What Could Your Extension Cost? | Cutwood Joinery

Struggling for space at home and don't want to move?

Find out what your extension could cost in ⏱️ 60 seconds

Answer 6 quick questions and get an instant cost estimate, no obligation and no hard sell.

60 ⭐⭐⭐⭐⭐ Reviews | 🏠 25+ Extension Projects | 🔰 FMB Accredited | 🛡 TrustMark Approved

Free estimate  ·  No obligation  ·  No hard sell

Extensionsfrom £40,000 inc VAT
4.9 ★ GoogleRated by clients
All tradesFully managed
8 weeksPost-planning build
Cutwood Joinery extension project

Client Testimonials ⭐⭐⭐⭐⭐

Google
★★★★★

Cutwood Joinery built our rear house extension to create a larger kitchen and family space. The old layout felt cramped and disconnected from the garden. The new open plan space has completely transformed how we live in the house. Brilliant from start to finish.

Robbie Sanderson
Robbie Sanderson
Rear House Extension
Google
★★★★★

Cutwood Joinery transformed our kitchen with a beautiful extension that has completely changed how we use the house. We now have room to cook, eat and relax together as a family. The quality of the finish is outstanding and the team were tidy, professional and on time.

Mark Robertson
Mark Robertson
Kitchen Extension
Google
★★★★★

CWJ completed our two-storey extension, giving us two extra bedrooms, a new utility room and a stunning open-plan kitchen. The house now works perfectly for our family and the build quality is exceptional. Would recommend Cutwood Joinery without hesitation.

Karen McElroy
Karen McElroy
2 Storey Extension
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Are you the homeowner?

Just so we can tailor your estimate correctly

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What's driving the project?

Pick everything that applies

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What type of extension are you considering?

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How big are you thinking?

Rough is fine. Pacing it out in the garden is close enough, one long stride is about a metre.

Width, across the back of the house 6.0m
Projection, how far out into the garden 4.0m
24m² about the size of a large kitchen diner

Under 15m² is perfectly possible, but the fixed costs of an extension do not shrink much below that, so it rarely represents good value. Our estimates start at 15m².

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What investment have you set aside for this project?

This helps us tailor the right options for you

It's unlikely we could build an extension for less than £40,000

Our extensions typically start from £40,000 including VAT, so this might not be the right fit for your budget right now.

Are you sure?
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Where are you in the process?

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When are you hoping to start?

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Where should we send your estimate?

Your details stay safe with us, we never share them.

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No obligation and no hard sell. We never share your details.
By submitting, you agree we can contact you by phone, text and email about your estimate. You can opt out at any time.

Your estimate is ready

Here's your estimated extension cost

Adjust the slider to refine your estimate

Floor area
25m² estimated
Calculating...
exc VAT
exc VAT inc VAT

All estimates are indicative and act as an early guide, subject to final drawings and specification. No two extensions are identical. Extensions start from £40,000 including VAT.

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What's covered

Included

  • Windows and doors
  • All electrics
  • All plumbing
  • Plastering

Not included

  • Kitchen
  • Bathroom
  • Decorating
  • Floor finishes
  • Window dressings
  • Furnishings

Where you already know what you want, we are happy to price any of the excluded items into your estimate. Just tell us on the call.

Cutwood Joinery extension project

Client Testimonials ⭐⭐⭐⭐⭐

Google
★★★★★

Cutwood Joinery built our rear house extension to create a larger kitchen and family space. The old layout felt cramped and disconnected from the garden. The new open plan space has completely transformed how we live in the house. Brilliant from start to finish.

Robbie Sanderson
Robbie Sanderson
Rear House Extension
Google
★★★★★

Cutwood Joinery transformed our kitchen with a beautiful extension that has completely changed how we use the house. We now have room to cook, eat and relax together as a family. The quality of the finish is outstanding and the team were tidy, professional and on time.

Mark Robertson
Mark Robertson
Kitchen Extension
Google
★★★★★

CWJ completed our two-storey extension, giving us two extra bedrooms, a new utility room and a stunning open-plan kitchen. The house now works perfectly for our family and the build quality is exceptional. Would recommend Cutwood Joinery without hesitation.

Karen McElroy
Karen McElroy
2 Storey Extension

Common questions

All estimates shown are exc VAT unless you flip the toggle above. Most residential extensions are charged at the 20% standard rate.

Extension costs vary with finish level, materials, site conditions and specification. No two extensions are identical, which is why we always carry out a free site visit before issuing a firm price.

Our estimates include windows and doors, all electrics, all plumbing and plastering. They exclude kitchens, bathrooms, decorating, floor finishes, window dressings and furnishings. Where you already know what you want, we are happy to price any of those in.

Not always. Smaller extensions may fall under permitted development in Scotland, but it depends on the property, size and location. Our architectural design team will advise you at no cost.

Once planning is approved, most single storey extensions complete within 8 weeks. Larger or double storey projects take longer. We'll give you a build programme at the site visit stage.

One of our team will contact you to arrange a free site visit. We review the property, understand what you want to achieve, and come back with a detailed no-obligation estimate.