Grand Designs require a grand budget! 4/5 Houses come in over budget by 34%

Ever wondered how much the average person spends on their Grand Designs project? How much they go over budget? Who went over budget and under budget the most? How much they make on their property when selling after build their Grand Design? Where the most Grand Designs have been built?

Well… to celebrate Grand Designs 20th year of being on TV and all things Kevin McCloud, we have watched every episode of Grand Designs, (all Series 1-19, and yes it took me a long time), and have deconstructed all of the must-know statistics in the show.

Key highlights:

• 80% of Grand Designs projects go over budget, with 7% on budget, and 8% under budget.

• The average Grand Designs budget is £371,213, but in fact people go over budget by 34% (£124,356), spending £495,570.

• 21 properties from the show are built in London, with rural hotspots such as Devon, Wales and Cornwall attracting more than 6 Grand Designs projects since 1999.

• North/South divide exists in the show with only 23 properties being built in the south compared to over 100 in the south – alone in London, a total of £12,870,000 was spent on building the 21 Grand Designs properties.

• The most over budget property was Bram and Lisa Vis who spent £1.35 million more than planned. The most under budget property was the Floating House in Series 14 that went under budget by £100,000. (I can provide details for the other Top 5 most under/over budget properties).

• The majority of houses in the show (22) cost between £200,000-£299,999. In fact 19 houses are built between the £100,000 an £199,999 mark – showing that building your own property is certainly affordable.

• On average, a Grand Designs house goes on the market at £1.29 million – after being built. The Miniature Hollywood Mansion has the biggest ROI going on the market at £3.95 million after costing £700,000 to build.

• The average Grand Designs project takes 17 months to build – 47 houses are completed in less than a year.

Shared by: Seb Burchell – seb.burchell@mojomortgages.com

EAN Content

Content shared by this account is either news shared free by third parties or sponsored (paid for) content from third parties. Please be advised that links to third party websites are not endorsed by Estate Agent Networking - Please do your own research before committing to any third party business promoted on our website. As an Amazon Associate, I earn from qualifying purchases.

You May Also Enjoy

Home and Living

Home longevity spas tipped to become the next must-have in prime property

Longevity expert has noticed a huge influx in home spas from investors Country and Townhouse reported that wellness is expected in luxury homes Ralph Montague discusses core shifts he’s seen over the past two years Once, cinema rooms, wine cellars and home gyms were considered luxury home features. Now, the next major trend in prime…
Read More
Breaking News

Nationwide House Price Index for April 2026 – Thoughts from the Industry

House prices increased by 0.4% between March 2026 and April 2026. This was a weaker rate of monthly growth compared to the previous month (0.9%). Annual growth sat at 3% in April 2026, with this annual rate of growth increasing from 2.2% versus March 2026. The average UK house price now stands at £278,889.  …
Read More
Breaking News

House price growth remained resilient in April

UK annual house price growth picked up to 3.0% in April, from 2.2% in March House prices were up 0.4% month on month Headlines Apr-26 Mar-26 Monthly Index* 554.8 552.7 Monthly Change* 0.4% 0.9% Annual Change 3.0% 2.2% Average Price (not seasonally adjusted) £278,880 £277,186 * Seasonally adjusted figure (note that monthly % changes are…
Read More
Breaking News

Homeowners shift mortgage strategy amid economic uncertainty

Middle East conflict prompts Brits to rethink housing plans 27 per cent of homeowners report overpaying on their mortgage to get ahead of potential future interest rate rises 20 per cent of those remortgaging are looking to lock in a new rate as soon as possible in case of future volatility Barclays Mortgage data shows…
Read More
Breaking News

Today is the day your rights change: New Renters’ Rights rules now in force for tenants across England

Today marks a major change for tenants across England as the first phase of the Renters’ Rights Act 2025 comes into force, significantly strengthening rights and changing how renting works in practice. From today, the long-standing system of Section 21 ‘no-fault’ evictions ends, meaning tenants can no longer be removed without a specific legal reason.…
Read More
Home and Living

Mould Tops List of Bathroom Red Flags For Homebuyers

Mould, Space & Water Pressure: 3 Bathroom Deal-breakers Affecting House Sales This Spring   Almost 9 in 10 (88%) Brits say at least one bathroom issue would put them off making an offer on a house.   Mould (60%), lack of space (44%), and water pressure (37%) are the top three deal-breakers, with concern intensifying…
Read More