A two-storey extension finished in white render and cedar cladding

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House extensions in Chorley & Lancashire

Create the home you’ve always wanted

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A well-designed extension can completely transform the way you live, creating the extra space your family needs while adding lasting value to your property.

At DC Carpentry & Construction, we specialise in quality house extensions across Chorley and Lancashire. Whether you’re looking to create a larger kitchen, open-plan living area, home office or additional bedrooms, we provide a fully managed service from initial consultation through to completion.

As a family-run business, we understand that extending your home is a significant investment. That’s why we focus on quality workmanship, clear communication and careful project management throughout every stage of the build.

DC Carpentry & Construction builds house extensions across Chorley and Lancashire. Single and double storey, rear and side, designed to match your house and managed by one family-run team, from planning and Building Control to the finishing touches. Free site visit and no-obligation quotation. Call 01257 543082.

A Complete Design & Build Service

We take the stress out of extending your home by managing the entire process on your behalf.

From the first site visit through to the final finishing touches, we coordinate every stage of your project to ensure everything runs smoothly and efficiently.

Our extension service includes:

Initial consultation and advice
Design and planning support
Structural engineering coordination
Building Control liaison
Groundworks and foundations
Brickwork and structural alterations
Roofing, windows and doors
Electrical and plumbing installations
Plastering and decorating preparation
Final completion and handover

With one dedicated team overseeing your project, you can be confident that every detail is carefully managed from start to finish. We can also work with your existing architect if you already have planning approval or building regulations drawings.

Extensions Tailored To Your Home

No two homes are the same, which is why every extension we build is designed around your property, lifestyle and future needs.

We regularly undertake:

Single Storey Extensions

Perfect for creating larger kitchens, dining spaces and open-plan family living areas.

Double Storey Extensions

A practical way to increase both downstairs living space and upstairs accommodation.

Rear Extensions

Transform unused garden space into beautiful, functional living areas.

Side Extensions

Make the most of unused space while enhancing the overall layout of your home.

Open-Plan Remodelling

Combining structural alterations with extensions to create bright, spacious modern living environments.

From Foundations To Finish

Building an extension involves far more than simply adding extra square footage.

Every project requires careful planning, structural consideration and attention to detail.

Our experienced team manages every stage of construction, including:

Site preparation and excavation
Foundations and drainage
Brickwork and blockwork
Structural steel installation
Roof construction
First fix services
Internal finishing works
Final quality inspections

Throughout the build, we keep you informed with regular updates so you always know how your project is progressing.

Why Choose DC Carpentry & Construction?

Family Run & Personally Managed

You’ll deal directly with Natasha and Dale throughout your project, ensuring clear communication and a personal approach from start to finish.

Quality Craftsmanship

We take pride in delivering work to the highest standards, with attention to detail at every stage of construction.

Fully Managed Projects

From planning support and Building Control through to final completion, we coordinate every aspect of the build.

Trusted Local Builder

Based in Chorley, we have built a reputation for reliability, professionalism and high-quality workmanship throughout Lancashire.

Transparent Quotations

We provide detailed quotations and honest advice, helping you make informed decisions from the outset.

Creating Spaces That Work For Modern Living

Many of our clients come to us because they’ve outgrown their existing space but don’t want the cost and disruption of moving home.

A carefully planned extension can provide:

Larger kitchen and dining areas
Open-plan family living
Home offices
Utility rooms
Additional bedrooms
Improved natural light
Better flow throughout the home
Increased property value

Whether you’re looking for a contemporary open-plan extension or something that blends seamlessly with the character of your existing property, we can help bring your vision to life.

Our project portfolio showcases the breadth of our expertise, from striking contemporary homes and bespoke extensions to sympathetic period renovations and heritage restorations. Whatever the style, we deliver exceptional craftsmanship, quality materials and meticulous attention to detail.

Let’s Discuss Your Extension Project

If you’re considering extending your home, we’d be delighted to discuss your ideas and provide expert advice.

Contact DC Carpentry & Construction today to arrange a free site visit and no-obligation quotation.

Together, we’ll create a space that enhances the way you live while adding lasting value to your home.

Arrange a free site visit

Our projects

Extensions we’ve built

The house before the remodel, with the groundworks just starting — Before

The finished rear, cedar cladding over white render with bifold doors onto a new deck — After

ExtensionsRenovationsCarpentry and staircases

A contemporary remodel, extended on three sides

Front, side and rear extensions with a full internal remodel. Build photos, stage by stage.

