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Extensions / Conversions in Yorkshire (21)

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  • Sponsored
    MGS Building Logo

    MGS Building

    9.66

    (91 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    Garden Studios
    Basement / Cellar Conversions
    Mastic Sealant
    Call
  • Aspire Construction (Darlington) Logo

    Aspire Construction (Darlington)

    9.78

    (30 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Partition Walls
    Structural Steels
    Call
  • Kensington Home Improvements Logo

    Kensington Home Improvements

    10.00

    (104 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    Wall Tie Replacements
    Refurbishments
    Emergency Builder Service
    Call
  • Ashbrookes Design & Build Limited Logo

    Ashbrookes Design & Build Limited

    9.50

    (2 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    Car Ports
    Suspended Ceilings
    Cladding
    Call
  • JT Building Solutions Logo

    JT Building Solutions

    9.85

    (43 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    Property Maintenance / Repair
    Cladding
    Project Management
    Call
  • Expert Builders Ltd Logo

    Expert Builders Ltd

    10.00

    (11 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    Steel Fabrication
    Structural Steels
    Wall Tie Replacements
    Call
  • Impress Property Services Ltd Logo

    Impress Property Services Ltd

    (104 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    Partition Walls
    Period Property Restoration
    Cladding
    Call
  • Kingdom Builders Logo

    Kingdom Builders

    10.00

    (17 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    Basement / Cellar Conversions
    Fire and Flood Renovation
    Garden Studios
    Call
  • Barry Shaw & Son Building Ltd Logo

    Barry Shaw & Son Building Ltd

    10.00

    (101 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Sustainable Construction
    Equestrian Stable
    Call
  • Cailes Builders Ltd Logo

    Cailes Builders Ltd

    9.86

    (21 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    Car Ports
    Workshop Design / Construction
    Equestrian Stable
    Call
  • Armiger Joinery Ltd Logo

    Armiger Joinery Ltd

    9.94

    (48 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    Sustainable Construction
    Fire and Flood Renovation
    Agricultural Building
    Call
  • A19 Garage Conversions and Building Services

    10.00

    (100 reviews)

    Operates in North Yorkshire

    Services & skills
    Builder
    Extensions / Conversions
    Brick / Concrete Structural Repairs
    General Building
    Refurbishments
    Call

Conversion and extension builders in North Yorkshire

Planning a loft conversion, garage makeover or full house extension in North Yorkshire? 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 North Yorkshire

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 North Yorkshire

Our checked tradespeople in North Yorkshire 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 North Yorkshire

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 North Yorkshire: 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 North Yorkshire

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 North Yorkshire? Enter your postcode or post a job to find emergency services in your area.

Find the right extension or conversion specialist in North Yorkshire

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


Looking for more tradespeople in North Yorkshire?

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