Extensions / Conversions in Kennington And Radley (50)

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  • Sponsored
    DR Building and Carpentry Services Logo

    DR Building and Carpentry Services

    9.86

    (79 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    Fire and Flood Renovation
    Period Property Restoration
    Steel Fabrication
    Call
  • Sponsored
    GPC TRAINING LTD Logo

    GPC TRAINING LTD

    10.00

    (5 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    Emergency Builder Service
    Property Maintenance / Repair
    Cladding
    Call
  • DR Building and Carpentry Services Logo

    DR Building and Carpentry Services

    9.86

    (79 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    Car Ports
    Steel Work Design
    Equestrian Stable
    Call
  • Oasis Builders & Co . Ltd Logo

    Oasis Builders & Co . Ltd

    10.00

    (3 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Garage Conversions
    Loft Conversions
    Call
  • AM Building Services Logo

    AM Building Services

    10.00

    (31 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    Brick / Concrete Structural Repairs
    Equestrian Stable
    Workshop Design / Construction
    Call
  • Absolute Carpentry & Kitchens Logo

    Absolute Carpentry & Kitchens

    9.93

    (74 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    Suspended Ceilings
    Wall Tie Replacements
    Car Ports
    Call
  • Apple Building & Property Solutions Ltd Logo

    Apple Building & Property Solutions Ltd

    9.56

    (80 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    Brick / Concrete Structural Repairs
    Structural Steels
    Car Ports
    Call
  • Hartnett Carpentry and Joinery LTD Logo

    Hartnett Carpentry and Joinery LTD

    9.33

    (15 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Fire and Flood Renovation
    Brick / Concrete Structural Repairs
    Call
  • LA Buildmasters Ltd Logo

    LA Buildmasters Ltd

    9.83

    (9 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    General Building
    Garage Conversions
    Refurbishments
    Call
  • GDS CONSTRUCTION LIMITED Logo

    GDS CONSTRUCTION LIMITED

    9.78

    (25 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    Concreting
    Fire and Flood Renovation
    Foundations
    Call
  • JMCK Builders Limited Logo

    JMCK Builders Limited

    9.61

    (18 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    Suspended Ceilings
    Cladding
    General Building
    Call
  • Ff Construction Ltd Logo

    Ff Construction Ltd

    10.00

    (4 reviews)

    Operates in Kennington And Radley

    Services & skills
    Builder
    Extensions / Conversions
    General Building
    Loft Conversions
    Mastic Sealant
    Call

Top rated Extensions / Conversions in Kennington And Radley

10

/10

57 ratings

Our Extensions / Conversions in Kennington And Radley are rated an average of 10 out of 10 based on a sample of 57 reviews from customers like you*

*This review aggregate is based on real customer reviews from a randomly selected postcode in this area

Conversion and extension builders in Kennington And Radley

Planning a loft conversion, garage makeover or full house extension in Kennington And Radley? 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 Kennington And Radley

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 Kennington And Radley

Our checked tradespeople in Kennington And Radley 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 Kennington And Radley

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

Extensions:

£32709 on average, with prices typically starting at £20085 up to £52106.

Loft conversions:

£35928 on average, with prices typically starting at £23495 up to £54370.

Garage conversions:

£11307 on average, with prices typically starting at £7931 up to £16168.

Conservatory roof conversions:

£8088 on average, with prices typically starting at £5783 up to £11360.

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 Kennington And Radley: 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 Kennington And Radley

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 Kennington And Radley? Enter your postcode or post a job to find emergency services in your area.

Find the right extension or conversion specialist in Kennington And Radley

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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