This is where budgets get blown.

Everyone plans for kitchens and bathrooms—but the real damage comes from hidden costs.

The Most Common Hidden Costs

1. Strip-Out Surprises

• Damp
• Rot
• Bad wiring

£1,000 – £10,000+ unexpected

2. Waste Removal

• Skips: £200 – £400 each
• Multiple skips often needed

3. Temporary Living Costs

• Rent
• Storage
• Eating out

4. “Making Good”

After major work:

• Replastering
• Decorating
• Repairs

5. Upgrades You Didn’t Plan

You’ll think:
“We might as well do this while we’re here…”

That’s where budgets spiral.

6. Professional Fees

• Architects
• Structural engineers
• Planning costs

7. Delays

Time = money:

• Extra labour
• Extended living costs

Real Insight

Most people go over budget by:
15–30%

Not because they’re careless—but because these costs aren’t obvious upfront.

Final Thoughts

Contingency should be:

• 15–25% minimum Because current UK labour/material volatility is higher.
• Assume problems will appear