From the design of the walk-in-robe to bathroom fixtures and a stone feature fireplace, every detail speaks to luxury and quality craftmanship. But there's something undefinable; an energy, a sense that the brand new home - sitting on the highest hill in Bonner with a breathtaking view out to Telstra Tower - is built on a foundation of love.

On Saturday morning, number 17 Clancy McKenna Crescent - otherwise known as the Raize the Roof house - will be auctioned for charity. All proceeds will go to children in need; some located right here in Canberra and others in the African country of Botswana.

The house has taken a decade to build, relying exclusively on donated money, time and materials, and the generosity of people right across the capital.

It's the vision of Canberra siblings Danielle and Lincoln Dal Cortivo, who, over 10 long years, have kept the Raize the Roof vision alive - from board meetings and fundraiser balls to cupcake stalls and coordinating hundreds of volunteer tradies.

To see the house finally built was surreal, Danielle said.

"It's difficult for Linc and I to capture our deep gratitude to every person who has helped," she said.

"It absolutely is not our project - we're just so flat and clear about that. We just came up with an idea and then the Canberra community built it.

"To be part of that, and to be part of something that is truly bigger than all of us combined, is something I'll probably not experience ever again."

There were times throughout the decade-long build that the siblings wavered, Lincoln admitted, but it was "always about getting out of our own way and staying true to the big picture".

"The most difficult thing to do is to maintain enrolment and inspiration and movement over a 10 year period - and so Danielle and I had to do that for one another," he said.

"There were moments of being let down and then being excited - you get states of high elation when you secure a big donation or solve something that's been hard and then the next stage is just no after no after no.

"It was a roller coaster - to say that it went smoothly would be a lie."

The concept for Raize the Roof was born in 2008 after a harrowing scene Danielle witnessed while visiting Tanzania.

"We're driving up through this lush, green, beautiful scenery and we get to this orphanage and it's just this huge concrete structure," she recalled.

"And there are babies lined up on the floor on gym mats.

"You can't not be shaken and deeply confused by how that's happening in our world. You can't go home and do nothing."

The money raised at Saturday's auction will be split evenly between the Starlight Foundation and the SOS Children's Villages in Botswana. Starlight will use the money to support its in-hospital programs, as well as to realise as many dreams as possible for the 20 Canberra children waiting on a "wish".

In Botswana, Danielle is hoping the money will have a significant impact. She wants to establish a social enterprise to "transform what's possible for orphans well and truly into the future".

Luton Properties' Jason Roses, who has led the marketing campaign for the property and will auction the house, said the Raize the Roof vision was resonating with buyers.

He expects to see at least a couple of groups bidding on Saturday morning, with pricing sitting in the late $800,000s to early $900,000s.

"Our commitment is that we have the biggest impact we can on the kids," Danielle said.

"So if the house doesn't reach reserve, it will go on the market until we have a buyer that will pay what the house is worth.

"But the right people have always just appeared during this project - and we want the right buyer.

"It's pretty incredible what the Canberra community has created and enabled. This would have been a very different experience had we done it anywhere else."

The furniture inside 17 Clancy McKenna Crescent, donated by Ikea and used to stage the home during the sales campaign, will be auctioned on-site at 9am on Saturday, October 20. The auction of the home starts at 10am. All proceeds go to charity. To donate to the Raize the Roof project head to www.raizetheroof.org.au