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Extensions / Conversions in Raynes Park (310)

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  • Sponsored
    The Bright Build Co. Logo

    The Bright Build Co.

    10.00

    (2 reviews)

    Operates in Raynes Park

    Suggested Services
    Extensions / Conversions
    Price on request
    Call
  • LBL Pro Construction Limited Logo

    LBL Pro Construction Limited

    10.00

    (55 reviews)

    Operates in Raynes Park

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Loft Conversions
    Call
  • Ni Building Services Ltd Logo

    Ni Building Services Ltd

    9.76

    (65 reviews)

    Operates in Raynes Park

    Services & skills
    Builder
    Extensions / Conversions
    Structural Design
    Refurbishments
    New Builds
    Call
  • Distinctive Brickwork & Construction Logo

    Distinctive Brickwork & Construction

    9.84

    (249 reviews)

    Operates in Raynes Park

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Stretched Ceilings
    Mastic Sealant
    Call
  • Zaranek's Construction Ltd Logo

    Zaranek's Construction Ltd

    9.81

    (50 reviews)

    Operates in Raynes Park

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Foundations
    Insurance Claim Specialist
    Call
  • Dobruna Construction Limited Logo

    Dobruna Construction Limited

    10.00

    (24 reviews)

    Operates in Raynes Park

    Services & skills
    Builder
    Extensions / Conversions
    Mastic Sealant
    Cladding
    Warehouse Racking
    Call
  • T.K. Winners Ltd Logo

    T.K. Winners Ltd

    9.61

    (30 reviews)

    Operates in Raynes Park

    Services & skills
    Builder
    Extensions / Conversions
    Suspended Ceilings
    Concreting
    Garage Conversions
    Call
  • Kozi Construction Ltd Logo

    Kozi Construction Ltd

    10.00

    (63 reviews)

    Operates in Raynes Park

    Services & skills
    Builder
    Extensions / Conversions
    Heritage Property Specialist
    Loft Conversions
    Agricultural Building
    Call
  • Nexgen Builders Limited Logo

    Nexgen Builders Limited

    9.50

    (6 reviews)

    Operates in Raynes Park

    Services & skills
    Builder
    Extensions / Conversions
    Garden Studios
    Foundations
    Concrete Garages
    Call
  • PNM BUILDERS LTD Logo

    PNM BUILDERS LTD

    8.56

    (16 reviews)

    Operates in Raynes Park

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Call
  • Z H Refurbishment Ltd Logo

    Z H Refurbishment Ltd

    9.55

    (26 reviews)

    Operates in Raynes Park

    Services & skills
    Builder
    Extensions / Conversions
    Call
  • PedersenHomes Ltd Logo

    PedersenHomes Ltd

    10.00

    (6 reviews)

    Operates in Raynes Park

    Services & skills
    Builder
    Extensions / Conversions
    Mastic Sealant
    Equestrian Stable
    Concrete Garages
    Call

Conversion and extension builders in Raynes Park

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

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 Raynes Park

Our checked tradespeople in Raynes Park 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 Raynes Park

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 Raynes Park: 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 Raynes Park

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

Find the right extension or conversion specialist in Raynes Park

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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