PHOTO: Mike and Annie Cannon-Brookes have bought the house next door to their Point Piper estate.

Tech billionaire Mike Cannon-Brookes has continued his monumental property splurge of last year, buying the house next door to his $100 million Point Piper estate.

The Atlassian co-founder and co-chief’s latest acquisition is a $12 million house that backs onto Cannon-Brookes’ 1.1-hectare Fairwater property. It had been owned by chairman of Medlab Clinical research facility Michael Hall and his wife Elizabeth Jones, owner of the Arida clothing boutique in Potts Point.

The four-bedroom house with a swimming pool on 689 square metres is set one house back from the beach.