ePrivacy and GPDR Cookie Consent by Cookie Consent 5 reasons why homeowners experience budget disaster

5 reasons why homeowners experience budget disaster

4 min read
Oct '25 • by Heather

Quick summary

Homeowners should properly budget at least 10% of their construction costs, which can range from a few thousand to tens of thousands of pounds depending on project size, to avoid financial disaster. Failing to include all stages like materials, contractor fees, and contingency often leads to overspending, delayed projects, or even bankruptcy, especially if unexpected costs arise.

If you’ve ever watched a show about home extension/renovation, you’ll no doubt of seen an episode where the family experience a budget meltdown. Costs have racked up, bills can’t be paid, the bank is refusing to help. All this makes for great television but its definitely not something you want for your own project.

To keep your project in the black, heed our advice and avoid these 5 budgeting mistakes…

Budget, budget, budget

Easily the biggest mistake a homeowner can make is not properly costing their project, leaving their funds to fall short during the build. To get a full idea of the costs involved, you’ll need to calculate the sum of all these different stages…

  • Surveying
  • Planning
  • Architectural design
  • Building regulations
  • Party wall matters, if applicable
  • VAT
  • Warranty
  • Materials
  • Contractor fees
  • Interior fittings, such as bathroom and kitchen
  • Plus, contingency

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