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Extension Builders in Horwich (30)

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  • Your Choice Home Improvements Logo

    Your Choice Home Improvements

    9.77

    (529 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Call
  • Bespoke Home & Build LTD Logo

    Bespoke Home & Build LTD

    10.00

    (51 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Agricultural Building
    Foundations
    Core Drilling
    Call
  • Ian Brookes Building Contractors

    10.00

    (15 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Refurbishments
    General Building
    Call
  • Cw Construction & Maintenance Logo

    Cw Construction & Maintenance

    10.00

    (4 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Sustainable Construction
    Basement / Cellar Conversions
    Garden Studios
    Call
  • Build Fix Design Bolton Logo

    Build Fix Design Bolton

    9.68

    (30 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Basement / Cellar Conversions
    Garage Conversions
    Car Ports
    Call
  • MRT Building Services Limited Logo

    MRT Building Services Limited

    10.00

    (8 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Steel Fabrication
    Refurbishments
    Garden Studios
    Call
  • XCELTEC Limited Logo

    XCELTEC Limited

    9.76

    (13 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Garden Studios
    Workshop Design / Construction
    Call
  • Casa Building Solutions Ltd Logo

    Casa Building Solutions Ltd

    9.92

    (119 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Fire and Flood Renovation
    Wall Tie Replacements
    Cladding
    Call
  • Stephen's Building Solutions Logo

    Stephen's Building Solutions

    10.00

    (115 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Steel Fabrication
    Brick / Concrete Structural Repairs
    New Builds
    Call
  • Steve Parkes Builders Logo

    Steve Parkes Builders

    10.00

    (15 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Car Ports
    Wall Tie Replacements
    Basement / Cellar Conversions
    Call
  • Olympus Property Development Ltd Logo

    Olympus Property Development Ltd

    10.00

    (3 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Garden Studios
    Workshop Design / Construction
    Loft Conversions
    Call
  • Horizon Aluminium Seamless Guttering Logo

    Horizon Aluminium Seamless Guttering

    (6 reviews)

    Operates in Horwich

    Services & skills
    Builder
    Extensions / Conversions
    Wall Tie Replacements
    Demolition
    Mastic Sealant
    Call

Conversion and extension builders in Horwich

Planning a loft conversion, garage makeover or full house extension in Horwich? You’re in the right place. Whether you’re adding space for a growing family, upgrading your layout or increasing your home’s value, we can help you find the right tradesperson for the job.

Find extension and conversion builders in Horwich

Every builder on Checkatrade passes up to 12 checks before they appear in your search. You can read verified reviews, compare services, and even post your job to get quotes straight to your inbox, all in a few clicks. That’s how we help homeowners like you get a job done right.

What to expect from hiring an extension or conversion builder in Horwich

Our checked tradespeople in Horwich cover a wide range of projects, including:

  • Single or double-storey house extensions

  • Kitchen and diner extensions

  • Loft, attic, garage or basement conversions

  • Garden room extensions

  • Utility room extensions

  • Over-garage extensions and side returns

Extension and conversion build costs in Horwich

Costs of extensions and conversions vary depending on size, structure and spec, but here's a rough guide:

Extensions:

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Loft conversions:

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Garage conversions:

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Conservatory roof conversions:

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Need help calculating costs? Use our Job Value Estimator Tool for a bespoke cost estimate.

What to check before you hire:

  • Are drawings or planning permissions needed?
  • Are they familiar with building regs?
  • Is the quote fixed or flexible?
  • Does it cover materials and project management?

Most builders will include prep, construction, electrics, plumbing and final finishes in their quote, but always double-check. Timelines range from a few weeks for simple jobs to several months for bigger builds.

Extension and conversion builders in Horwich: Homeowners vs renters

Homeowners:

You’re in charge of the project. That means hiring the builder, securing permissions, and paying for the work. You may need:

  • Planning permission (especially for double-storey builds or changes near boundaries)

  • Drawings from an architect or structural engineer

  • Building regs approval

If you’re not sure where to start, speak to a local builder or post your job to get help with the process.

Renters:

You’ll usually need your landlord’s approval to make any big changes. In most cases, your landlord will be the one arranging and paying for structural changes like loft conversions or extensions. That said, it’s worth flagging ideas if you think they’ll improve the property, especially if it means longer tenancies or fewer repairs.

Emergency extension or conversion help in Horwich

Extensions and conversions are big projects, but sometimes, things go wrong and need sorting fast. Common urgent issues include:

  • Leaks in newly converted lofts

  • Structural cracks or shifting

  • Faulty electrics or plumbing in newly added rooms

  • Incomplete work by previous builders

Facing an emergency in Horwich? Enter your postcode or post a job to find emergency services in your area.

Find the right extension or conversion specialist in Horwich

Looking for a builder to help with:

  • Rear house extensions
  • Kitchen extensions
  • Garage conversions
  • Loft or attic conversions
  • Garden room builds
  • Basement or cellar conversions
  • Conservatory roof upgrades
  • Utility or porch extensions

Start your search now


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