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10 mistakes too many people make during construction

5 min read
Oct '25 • by Heather

Quick summary

The biggest mistake during construction is trusting a contractor with a too-good-to-be-true price, which often means costs are hidden or underestimated. Always get detailed quotes covering all aspects like skip hire and materials, and avoid paying more than 10% upfront. A clear payment plan tied to milestones and proper insurance are also essential to protect your budget.

If you’ve made it through the trials of planning and building regulations, it means you’re ready for the next leg of your journey: construction.

While many homeowners are eager to get their dream space built, too few know about how to get there safely.

Here’s what to look out for…

Going with the first available builder

Finding a builder with time on their hands might seem like a blessing but, in some cases, it could be a reflection of previous work. Good contractors tend to be in high demand so if you find one with nothing booked for months, make sure you're asking sensible questions.

Securing a builder before you’re ready

Speaking of timings and builders, when you sign up your contractor is important too. In an effort to get the best, some homeowners jump the gun and approach builders before planning or building regulations have been sorted.

This can be a mistake. One, because if planning is refused, your builder might not take too kindly to you pulling out. Second, a contractor can’t get a proper understanding of what work is required without the technical drawings produced during the building regulations stage. This means, whatever they quote, won’t be accurate and your budget could suffer as a result.

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