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Home Extensions

A well-designed extension doesn't just give you more space - it transforms the way you live in your home. Whether you're looking to open up your ground floor with a rear extension, create a stunning kitchen-dining space, add a side return, or build above with a first-floor addition, Crossfield Development delivers extensions that feel like they've always been part of your home.

We've completed extensions of every size and complexity across Cheshire East, Trafford, and Greater Manchester - from modest utility additions to full-scale wraparound extensions that completely redefine a property. In every case, our focus is the same: exceptional quality, clean execution, and a finish that makes your neighbours notice.

Why choose Crossfield for your home extension?

Seamless integration with your existing property

An extension that looks like an afterthought is worse than no extension at all. We spend time understanding your home's character and design the extension to complement and enhance it - matching materials, proportions, and detailing so the join between old and new is invisible.

Minimal disruption, maximum efficiency

We know you're living in your home while we're working on it. Our team plans each phase carefully to reduce the impact on your daily life, protect the interior of your property, and complete each stage as efficiently as possible without cutting corners.

Fixed costs, clear contracts

You'll know exactly what your extension costs before we start. Our proposals are detailed and transparent - no vague estimates or hidden extras appearing partway through. If anything changes, we discuss it with you before proceeding.

Full project management in-house

We coordinate every trade, every material, and every inspection. You have one point of contact throughout and don't have to deal with the stress of managing multiple contractors yourself.

A track record of value creation

A well-executed extension by Crossfield typically adds significantly more value to a property than the cost of the build. Our completed extensions have helped homeowners across Cheshire unlock substantial additional equity in their homes.

How your extension project works

  • Consultation and design brief

    We visit your home to understand your requirements, assess the existing structure, and discuss design options. We'll give you honest guidance on what's achievable within your budget and flag anything that might affect feasibility.

  • Design and planning

    We work with architects to develop detailed drawings. Depending on the size and location of your extension, permitted development rights may apply — or a full planning application may be required. We advise you on which applies and support the process throughout.

  • Proposal and agreement

    Once design is confirmed, we produce a detailed cost plan and programme. We agree everything in writing before work begins - materials, specification, timeline, and payment schedule.

  • Groundworks and structure

    We start with foundations and structural work, ensuring everything is built to building regulations and structural engineering requirements. This stage is critical and we don't rush it.

  • Weathertight and first fix

    The roof, external walls, windows, and doors go in, bringing the extension to a weathertight shell. Internal first-fix work follows - electrics, plumbing, and insulation - carried out by our skilled tradespeople.

  • Plastering and second fix

    Plastering, second-fix electrics and plumbing, joinery, and internal finishes are completed to a high standard, ready for decoration and fit-out.

  • Finishing and handover

    Flooring, kitchen, bathroom, tiling, painting, and external finishes are completed. We carry out a thorough snagging process and walk through the finished extension with you before sign-off.

Our work speaks for itself

Matt is an amazing builder with an amazing attitude. He never ever says “it can’t be done.” He will give it his best and will try to find a way to give you your dream home. He was courteous, kind and approachable throughout our project. The Crossfield team is excellent at their craft. We stayed in our property through the project and I have a first hand experience of how much pride the team have in their work. They stick to their time line. We did not have any nasty surprises with regards additional cost."
Mr & Mrs Devlin
Self-Build Client | New Build — Hall Grove, Macclesfield | Macclesfield, Cheshire

See the results for yourself

Explore completed projects from our portfolio - including location, project scope, and the outcomes we delivered.

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Frequently asked questions about Home Extensions

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  • Do I need planning permission for my home extension?

    Many home extensions fall within permitted development rights, meaning you don’t need a full planning application. The rules depend on the size, position, and type of extension, as well as whether your property is in a conservation area or is a listed building. We advise you on this at the initial consultation stage and work with your architect to ensure you’re taking the right route.

  • How long does a home extension take to build?

    A typical single-storey rear extension takes between 10 and 16 weeks from start on site to handover, depending on complexity. First-floor or wraparound extensions may take longer. We provide a detailed programme in our proposal so you know what to expect at every stage.

  • Can you match the existing brickwork, tiles, or render on my home?

    Matching existing materials is one of the most important aspects of a well-executed extension, and it’s something we take seriously. We source reclaimed bricks, matching roof tiles, and compatible render systems to ensure the extension sits naturally with the original property. We show you samples for approval before ordering.

  • Do we need to move out while the extension is being built?

    In most cases, no. We plan the build sequence carefully to maintain access to your kitchen and living areas for as long as possible, and we protect internal spaces from dust and disruption. There may be a brief period of more significant disruption when the rear wall is opened up, but we manage this carefully and always discuss it with you in advance.

  • What happens if we discover unexpected issues during the build, such as poor foundations or concealed drainage?

    Occasionally, groundworks reveal conditions that weren’t visible during initial assessment – this is a normal part of construction, particularly with older properties. We communicate any issues immediately, explain the implications honestly, and agree any necessary adjustments to the scope or cost before proceeding. We never continue without your knowledge and approval.

Further reading

Find more useful information on our blog - guides, case studies, and advice for homeowners and investors.
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Ready to extend your Cheshire home?

Talk to us about your extension plans - we'll give you honest advice and a clear proposal, no obligation.
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