See the build

The 1950s house before work started, empty and boarded up — Before

The finished house, rendered and extended, with bifold doors onto the patio and garden — After

ExtensionsRenovations

From abandoned 1950s house to five-bedroom family home

Three bedrooms and one bathroom became five bedrooms and three bathrooms.

See the build

The back of the house before the kitchen extension, with work just starting — Before

The finished single-storey extension from the garden, in brick matched to the house — After

ExtensionsKitchensStructural

A single-storey kitchen extension, matched brick for brick

Brickwork matched so it looks original, opening into a bright open-plan kitchen and dining space.

See the build

See all our projects

Exceptional Craftsmanship & Project Management

Dale and Natasha at DC Carpentry & Construction completed a full home renovation for us, including a double-storey rear and side extension, and we couldn't be happier with the results. From our very first meeting, we knew they were the right team for the job.

Dale's craftsmanship and attention to detail are exceptional, while Natasha's project and budget management kept everything organised and on track. They transformed our house into the family home we'd always dreamed of, and we wouldn't hesitate to recommend them to anyone looking for a reliable, skilled and professional team.

E. Louise, Lancashire

Costs and value

Is an extension worth it?

For most families who’ve outgrown their house but love where they live, yes. You get the room you need, you stay put, and the money goes into your home rather than into moving costs.

Extending versus moving

Moving to get one more bedroom means paying for the privilege before you’ve gained anything. Stamp duty, legal fees, surveys, the estate agent and the removal van all come out of the same budget, and none of it is still there in ten years. An extension is. You also keep the things that are hard to put a price on: the school run, the neighbours, the walk to the park.

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What it does for the value of your house

Nationwide’s research, published in October 2025, found that a 10% increase in floor space adds 5% to the price of a typical house, and that a loft conversion or extension with a large double bedroom and a bathroom can add as much as 24% to a three-bedroom, one-bathroom house.

5%added by a 10% increase in floor space
24%added to a three-bedroom, one-bathroom house by a loft conversion or extension with a large double bedroom and a bathroom

Bedrooms and bathrooms are what add the most. We’ll talk you through what makes sense for your house on the site visit. Source: Nationwide House Price Index, October 2025.

Send us a few details

Tell us about your extension

Questions

Extension questions

Do I need planning permission for an extension?

Not always. Many single storey rear extensions are allowed under permitted development: up to 3 metres deep on a semi-detached or terraced house, or 4 metres on a detached house, measured from the original back wall, and no more than 4 metres high. Larger ones, up to 6 or 8 metres, can go through a prior approval process, where the council consults your neighbours for 21 days and decides within 42. Side extensions, two storey extensions and anything in a conservation area or on a flat have their own rules. We’ll tell you which route your extension needs on the site visit.

Do I need Building Regulations approval?

Yes, almost always, even when you don’t need planning permission. Building Control checks the foundations, the structure, the insulation, the drainage and the fire safety, and signs the work off at the end. We deal with them for you.

Will I need to tell my neighbours?

Sometimes. If the work involves a shared wall, or digging foundations within 3 metres of your neighbour’s building (6 metres for deeper foundations), the Party Wall etc. Act 1996 means they must be given notice. That’s two months for work to a shared wall and one month for new walls on the boundary or nearby excavation. We’ll tell you early if it applies, so it doesn’t hold up the start date.

Is it cheaper to extend than to move?

Often, yes. On a £300,000 house, a home mover pays £5,000 in stamp duty alone at the rates in force since April 2025, before solicitors, surveys, estate agent fees and removals. None of that adds a square metre to your home. An extension’s cost stays in the house. It isn’t the right answer for everyone, and if moving suits you better, we’ll be honest about it.

How much does an extension cost?

It depends on the size, the type, what’s going in it and what the ground is like, so we don’t guess on the phone. We’ll come out, have a look and give you a detailed quotation, free and with no obligation.

Can you work from my architect’s drawings?

Yes. If you already have planning approval or building regulations drawings, we can work with your existing architect.

Can I live in the house while you build?

Usually, yes. The new part is built outside first, and the messy bit comes when we open it up into the house. We’ll plan that with you so you know when it’s coming.

How long will it take?

It depends on the size and the type of extension. You’ll get a clear timeline before we start, and regular updates as it goes.

Structural walls and chimney breasts Kitchens Our projects Areas we cover

Got a project in mind?

Give us a ring for a chat, or send us a few details and we’ll come round for a free site visit. No hard sell, just honest advice about what your house could be.

Call 01257 543082 Get a free quote WhatsApp us