House Extension Project Estimate Calculator

Common Questions About House Extensions

How accurate is the online estimate?

Our calculator provides a rough guide based on average costs in Derby. For a precise quote, we'll need to visit your property to assess specific requirements and site conditions. You can start by filling out our online form and providing some more details

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How long does a typical house extension take to complete?

Most single-storey extensions take 10-12 weeks from start to finish. However, this can vary depending on the size and complexity of your project. We'll provide a detailed timeline during our site visit.

Do I need planning permission for my extension?

Not all extensions require planning permission, some fall under 'Permitted Development'. We advise you get any necessary planning granted first before instructing a builder.

How disruptive will the building work be?

We minimise disruption by carefully planning each stage of construction. Most clients continue living at home during the build. We maintain a clean site and communicate clearly about any temporary disruptions.

Do you handle all aspects of the build?

You can contact us at info@eleyprojects.com or call 01332 314 164. We encourage you to reach out with any inquiries. Our team is ready to assist you promptly.

How do you ensure quality standards?

We maintain high standards through:

Regular site inspections
Building control visits
Qualified tradespeople
Quality materials
Comprehensive guarantees

Derby's Trusted House Extension Specialists Since 1983

For over four decades, Eley Projects has helped Derby homeowners craft their dream space. Originally founded as A J W Eley & Son, we've since focused our expertise exclusively on house extensions, because that's what we do best. Our dedicated team has completed hundreds of successful extensions, giving families the extra space they need while staying in the homes they love.

4.9

Average Google Rating

40+

Years in the business

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On site with Eley Projects, Derby's house extension specialist builder.

See what other local Derby homeowners are saying about Eley Projects

"Really pleased with the work that Ben and Ian did on our home. They were hardworking, kept us up-to-date and coordinated the other trades."

Andrew Beattie

Google Review

"Following having several quotes for the work Ben was the only builder who suggested that we could reuse the bricks to ensure the opening matched the existing brickwork. His price was fair and reasonable and was provided in writing. Ben and Ian have done a fantastic job and I am really pleased with their work. We have already discussed the next project. I would not hesitate in recommending them to friends and family."

Nadine Taylor

Google Review

"Eley Projects did a fantastic job of our kitchen extension. They were organised and tidy throughout the build, and completed it to a very high standard in good time. The guys were friendly, approachable and trustworthy. We would absolutely recommend Eley Projects, and would use them again without a second thought."

Tom Beamish

Google Review

"From start to finish of having our garage conversion completed we were very impressed with Ben and his team. We had been let down by one builder but found Ben honest and kept us up to date throughout. The work was completed quickly and well with very little disruption."

Alison Herbert

Google Review

"Ben and his team have completed a garage conversion for us, we are really pleased with it. The work has been completed to a really high standard, Ben has a great attention to detail and it shows in the finished work. In a time where many builders will lowball prices, Ben sets a realistic expectation and you can trust that it is genuine value for money. Ben organised the other trades really well too."

Andrew Lucas

Google Review

"Their attention to detail is awesome and also when they find a problem they crack on and solve it."

Dennis Porter

Google Review

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Common Questions About House Extensions

Derby's Trusted House Extension Specialists Since 1983

See what other local Derby homeowners are saying about Eley Projects

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