo, Bruckless, Co Donegal | €265,000 | 2022-08-02 |
| Townasligo, Bruckless, Donegal | €300,000 | 2017-02-27 |
| Townawilly, Garvagh, Loch Eske | €430,000 | 2025-09-02 |
| Towney, Kilcar, Co Donegal | €210,000 | 2021-11-17 |
| Towney, Kilcar, Donegal | €100,000 | 2024-12-19 |
| Townparks, Ballyshannon | €153,921 | 2011-09-07 |
| Townparks, Carnowen Road, Raphoe | €88,000 | 2021-02-08 |
| Townparks, Convoy, Lifford | €180,000 | 2025-09-03 |
| Townparks, Letterkenny, Convoy | €173,000 | 2024-05-17 |
| Townparks, Lifford, Donegal | €235,000 | 2024-03-07 |
| Townparks, Raphoe, Donegal | €165,500 | 2020-10-23 |
| Tra Mara, Liss Road, Carndonagh | €160,000 | 2012-12-20 |
| Trabeg, Downings, Letterkenny | €283,000 | 2025-10-31 |
| Transallagh, St Johnston, Lifford | €179,000 | 2016-09-20 |
| Trasna Na Dtonnta, Doocashel Glebe, Ards | €259,000 | 2018-08-03 |
| Travers, East Port, Ballyshannon | €141,500 | 2026-02-10 |
| Treanboy, Convoy | €85,000 | 2011-08-22 |
| Treankeel, Breenagh, Letterkenny | €175,000 | 2018-06-15 |
| Treantaboy, Drumkeen, Co. Donegal | €75,000 | 2020-12-18 |
| Treantaghboy, Drumkeen, Co. Donegal | €55,000 | 2021-05-21 |
| Trebane, Carndonagh | €50,000 | 2013-08-19 |
| Trebracken, Quigleys Point, Co Donegal | €326,000 | 2026-09-08 |
| Trenbane, Carndonagh | €73,000 | 2013-07-29 |
| Trenbane, Carndonagh, Donegal | €180,000 | 2024-12-23 |
| Trenbane, Carndonagh, Lifford | €100,000 | 2024-06-17 |
| Trensallagh, St. Johnston | €55,000 | 2013-01-22 |
| Trentabouy, Drumkeen, Letterkenny | €350,000 | 2017-05-09 |
| Trentaboy Bridge, Drumkeen, Ballybofey | €200,000 | 2024-07-19 |
| Trentaboy Drumkeen, Ballybofey, Donegal | €475,000 | 2026-04-22 |
| Trentaboy, Drumkeen | €147,500 | 2012-06-05 |
| Trentaboy, Drumkeen, Co. Donegal | €60,000 | 2017-02-28 |
| Trentaboy, Drumkeen, Letterkenny | €250,000 | 2016-04-08 |
| Trentagh Letterkenny, Letterkenny, Donegal | €60,000 | 2024-06-11 |
| Trentagh, Letterkenny, County Donegal | €275,000 | 2022-01-19 |
| Trentagh, Letterkenny, Donegal | €135,000 | 2018-02-20 |
| Trentagh, St Johnston, Lifford | €30,000 | 2019-01-15 |
| Trentagh, St. Johnston | €50,000 | 2011-03-10 |
| Trentagh, St. Johnstons, Lifford | €35,000 | 2016-04-27 |
| Trentamucklagh, St Johnston, Donegal | €108,000 | 2022-05-04 |
| Triangle House, Ballyboyle, Donegal Town | €60,000 | 2016-06-03 |
| Trienna, Upper Main St, Donegal Town | €188,000 | 2021-11-08 |
| Trillick, Buncrana | €115,000 | 2013-09-30 |
| Trillick, Buncrana, Co Donegal | €180,000 | 2022-07-27 |
| Trimagh, Letterkenny | €400,000 | 2022-11-11 |
| Trimeragh, Letterkenny | €55,000 | 2010-09-15 |
| Trimeragh, Letterkenny, Donegal | €220,000 | 2014-09-19 |
| Trimragh, Letterkenny | €404,802 | 2025-09-04 |
| Trimragh, Letterkenny, Co Donegal | €270,000 | 2020-02-14 |
| Trimragh, Letterkenny, Donegal | €126,000 | 2023-09-07 |
| Tromaty, Lifford, Quigleys Point | €260,000 | 2022-12-07 |
| Tromaty, Quigley's Point | €111,000 | 2015-10-30 |
| Tromaty, Quigleyis Point, Lifford Po | €60,000 | 2016-03-09 |
| Tromaty, Quigleys Point | €380,000 | 2012-06-13 |
| Tromaty, Quigleys Point, Co Donegal | €145,000 | 2016-06-30 |
| Tromaty, Quigleys Point, Donegal | €168,000 | 2022-07-29 |
| Tromaty, Quigleys Point, Inishowen Donegal | €230,000 | 2022-11-29 |
| Tromaty, Quigleys Point, Lifford | €150,000 | 2016-09-20 |
| Tromaty, Three Trees, Quigleys Point | €30,000 | 2025-10-29 |
| Trostrey, Glencar Rd, Letterkenny | €150,000 | 2021-12-02 |
| Truman East, Laghey, Donegal | €245,000 | 2018-09-21 |
| Trumman East, Laghey | €45,000 | 2016-10-10 |
| Trumman West Barr, Laghey | €65,000 | 2011-11-23 |
| Trummon Easgt, Laghey, Co Donegal | €90,000 | 2017-04-14 |
| Trummon East, Laghey | €103,000 | 2015-10-20 |
| Trummon East, Laghey, Co. Donegal | €70,000 | 2025-11-11 |
| Trummon East, Laghey, Donegal | €230,000 | 2024-08-30 |
| Trummon West, Laghey, Donegal | €345,000 | 2024-04-11 |
| Trummon, Laghey | €128,348 | 2015-07-06 |
| Trummon, Laghey, Co Donegal | €200,000 | 2023-06-12 |
| Trummon, Laghey, Donegal | €52,000 | 2018-12-12 |
| Trummond West Barr, Donegal Post Office, Co. Donegal | €80,000 | 2026-07-23 |
| Trusk Ballybofey, Ballybofey, Donegal | €140,000 | 2023-03-16 |
| Trusk Rd, Ballybofey, Donegal | €130,000 | 2024-07-15 |
| Trusk Road, Ballybofey | €205,000 | 2026-04-02 |
| Trusk Road, Ballybofey, Co. Donegal | €141,500 | 2017-10-26 |
| Trusk, Ballybofey, Co Donegal | €25,000 | 2025-09-16 |
| Tubber, Carrigans, Lifford | €325,000 | 2026-01-07 |
| Tubberkeen, Dungloe, Donegal | €134,000 | 2023-02-16 |
| Tulach, Toragh, Carrigart | €291,000 | 2019-11-11 |
| Tullachmhor Upper, Gortnabrad, Carrigart | €95,000 | 2013-05-09 |