A seemingly impossible to build on section high above Queenstown is the location for Hans and Suzy Raetz’s “fun” project – a modular home constructed in Cromwell.

A rambunctious retired bricklayer builds one final house, for himself and his ever-patient wife on their farm near Whanganui.

A Hauraki Gulf island with an illustrious history looks to be an idyllic family retreat but building there proves a logistical nightmare.

A Central Otago vineyard is the breath-taking site for a multi-generational home bringing an extended family back together with the matriarch's own journey front of mind.

An environmentally-committed young couple in Christchurch buck convention by going back to the future with a centuries-old building material.

A concrete, steel and glass citadel above a popular Auckland beach combines austere functionality with luxury living.

In a prominent position in one of New Zealand’s most well-known beach-side communities, an Auckland couple plan a holiday home work of art.

A “forever” home amongst the vines in Martinborough wine country, with a black and white combination of Yakisugi timber and Oamaru Stone, tests the limits of an enterprising couple’s resources.

A couple with peaceful retirement in mind, plan a rustic retreat in North Canterbury inspired by a Stealth Bomber fighter.

An old tennis court in Paraparaumu is set to become a couple's new family home but the project lobs up a series of backhanders.

In the Western Bay of Plenty, a Modernist-inspired house with its own art gallery is the brainchild of a cement industry veteran who came to architecture later in life.

One of Grand Designs' most compelling builds, in which concretologist Ross risks life and limb to create a towering home for his family on the cliffs of Pt Chevalier.

The dream of a sustainable rammed earth house at Waikanae risks crumbling in the face of building delays and steadily rising costs.

In Featherston, Swedish architect Josefine Watterson tackles the challenge of creating a Passive House for her young family in pursuit of both a more sustainable lifestyle.

A well-resourced couple who fall in love with a rundown Central Otago “castle” find restoring a heritage building is anything but romantic.

In North Canterbury Phil Metaxas takes on the ambitious task of completing another man's dream - that of a post-modernist castle.

Mahuia and Mindy are preparing to be the first-time parents and want to build a family home that will double as a recording studio and a rooftop performance space. In this episode we take you back to the home doubling as a recording studio as Mahuia and Mindy try to find harmony between an inspirational music space and a place to raise their family.

Plans for an elegant “empty nest” home on Waiheke Island are swamped by a sea of mud and a tsunami of rising construction costs.

In the Waitaki Valley, Michael and Olivia Pavelitch discover they have their work cut out for them when they embark on breathing life into an historic rabbiters' cottage.

On a steep site in the wilds of Mahurangi, just north of Auckland, architect Felicity Brenchly is prepared to do whatever it takes to get their family home built.

Auckland couple Bridget and Steve Varney take on the challenge of converting Farmers' grand tea rooms built in 1930 into a New York style loft.

Eternal globetrotter Tessa Kingsbury's dream is to convert an old Dunedin Sunday school into her forever home, but it comes with a twist - she's incorporating a glasshouse into the heart of it.

A cherished family holiday home at Lake Ōhau is rebuilt after destruction and near-death experience.

Mark Ahearn and his Australian restaurateur wife Liz are taking time out from their hectic lives in Perth to build a legacy family holiday home in Abel Tasman.

A site with a river running through it would put most people off. But not Harlem and Nicola who attempt to build a glass-house on a bridge over the water.

Mahuia and Mindy are preparing to be first-time parents and want to build a family home that will double as a recording studio and a rooftop performance space.

Two psychologists undergo their own stress tests building a Mountain Modern home overlooking Otago Harbour.

Building with shipping containers seems like a creative way to create a home, but construction falling a year behind is only the start of this Christchurch family's build problems.

Kim Powell and Boon Yap scour Northland for the perfect spot to build a Feng Shui home. It's a rollercoaster ride.

Chris meets builder Steve Sygrove, who's planning to build and ornate and colourful American Gothic home in the Titirangi bush. Fifth generation builder Steve Sygrove and his wife, Chrissy, have a passion for things pretty, floral and pink. Their unique build in the Titirangi bush near Auckland is a handcrafted American Gothic style house complete with ornate detailing like a Juliette balcony, spandrels, a horseshow window, lacework valences, and interior walls made of fabric. Steve rallies against the bureaucracy that is stifling the creativity in his craft and expects this grand dame of a building will be his swansong.

