This season was the most complicated series to date with housemates starting in two separate houses - a "round house" and a "square house". Housemate Benjamin Archbold was sent in first and spent the entire first day by himself. Other housemates were progressively admitted. On Night 22, all Housemates were locked into their respective bedrooms and a construction crew spent the night merging the two houses and revealing the hidden swimming pool and kitchen that had been in between the two smaller houses. Housemates were released into their new combined house on the morning of Day 23. Later in the day, a bathroom linking the two bedrooms was revealed.
In the Square house (which was on the right of the compound) were Belinda, Jaime, Irena, Carlo and Claire with Vincent and Saxon joining later in the week. After Ben entered the Round house on Day 1, Joanne, Regina, Chrissie, Daniel, Patrick and Leah were progressively admitted over the first week.
The cameras were completely hidden for the first time in this series. Previously some cameras were visible to housemates and at times housemates were aware of the camera tracking their movements.
Late in the series saw a visit from Anouska Golebiewski who was the first to be evicted from Big Brother UK 4 series showing at the time. She was brought in for a little over a week.
The biggest star and eventual winner of Series 3 was Regina Bird. Reggie earned public admiration with her unique down-to-earth charm, strong work ethic and naivety. Chrissie and Daniel came second and third respectively.
The information was not immediately revealed by Belinda as she whispered it to Carlo and house microphones did not pick it up, however after she left the room Carlo passed the information on to the other housemates.The incident sparked a legal crisis for Endemol Southern Star and Network Ten as the identification of a minor involved in a court trial is illegal in Queensland, the state where Big Brother is produced. Within seconds of this information being revealed the live Internet feeds were cut and left blank for several hours. Users watching the feeds began discussing the incident on the official website discussion boards. Moderators began deleting these messages but could not keep up with the large amount being posted and eventually the messages boards were closed down. They were re-opened for a short period before being closed again permanently. As a result there were no official message boards during the following 2004 series. The closure of the boards led to the title "Belindagate".
The information spread out to unofficial Big Brother websites and several days later the show producers acknowledged the incident. An edited version of the nights events was shown on Big Brother Uncut, except in Queensland where it was cut entirely.
Brett Jensen, the fifteenth original housemate (a policeman) left lockdown before BB3 began. Tamara - a travel agent, the sixteenth housemate, appeared on the Launch show but did not enter the house. Both were from Queensland.
She was known for saying "Bugger".
She now works the breakfast shift at Vega 91.5 FM. She is expecting her first child with her partner of one year in December 2008.
Whens the baby?
A highly respectable member of society...
(S) refers to housemates that were in the Square House. (R) refers to housemates that were in the Round House.
| Week 2 | Week 3 | Week 4 | Week 5 | Week 6 | Week 7 | Week 8 | Week 9 | Week 10 | Week 11 | Week 12 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day 86 | ||||||||||||
| Regina (R) | Patrick Daniel | Leah Daniel | Vincent Leah | Vincent Joanne | Joanne Vincent | Joanne Daniel | No nominations | Jamie Patrick | Vincent Patrick | Daniel Patrick | No nominations | Winner |
| Chrissie (R) | Regina Daniel | Leah Ben | Leah Patrick | Ben Saxon | Claire Saxon | Regina Saxon | No nominations | Vincent Patrick | Vincent Patrick | Patrick Regina | No nominations | 2nd |
| Daniel (R) | Chrissie Ben | Ben Leah | Leah Saxon | Ben Vincent | Saxon Vincent | Joanne Patrick | No nominations | Patrick Vincent | Patrick Vincent | Patrick Regina | No nominations | Evicted Day 85 |
| Patrick (R) | Joanne Regina | Leah Chrissie | Leah Daniel | Ben Belinda | Saxon Chrissie | Saxon Chrissie | No nominations | Chrissie Jamie | Chrissie Regina | Chrissie Regina | Evicted Day 78 | |
| Vincent (S) | Carlo Belinda | Belinda Carlo | Belinda Daniel | Ben Regina | Daniel Saxon | Chrissie Regina | No nominations | Jamie Patrick | Regina Chrissie | Evicted Day 71 | ||
| Jamie | Not in the house | Exempt | No nominations | Daniel Vincent | Evicted Day 64 | |||||||
| Saxon (S) | Carlo Claire | Jaime Belinda | Belinda Daniel | Belinda Chrissie | Patrick Daniel | Daniel Regina | No nominations | Evicted Day 57 | ||||
| Kim | Not in the house | Exempt | No nominations | Evicted Day 57 | ||||||||
| Joanne (R) | Patrick Chrissie | Leah Daniel | Leah Daniel | Ben Daniel | Daniel Claire | Daniel Regina | Evicted Day 50 | |||||
| Claire (S) | Carlo Vincent | Belinda Jaime | Belinda Daniel | Belinda Ben | Daniel Saxon | Evicted Day 43 | ||||||
| Ben(R) | Patrick Regina | Daniel Chrissie | Daniel Belinda | Chrissie Belinda | Evicted Day 36 | |||||||
| Belinda (S) | Jaime Claire | Carlo Vincent | Saxon Leah | Saxon Ben | Walked Day 31 | |||||||
| Leah (R) | Patrick Daniel | Daniel Ben | Daniel Joanne | Evicted Day 29 | ||||||||
| Carlo (S) | Claire Irena | Belinda Jaime | Evicted Day 22 | |||||||||
| Jaime (S) | Vincent Claire | Carlo Belinda | Evicted Day 19 | |||||||||
| Irena (S) | Carlo Claire | Evicted Day 15 | ||||||||||
| Twists | See Note 1 | See Note 2 | None | None | None | None | None | None | None | None | None | None |
| Against public vote | Belinda Ben Irena Leah Saxon | Belinda Carlo Daniel Leah | Belinda Daniel Leah | Belinda Ben Chrissie Saxon Vincent | Claire Daniel Saxon | Daniel Joanne Regina | All Housemates | Jamie Patrick Vincent | Chrissie Patrick Regina Vincent | Chrissie Daniel Patrick Regina | Regina Chrissie Daniel | Regina Chrissie |
| Evicted (% of public vote) | Irena
33% to evict | Carlo
66% to evict | Leah
41% to evict | Ben
73% to evict | Claire
60% to evict | Joanne
86% to evict | Kim
29% to evict | Jamie
50% to evict | Vincent
62% to evict | Patrick
50% to evict | Daniel
51% to evict | Chrissie
72% to evict |
| Saxon
19% to evict | Regina
28% to evict | |||||||||||
(S) Square House: Belinda, Carlo, Claire, Irena, Jaime, Saxon, Vincent
(R) Round House: Ben, Chrissie, Daniel, Joanne, Leah, Patrick, Regina The top five housemates with the highest votes were up for eviction. Belinda, Irena, and Saxon from the Square House, and Ben and Leah from the Round House. Belinda and Carlo from the Square House were up for Eviction, and Daniel and Leah from the Round House were up for Eviction. In a special round of Nominations, Ben, Claire, Jaime and Regina were not permitted to vote. The other housemates had to vote for a housemate to evict, and Jamie received the most votes.