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Extensions / Conversions in Southwater (105)

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  • Sponsored
    JT Builds & Specialised Carpentry Logo

    JT Builds & Specialised Carpentry

    9.94

    (11 reviews)

    Operates in Southwater

    Services & skills
    Builder
    Extensions / Conversions
    Emergency Builder Service
    New Builds
    Loft Conversions
    Call
  • JB Carpentry & Construction Logo

    JB Carpentry & Construction

    10.00

    (32 reviews)

    Operates in Southwater

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Structural Steels
    Call
  • JT Builds & Specialised Carpentry Logo

    JT Builds & Specialised Carpentry

    9.94

    (11 reviews)

    Operates in Southwater

    Services & skills
    Builder
    Extensions / Conversions
    Property Maintenance / Repair
    Emergency Builder Service
    Sustainable Construction
    Call
  • RTC Building & Renovations Ltd Logo

    RTC Building & Renovations Ltd

    10.00

    (94 reviews)

    Operates in Southwater

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Insurance Claim Specialist
    Fire and Flood Renovation
    Call
  • Daniel Ridge Construction

    9.77

    (205 reviews)

    Operates in Southwater

    Services & skills
    Builder
    Extensions / Conversions
    Concreting
    Garden Studios
    Garage Conversions
    Call
  • Luxe signature build ltd Logo

    Luxe signature build ltd

    10.00

    (7 reviews)

    Operates in Southwater

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    New Builds
    Garden Studios
    Call
  • FRC Roofing and Property Maintenance Logo

    FRC Roofing and Property Maintenance

    9.75

    (253 reviews)

    Operates in Southwater

    Services & skills
    Builder
    Extensions / Conversions
    Sustainable Construction
    Concreting
    Cladding
    Call
  • Waterproof Systems Ltd Logo

    Waterproof Systems Ltd

    10.00

    (497 reviews)

    Operates in Southwater

    Services & skills
    Builder
    Extensions / Conversions
    Concreting
    General Building
    Partition Walls
    Call
  • Benson & co Logo

    Benson & co

    9.83

    (7 reviews)

    Operates in Southwater

    Services & skills
    Builder
    Extensions / Conversions
    Foundations
    Concrete Garages
    Brick / Concrete Structural Repairs
    Call
  • Croft Builders Ltd

    9.95

    (157 reviews)

    Operates in Southwater

    Services & skills
    Builder
    Extensions / Conversions
    Repair and Listed Building Specialist
    Partition Walls
    New Builds
    Call
  • Build Sussex Ltd Logo

    Build Sussex Ltd

    10.00

    (6 reviews)

    Operates in Southwater

    Services & skills
    Builder
    Extensions / Conversions
    Basement / Cellar Conversions
    Foundations
    New Builds
    Call
  • Infinity Construction Group South East Ltd Logo

    Infinity Construction Group South East Ltd

    9.90

    (29 reviews)

    Operates in Southwater

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

Conversion and extension builders in Southwater

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

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 Southwater

Our checked tradespeople in Southwater 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 Southwater

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 Southwater: 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 Southwater

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

Find the right extension or conversion specialist in Southwater

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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