The Thannerhouse District, or simply Thannerhouse, was an urban district on the planet Troithe which bordered with the , a large reservoir whose presence was clouded by towers, bridges and platforms. Around 5 ABY, the Barma Battle Group of the New Republic invaded Troithe. The residents of Thannerhouse were warned over three days that the New Republic's 61st Mobile Infantry would be passing through, with the starfighters of Alphabet Squadron as air support, but chose to remain put, contrary to the outcome from other districts. When the time came, the New Republic forces were met with resistance from Imperial Kraken-class deep lurkers. In the ensuing battle, the dam burst extensive flooding occurred.
The Thannerhouse District appeared in the 2020 novel Shadow Fall, written by Alexander Freed.
The Thannerhouse District appeared in the 2020 novel Shadow Fall, written by Alexander Freed.