A young Auckland couple borrow a fortune to build their first home - and along the way face delays, budget blow-outs, and becoming new parents.

Aaron and Christine Green create an unconventional, curvaceous creation in Cass Bay. It's as much of an artwork as it is a house, but at what cost?

Ric and Boio turn a tree house childhood dream into reality. But building in a pine forest where trees frequently blow over in winter storms complicates things.

After years of living apart with their separate children, Mike and Catherine are finally building an extraordinary straw bale together on top of a rocky outcrop in central Otego. Between them, Mike and Cathy have seven children from their previous marriages. With the last child finally moved out of home, the couple are going to build a Grand Design in which they will live alone together for the first time. They will be calling on Catherine's skills as one of the few female joiners in the country and Mike's talents as an inventor to build a unique straw bale and hemp house on an exposed rocky outcrop near Wanaka.

Chris meets Scottish migrant and urbanite, Scott Lawrie, who has a dream for a new life and a radical new stainless steel home in the remote hills behind Pakiri. Sydney-based writer Scott Lawrie's plans for his new life in New Zealand are encapsulated in a sculptural steel house he is building on a remote rural hillside behind Pakiri beach. Scott has an unrelenting refusal to compromise on his "legacy", but a budget can only be stretched so far. Will Scott realize his extraordinary dream?

Cathy and Vince strive to create a massive Italian style villa with petanque court and heated pool. But their budget takes on a life of its own.

New Plymouth couple Greg and Gayle build one of the first hemp homes in NZ, and spend thousands shielding themselves against what they believe are the ill effects of electromagnetic radiation.

Kelly wants to recreate an ornate historic homestead in Helensville - just like one she fell in love with as a child. And she's not letting her six kids hold her back.

Ski enthusiast Ash dreams of building a traditional European Log Cabin at the base of Mount Ruapehu. But will his daughter's input compromise his dream?

Ex cops Sumita and Cameron Dale want to build a lighthouse with virtually no money. Will they pull it off? And what will the neighbours say?

Steve Wilson and Wendy Grell move from Auckland to the Northland beachside where they plan to build an architectural marvel of corten steel in an unassuming seaside community.

The series finale sees Marty import two old American barns from New York valley, which are raised by heritage builders and merged with a design for a modern home. Timber merchant Marty Verry and his Venezuelan wife Morella have imported two historic New York barn frames that could be considered the oldest buildings in New Zealand. With plans to assemble the barn on the couples' rural site on the outskirts of Auckland, they intend them to become part of a modernist mansion acting as a tribute to the different timber Marty loves. But will the new homes honour the history they are built on or is this Grand Design set to take on a life of its own?

George and Yvonne are leaving Auckland to retire in Nelson. They've chosen a difficult site over a tidal estuary and George wants to paint the entire house black - inside and out.

Creating a 50-metre long castle wall is just the first of many uphill battles a brave family faces as they tackle the gargantuan task of creating a Medieval Castle in north Canterbury.

Chris meets Gus and Sarah whose solution to spiraling house prices is to make their first home an Earthship - an off-the-grid house made of recycled rubbish, earthen bricks and clay. An Earthship is a non-traditional home built using recycled materials such as bottles and tyres, and even mussel shells for insulation. Young Coromandel couple Gus and Sarah Anning decided to step outside the norm with their Grand Design when they realized they couldn't afford a traditional home. Enlisting the help of community volunteers, both here and overseas and using unique building techniques originally designed for the desert in California, it's not certain how this Grand Design will fare in Coromandel's temperamental climate.

Charles Webster, a man with a passion for technical engineering, and his wife Yvonne pour their energy into creating a home in the shape of a sand dune on the Coromandel Peninsula.

Carefree childhood memories are the inspiration behind 32-year-old James Davis' complex build on the Kapiti Coast.

Photographers Johannes and Jo face double trouble - a heritage restoration with the addition of an architectural statement home on the side.

Sustainability experts Karl and Amelie have a dream to build a home heated from the sun. But on a steep, windy Wellington hillside site they're challenged right from the start.

In Kerikeri, local weekend market and café owners Warrick and Judy Hyland are building the biggest house they can on a budget.