Head of House

 is an immunity title given to the housemate who wins the Immunity Competition. It was first introduced in Big Brother Australia 5, based on the American Head of Household power play. Since then, it became an major element in the Australian series. The title was eventually adapted by Pinoy Big Brother: Celebrity Edition 2 in 2007, then in Big Brother 9 (UK) in 2008.

Being the Head of House
The title "Head of House" will only be achieved once the housemate wins the weekly Immunity Competition. When a housemate becomes Head of House, he/she will be immune from the upcoming nominations and eviction of the current week. Aside from immunity, they will also gain privileges which varies in different countries. The title will only be effective for one week, they will have to compete in the weekly immunity competition again to remain as the Head of House for the following week.

Big Brother Australia
The winner of the week's Friday Night Live will automatically become the Head Of The House and will be rewarded with the following privileges:


 * The winning housemate will gain access to the Rewards Room, a luxurious private room in the house filled with various amenities such as movies and a private pool.
 * The winning housemate could take one fellow Housemate into the Strategy Room.
 * The winning housemate could nominate a fellow Housemate with points doubled, which means if he gave 3 points to a housemate, it could become 6 points.
 * The winning housemate will have the power to change the set of nominees. It means the Head of House could replace a supposed nominee with another housemate if ever they want to. The HOH's decision will remain confidential between himself, Big Brother and the viewers.
 * In all seasons except Big Brother Australia 5, other additional prizes were given to the winning housemate.

The Head of House title didn't fully return until Big Brother Australia 11 but the privileges were present on Big Brother Australia 9 and Big Brother Australia 10.

Although the title was not present, the housemate must win the weekly immunity competitions, Captain's Challenges in Big Brother Australia 9 and Big Brother Showdown in Big Brother Australia 10 in order to get the privileges such as immunity. Aside from immunity, they will also gain some privileges:


 * The winning housemate will gain one-day access to the Presidential Suite. It's the refurbished Rewards Room, where they could unwind away from the housemates. Filled with amenities, they could spend the whole time there with a fellow housemate. In Big Brother Australia 9, the Presidential Suite was called Captain's Quarters.
 * The winning housemate will gain the "Nominations Superpower", the power to change the set of nominees. Each week, Big Brother will give the Head of House a superpower to change the set of nominees, it's up to the housemate's decision whether he/she will use the superpower.

In Big Brother Australia 11, it was the time that the Head of House title came in use once again. On the first two weeks of the series, it was called Heads of House as the housemates were competing in pairs, it wasn't until Week 3 that only one housemate will become Head of House. This season's Head of House were much more different than the previous seasons as they were given strategic gameplay advantages called "Power Play", a twist similar to Big Brother: Power Trip's "Power Trip" twist.

Also, unlike the previous seasons, the housemates become Head of House through the Australian public. Each week, the public voted for which of the housemates they wanted to give the title and the "Power Play". The first week's Heads of House was given to the first pair of housemates who entered the Big Brother House. If they were chosen by the public, they will be immune from the nominations and they will gain access to the Power Room, where Big Brother will present them various power plays, notable among was a cash prize.

Pinoy Big Brother
The title didn't came into use until Pinoy Big Brother: Celebrity Edition 2 but the immunity competition and some privileges were present since Pinoy Big Brother 2.

In Pinoy Big Brother: Celebrity Edition 2, the title was named as "Head of Household". Despite being named after the American version, the power was still patterned after the original Australian version. Each week, the Celebrity Housemates compete in the HOH Competitions. When they win, they will gain immunity and an access to the HOH Bathroom, the refurbished shower room from the previous season. It became solely reserved for the HOH this season. Aside from that, the HOH will also be responsible for the week's shopping budget.

The title "Head of Household" returned in Pinoy Big Brother: Unlimited, but it only had immunity as a privilege.

Big Brother UK
The Head of House title first appeared on the British series on Big Brother 9.

The Head of House is responsible for doing the shopping list and deciding who does what in the shopping task. The Head of House is immune from being nominated for the week they hold the title, but they can still nominate others. The Head of House does not participate in any of the weekly shopping tasks, but supervises instead. Once a housemate has been Head of House they could not stand a second time, but could compete to stay in heaven. After the divide was removed, only eligible housemates competed to become Head of House, except for Week 12 when all housemates were eligible. On Day 88 all previous Heads of House joined Mohamed Mohamed in becoming Head of House for one day, putting an end to the role of Head of House.

It appeared once in the following year during Celebrity Big Brother 6 as a twist.