Thinking of extending?
THE COACH HOUSE, MAIN ROAD, EDENBRIDGE, KENT TN8 6HU
We analyse national guidelines, local authority rules, and realistic build costs to show you exactly what’s possible for your property.
It’s quick, comprehensive, and tailored to your property.
How Extend This House Helps You Plan Smarter
We analyse your local authority’s planning rules
We check your property type, boundaries, and extensions allowed under full planning rules, not just permitted development
You get a custom report in minutes
We calculate extension size potential and realistic build costs based on local averages
Know Before You Plan: What You’ll Learn
Extension
Possibilities
what’s allowed for your home
Cost
Estimates
realistic construction pricing in
your postcode
Planning
Permission Needs
can you build under
permitted rights?
Made for Homeowners Movers and Dreamers
Whether you’re planning your forever home or checking the potential of your new purchase, Extend This House gives you clarity before costly steps like hiring an architect, plannign consultant or builder.
FOR THOSE WHO ARE
- Buying a new home
- Extending for a growing family
- Maximising resale value
- Investing in property
Planning Rules,
By Council
Instantly Applied
We tailor every result to your local planning authority’s rules and regulations. That means what you see is what’s actually possible for your postcode. No planning jargon – just facts.
Frequently Asked Questions
How can I find out if I can extend my home?
Just enter your address and we’ll show you what’s possible – instantly.
Do I need planning permission for a side or rear extension?
It depends on your local rules and property type. We assess this for you.
How much does a house extension cost?
We estimate realistic costs based on current UK averages and the type of extension.
Will my local council allow an extension?
These are national rules that allow certain extensions without formal planning permission. We’ll check if they apply to you.
Is this free to use?
Yes – there’s no cost to check your home’s extension potential. If you decide you need finance as to fund your extension, we get paid to introduce you to providers.