Stay up to date with the latest improvements to Planning To Build. We regularly update our tools to provide you with the most accurate and helpful building cost estimates.
August 2025
Timeline estimates for your extension project
We've added timeline estimates to help you understand how long your extension will actually take to complete. Just like our cost estimates, these timelines adjust in real-time based on your project choices, giving you builder-level insights into the true complexity of different approaches. You'll now see realistic completion timeframes that account for all the stages from planning through construction. Read our detailed guide on extension timelines and why they matter.
July 2025
Clearer project journey on your dashboard
We've redesigned our project dashboard to better reflect how extension projects actually work. You'll now see exactly where you are in your journey and what to expect at each stage.
What's new:
- Clearer next steps that focus on discovering hidden costs before they surprise you
- Better cost breakdowns showing what's included (and what's not) in your estimate
We've also added placeholders for upcoming features we're building based on your feedback. Watch this space for tools to help you compare quotes and track your project progress.
May 2025
Regional pricing
We've introduced location based pricing adjustments to provide more accurate cost estimates based on your specific region within the UK.
Your project estimate will now automatically adjust based on construction costs in your area, giving you a more precise budget for your home extension project.
So whether you live in London, Manchester, Edinburgh, Cardiff, Belfast or any other UK location, you'll now get a better more accurate estimate to help you plan your build.
Please note: These regional prices are estimates only. If you live near a regional boundary, costs may differ from our calculation.