Treehouse
1 The 13-Story Treehouse (2011)
2 The 26-Story Treehouse (2014)
aka The 26-Storey Treehouse
3 The 39-Story Treehouse (2015)
4 The 52-Story Treehouse (2016)
5 The 65-Story Treehouse (2015)
6 The 78-Story Treehouse (2016)
7 The 91-Story Treehouse (2017)
Terry's Dumb Dot Story (2018)
8 The 104-Story Treehouse (2018)
9 The 117-Story Treehouse (2018)
10 The 130-Story Treehouse (2020)
11 The 143-Story Treehouse (2021)
12 The 156-Story Treehouse (2022)
13 The 169-story Treehouse (2023)
14 Who's Who and What's Where in the Treehouse (2023)
2 The 26-Story Treehouse (2014)
aka The 26-Storey Treehouse
3 The 39-Story Treehouse (2015)
4 The 52-Story Treehouse (2016)
5 The 65-Story Treehouse (2015)
6 The 78-Story Treehouse (2016)
7 The 91-Story Treehouse (2017)
Terry's Dumb Dot Story (2018)
8 The 104-Story Treehouse (2018)
9 The 117-Story Treehouse (2018)
10 The 130-Story Treehouse (2020)
11 The 143-Story Treehouse (2021)
12 The 156-Story Treehouse (2022)
13 The 169-story Treehouse (2023)
14 Who's Who and What's Where in the Treehouse (2023)
Other books
The Treehouse Fun Book (2016) (with others)
The Treehouse Diary 2020 (2019)
The Treehouse Joke Book (2019)
The Treehouse Joke Book 2 (2021)
Top-Secret Treehouse Tales (2022)
The Treehouse Diary 2020 (2019)
The Treehouse Joke Book (2019)
The Treehouse Joke Book 2 (2021)
Top-Secret Treehouse Tales (2022)
Omnibus editions
The 13-Story Treehouse Collection Set Pack (2016)
The REALLY Big Treehouse Boxed Set (2017)
The Treehouse Series Vol 1-8 (2019)
The REALLY Big Treehouse Boxed Set (2017)
The Treehouse Series Vol 1-8 (2019)