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Extensions / Conversions in Radstock (60)

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  • BSF Construction Logo

    BSF Construction

    10.00

    (36 reviews)

    Operates in Radstock

    Services & skills
    Builder
    Extensions / Conversions
    Concrete Garages
    Partition Walls
    Green Oak Framing
    Call
  • Home Arc Ltd Logo

    Home Arc Ltd

    10.00

    (13 reviews)

    Operates in Radstock

    Suggested Services
    Architectural Plan Design and Submission
    £3,799 / job
    Call
  • JSP Maintenance Logo

    JSP Maintenance

    9.43

    (55 reviews)

    Operates in Radstock

    Services & skills
    Builder
    Extensions / Conversions
    Demolition
    Brick / Concrete Structural Repairs
    Garage Conversions
    Call
  • Frazer Nye Carpentry & Building Logo

    Frazer Nye Carpentry & Building

    9.92

    (68 reviews)

    Operates in Radstock

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Loft Conversions
    General Building
    Call
  • Matt Best Complete Building Services Logo

    Matt Best Complete Building Services

    9.89

    (149 reviews)

    Operates in Radstock

    Services & skills
    Builder
    Extensions / Conversions
    Mastic Sealant
    Insurance Claim Specialist
    Agricultural Building
    Call
  • Daxa Building Solutions Ltd Logo

    Daxa Building Solutions Ltd

    9.86

    (42 reviews)

    Operates in Radstock

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    General Building
    Loft Conversions
    Call
  • Future Build South West Ltd Logo

    Future Build South West Ltd

    10.00

    (72 reviews)

    Operates in Radstock

    Services & skills
    Builder
    Extensions / Conversions
    Concrete Garages
    Agricultural Building
    Structural Steels
    Call
  • Maven Construction Logo

    Maven Construction

    10.00

    (7 reviews)

    Operates in Radstock

    Services & skills
    Builder
    Extensions / Conversions
    Fire and Flood Renovation
    Demolition
    Foundations
    Call
  • Bluewater Design and Construction Logo

    Bluewater Design and Construction

    9.90

    (51 reviews)

    Operates in Radstock

    Services & skills
    Builder
    Extensions / Conversions
    Concrete Garages
    Partition Walls
    Brick / Concrete Structural Repairs
    Call
  • SGH Carpentry & Building Logo

    SGH Carpentry & Building

    8.39

    (19 reviews)

    Operates in Radstock

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Concrete Garages
    Car Ports
    Call
  • Nick Dyer Construction Limited Logo

    Nick Dyer Construction Limited

    9.50

    (148 reviews)

    Operates in Radstock

    Services & skills
    Builder
    Extensions / Conversions
    General Building
    Stretched Ceilings
    Demolition
    Call
  • The Ugly Duckling Building Company LTD Logo

    The Ugly Duckling Building Company LTD

    (0 reviews)

    Operates in Radstock

    Services & skills
    Builder
    Extensions / Conversions
    Brick / Concrete Structural Repairs
    Garage Conversions
    Project Management
    Call

Conversion and extension builders in Radstock

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

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 Radstock

Our checked tradespeople in Radstock 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

Costs to expect

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

Single - storey extensions: £21,000 - £65,000

Double - storey extensions: £55,000 - £95,000

Loft conversions: £35,000 - £65,000

Garage conversions: £8,000 - £20,000

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 Radstock: 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 Radstock

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

Find the right extension or conversion specialist in Radstock

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

Looking for more tradespeople in Radstock?

Find Checkatrade reviewed Tradespeople, get a quote today, discover related services in Radstock and check out our latest home improvement guides.