The hit Channel 4 architectural show Grand Designs sees ambitious individuals build their dream family home, and this week's episode is no different. 

In the first week of the new series, Manchester couple Colin and Adele learnt the hard truths and the dos and don'ts of building their curved glass mansion.

Their decision to use cheaper overseas labour resulted in the couple's project being more expensive than they had planned out.

Meanwhile, last week saw Tunbridge Wells-based Kate and Rob replace their rundown post-war prefab home that stood the ages and lasted a lot longer than expected.

The pair lacked in confidence when it came to building so opted to commission a readymade house that was built in a factory and delivered to the site on the back of a lorry.

If you're enjoying the new series of Grand Designs and want an exclusive preview of the new houses, read the free digital edition of the September issue including some of the exciting projects you can expect to see over the coming weeks. https://t.co/ayWLvrW5q9 pic.twitter.com/4KucvNwPTO

The couple were able to build their home on a budget and even gained the title of the quickest build ever seen on Grand Designs.

Now, this week sees Bedfordshire husband and wife, John and Helen, create a "modernist pavilion".

Ex-racehorse breeder John has plans to build a hi-tech home that will promise himself and his wife, Helen, a retired vet who had a stroke in 2018, a comfortable life with an initial budget of £1.3 million.

They have plans to sell their 17th-century farmhouse and create a new wheelchair-accessible modern home on a nearby plot, they brought for £850,000

The couple wants to complete their family home with two bedrooms, three bathrooms an annexe a wildlife garden and a self-cleaning swimming pool.

And they're keeping building plans in family hands as John's son Ollie takes on the role of project manager. 

However, not everything goes to plan on Grand Designs, as the couple learn that the sale of one home and the construction of another at the same time, can be a lot harder than anticipated.

You can watch Grand Designs at 9pm tonight on Channel 4 and All 4.

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