Trevor and Jeanette are looking to build a very special home close to nature in which Trevor can move about easily in his wheelchair. When a 15 acre block with river frontage comes on the market, they pounce.

After a fire destroyed the much-loved homestead on Alistair and Belinda's dairy farm, they embark on a bold new project to create a comfortable home that looks like a dairy shed, complete with silos for bedrooms.

Building a big house in inner-city Melbourne is a tricky business. But architect Annalise and project manager Kim have a plan to turn their 1850s terrace into a multi-storied modern home with a triple car-stacker.

Gary and Clare left the hustle and bustle of Sydney for a more peaceful pace with plans of building a spaceship-like domed house, reminiscent of the beautiful vaulted structures seen in Europe.

Lynne and Paul have found a beautiful stretch of coastal wilderness with panoramic views over the Tasman Sea. With plans to build a huge modern home, Paul will project manage while living on site.

Retirees and childhood sweethearts Liz and Warren have taken on a hundred-acre Macadamia farm in the Byron Bay hinterland, with grand plans to build an epic five-bedroom, Mediterranean-style villa-cum-castle.

Tani and Tim have plans to build a medieval 'earth castle' on their 60 acre property. Built into the sides of a man-made dam, there are plans for a drawbridge, turret, underground tunnels and even a moat.

Architect Ben and artist Tania decide to get creative with a tiny discarded scrap of land in one of North Melbourne's grittier back lanes. Can their grand dreams materialise from their not-so-grand budget?

Bel and John are building an underground house on 25 acres at Whittlesea, Victoria. An area known for bushfires, Bel and John want to ensure their property is fire proof.

Fiona and Sal attempt to find a middle ground with their build, with Sal deciding the location and Fiona choosing the design.

Anita and Kris Martincic dreamt of living in the city, so when a 100 year old derelict building came on the market, they jumped at the chance.

After buying a block of land in Clarence, Dennis and Karen try to build a house that can withstand bushfires out of seven shipping containers.

Catherine and Mick purchase 50 acres in the rolling hills of South Australia's Fleurieu Peninsula and begin building a remarkable structure that looks more like a corrugated iron shed than a house.

For Dr Shiva Gunapu and his psychologist wife Rima, incorporating the rich colours of their Indian heritage is an essential element for their new home.

Electrician Mick takes on the challenge of a lifetime when he and artist wife Belynda decide to build their dream modernist home in the bucolic Dooralong Valley, on the NSW Central Coast.

Constructing an underground acropolis in the desert town of Coober Pedy is an ambitious undertaking, but when Paul's parents retire, he wants to build them the ultimate 'underground Greek mansion'.