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Extensions / Conversions in Camberwell (245)

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  • Sponsored
    Building Bulls Ltd Logo

    Building Bulls Ltd

    9.92

    (8 reviews)

    Operates in Camberwell

    Services & skills
    Builder
    Extensions / Conversions
    Basement / Cellar Conversions
    Garage Conversions
    Emergency Builder Service
    Call
  • Sponsored
    Abaco Marea Logo

    Abaco Marea

    9.89

    (110 reviews)

    Operates in Camberwell

    Services & skills
    Builder
    Extensions / Conversions
    Steel Work Design
    Structural Design
    Concreting
    Call
  • RSP A1 Construction Ltd Logo

    RSP A1 Construction Ltd

    9.87

    (23 reviews)

    Operates in Camberwell

    Services & skills
    Builder
    Extensions / Conversions
    Period Property Restoration
    Refurbishments
    Sustainable Construction
    Call
  • Builders of London Ltd Logo

    Builders of London Ltd

    9.80

    (21 reviews)

    Operates in Camberwell

    Suggested Services
    Single-Story Extension Build (3m x 4m)
    £28,000 / job
    Call
  • MI Building Contractors Ltd Logo

    MI Building Contractors Ltd

    9.67

    (20 reviews)

    Operates in Camberwell

    Services & skills
    Builder
    Extensions / Conversions
    Concreting
    Concrete Garages
    General Building
    Call
  • S&B Building Services Ltd Logo

    S&B Building Services Ltd

    10.00

    (22 reviews)

    Operates in Camberwell

    Suggested Services
    Construction of House Extension
    £50,000 / job
    Call
  • ABL Building Construction Limited Logo

    ABL Building Construction Limited

    9.89

    (26 reviews)

    Operates in Camberwell

    Services & skills
    Builder
    Extensions / Conversions
    Core Drilling
    Demolition
    Insurance Claim Specialist
    Call
  • Mulas construction ltd Logo

    Mulas construction ltd

    (13 reviews)

    Operates in Camberwell

    Services & skills
    Builder
    Extensions / Conversions
    Fire and Flood Renovation
    Heritage Property Specialist
    Concreting
    Call
  • PNM BUILDERS LTD Logo

    PNM BUILDERS LTD

    8.92

    (17 reviews)

    Operates in Camberwell

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Call
  • Grant Painting and Refurbishing Ltd Logo

    Grant Painting and Refurbishing Ltd

    9.89

    (43 reviews)

    Operates in Camberwell

    Services & skills
    Builder
    Extensions / Conversions
    Concrete Garages
    Agricultural Building
    Partition Walls
    Call
  • Affordable Property Repairs Ltd Logo

    Affordable Property Repairs Ltd

    9.89

    (389 reviews)

    Operates in Camberwell

    Services & skills
    Builder
    Extensions / Conversions
    Insurance Claim Specialist
    Concreting
    General Building
    Call
  • Jack's Builders Limited Logo

    Jack's Builders Limited

    10.00

    (7 reviews)

    Operates in Camberwell

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Foundations
    Refurbishments
    Call

Conversion and extension builders in Camberwell

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

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 Camberwell

Our checked tradespeople in Camberwell 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 Camberwell

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 Camberwell: 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 Camberwell

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

Find the right extension or conversion specialist in Camberwell

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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