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Extensions / Conversions in Sherborne (31)

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  • I J Builders Logo

    I J Builders

    10.00

    (217 reviews)

    Operates in Sherborne

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Workshop Design / Construction
    New Builds
    Call
  • AJ Vincent Loft Conversions Logo

    AJ Vincent Loft Conversions

    9.94

    (110 reviews)

    Operates in Sherborne

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Partition Walls
    General Building
    Call
  • Sbssw ltd Logo

    Sbssw ltd

    10.00

    (109 reviews)

    Operates in Sherborne

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Suspended Ceilings
    Workshop Design / Construction
    Call
  • N Cook Building and Plastering Services Logo

    N Cook Building and Plastering Services

    9.50

    (58 reviews)

    Operates in Sherborne

    Services & skills
    Builder
    Extensions / Conversions
    Cladding
    Car Ports
    Wall Tie Replacements
    Call
  • Home Arc Ltd Logo

    Home Arc Ltd

    10.00

    (13 reviews)

    Operates in Sherborne

    Suggested Services
    Architectural Plan Design and Submission
    £3,799 / job
    Call
  • D Dunn Ground Works Logo

    D Dunn Ground Works

    9.92

    (111 reviews)

    Operates in Sherborne

    Services & skills
    Builder
    Extensions / Conversions
    Wall Tie Replacements
    Equestrian Stable
    Steel Fabrication
    Call
  • Dopson developments Ltd

    (0 reviews)

    Operates in Sherborne

    Services & skills
    Builder
    Extensions / Conversions
    Foundations
    Refurbishments
    Suspended Ceilings
    Call
  • Complete Carpentry & Building Contractors Ltd Logo

    Complete Carpentry & Building Contractors Ltd

    10.00

    (46 reviews)

    Operates in Sherborne

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Partition Walls
    Concreting
    Call
  • Wessex Property Services Dorset Logo

    Wessex Property Services Dorset

    10.00

    (10 reviews)

    Operates in Sherborne

    Services & skills
    Builder
    Extensions / Conversions
    Basement / Cellar Conversions
    Car Ports
    Garden Studios
    Call
  • M Dunston Building Contractors Logo

    M Dunston Building Contractors

    10.00

    (28 reviews)

    Operates in Sherborne

    Services & skills
    Builder
    Extensions / Conversions
    Wall Tie Replacements
    Structural Steels
    Garage Conversions
    Call
  • S & R Construction (South West) Limited Logo

    S & R Construction (South West) Limited

    (10 reviews)

    Operates in Sherborne

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Loft Conversions
    Brick / Concrete Structural Repairs
    Call
  • Sparrow Carpentry And Building Logo

    Sparrow Carpentry And Building

    10.00

    (47 reviews)

    Operates in Sherborne

    Services & skills
    Builder
    Extensions / Conversions
    Concreting
    Basement / Cellar Conversions
    Demolition
    Call

Conversion and extension builders in Sherborne

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

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 Sherborne

Our checked tradespeople in Sherborne 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 Sherborne

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 Sherborne: 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 Sherborne

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

Find the right extension or conversion specialist in Sherborne

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 Sherborne?

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