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House Extensions in Dorchester, Dorset

We can help you make the most of your Dorset home with creative, practical and beautifully designed home extensions.

 

Whether you’re dreaming of a light-filled kitchen, an extra bedroom, or a larger living space, our team will guide you through every stage of building a house extension, from initial ideas to the final finishing touches.

 

Why choose a house extension?

 

A house extension is one of the best ways to add space and value to your property without the hassle of moving.

 

Extending your home can transform how you live, giving you the room you need for family life, entertaining, or working from home. We design every extension around your needs, making sure it blends seamlessly with your existing home and enhances your lifestyle.

 

Types of home extensions

 

There are many ways to extend your home, and we have experience with all types, including:

 

  • Single storey extensions for open-plan living or larger kitchens

  • Double storey extensions for extra bedrooms and bathrooms

  • Side, rear, and wraparound extensions to maximise your plot

  • Building extensions on houses of all ages and styles




We’ll help you choose the right approach for your property and budget, always focusing on quality, light, and flow.

 

What’s involved?

 

Building a home extension involves several key stages, including architectural planning, securing permissions, and producing detailed drawings. We’ll manage the process for you, working closely with local contractors in Dorset to ensure everything runs smoothly. Our team keeps you informed at every step, so you always know what’s happening and what to expect next.

 

Our involvement can also be tailored to both your needs and budget. This can involve simply obtaining relevant consents or we can continue to project manage the construction phase right through to completion.

House extension FAQs

 

How much does a house extension cost in Dorset?


 

Costs vary depending on size, specification, and finish. As a guide, a single storey extension in 2025 typically costs between £1,700 and £3,300 per square metre, with the average extension costing £40,000 to £80,000. Double storey extensions, premium finishes and complex builds will cost more.

 

We provide clear, upfront quotes and help you plan your budget from the start.

 

How long does it take to build a home extension?


 

Most home extensions take 3-6 months to complete, depending on the complexity and weather conditions.

 

Do I need planning permission for a house extension?

 


Some house extensions fall under permitted development, but larger or more complex projects often require planning permission. We’ll advise you on what’s needed for your home and handle all the paperwork.


What types of extensions can I build?


You can choose from single storey, double storey, side, rear, wraparound and loft or garage conversions. We’ll help you decide what works best for your property and needs.


What’s the process for building an extension on my house?


 

We start with a design consultation, create architectural drawings, manage planning and building regulations, and oversee the build to completion. Our team is with you every step of the way.


Will a home extension add value to my property?

 


A well-designed home extension can significantly increase your property value, as well as improve how you use and enjoy your space.


Are you ready to transform your home with a house extension in Dorset? We’d love to discuss your ideas with you and see how we can help you create the space you’ve always wanted.

Fisher Design Studio, The Old Warehouse

31 Durngate Street, DORCHESTER DT1 1JP

01305 261 986   admin@fisherdesign.studio

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 (Fisher Design Studio is a trading name for Fisher & Associates Ltd)                             

 © 2025 by Fisher & Associates Ltd                            Company Reg. 6964418                                                VAT Reg. 275 4284 81

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