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

Estate Agent Talk

How Technology is Changing the Prime Property Viewing Experience

The world of luxury real estate has always been about delivering a premium, personal experience. But in today’s rapidly evolving digital landscape, even the most traditional sectors are being reshaped by technology—and prime property viewings are no exception. From augmented reality to AI-driven virtual tours, the way buyers interact with high-end properties has changed dramatically.…
Read More
Love or Hate Rightmove
Breaking News

Average two-year fixed mortgage rate for 60% LTV now cheaper than five-year rate

The average two-year fixed mortgage rate for those with a 40% deposit (60% LTV) is now cheaper than the average five-year fixed equivalent, the first time this has happened since the mini-Budget The average two-year fixed, 60% LTV mortgage rate is now 4.18%, while the five-year equivalent is 4.19% The gap between average two-year fixed…
Read More
Overseas Property

How UK Property Investors Can Manage Exchange Rate Risk When Buying Off-Plan Overseas

Off-plan purchases are especially common in developing overseas property markets with a high proportion of international investors. In these less mature markets, a significant share of stock is sold directly by developers, making off-plan transactions a natural sales model. These opportunities appeal to international buyers because they typically require less upfront cash due to extended…
Read More
Breaking News

Foxtons Lettings Market Index – March 2025

London rental market gains momentum as new rental listings surge, Foxtons data shows   March saw a 14% increase in new rental listings across London compared to February Applicant registrations rose by 11% month-on-month in March. Year on year, demand was stable, tracking just 2% below March 2024 levels The average rent in March stood…
Read More
Breaking News

UK’s mid-market firms show improved business growth in March but economic uncertainty continues

Key findings: NatWest’s Mid-market Growth Tracker shows improved business growth in March, led by a strong service sector performance SMEs register a softer decline in output levels during March Market conditions remain challenging and we could see continued challenges in the coming months   Mid-market businesses continued to outperform the wider UK economy in March,…
Read More
Breaking News

ONS Private rent and house prices UK – April 2025

The Price Index of Private Rents (PIPR) measures private rent inflation for new and existing tenancies. The UK House Price Index measures house price inflation. Main Headlines Average UK monthly private rents increased by 7.7%, to £1,332, in the 12 months to March 2025 (provisional estimate); this annual growth rate is down from 8.1% in…
Read More