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Extensions / Conversions in Kensal Green (306)

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  • Sponsored
    Archies Group Logo

    Archies Group

    9.79

    (74 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    Sustainable Construction
    Partition Walls
    Refurbishments
    Call
  • Mili Builders (Mili Property Ltd) Logo

    Mili Builders (Mili Property Ltd)

    9.67

    (3 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    Call
  • Cooney Builders

    10.00

    (20 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    Repair and Listed Building Specialist
    Brick / Concrete Structural Repairs
    Steel Work Design
    Call
  • BMB UKR CONSTRUCTION LTD Logo

    BMB UKR CONSTRUCTION LTD

    10.00

    (11 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    Sustainable Construction
    Structural Steels
    Fire and Flood Renovation
    Call
  • TipTop Contractors Ltd Logo

    TipTop Contractors Ltd

    10.00

    (107 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    New Builds
    Loft Conversions
    Call
  • Anant Design And Build Limited Logo

    Anant Design And Build Limited

    10.00

    (13 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Foundations
    Garden Studios
    Call
  • Reza Construction Logo

    Reza Construction

    9.73

    (5 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    Repair and Listed Building Specialist
    Garage Conversions
    Concrete Garages
    Call
  • Edgware Builders Logo

    Edgware Builders

    9.22

    (52 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    Agricultural Building
    General Building
    Refurbishments
    Call
  • JP Building Services Logo

    JP Building Services

    9.92

    (104 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    Foundations
    Brick / Concrete Structural Repairs
    Repair and Listed Building Specialist
    Call
  • Z&a Construction Ltd Logo

    Z&a Construction Ltd

    9.92

    (78 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    Partition Walls
    Fire and Flood Renovation
    Basement / Cellar Conversions
    Call
  • Purple Brown Building Services Ltd Logo

    Purple Brown Building Services Ltd

    9.93

    (26 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Loft Conversions
    Period Property Restoration
    Call
  • North Star Building Solutions Limited Logo

    North Star Building Solutions Limited

    9.93

    (198 reviews)

    Operates in Kensal Green

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    New Builds
    Loft Conversions
    Call

Conversion and extension builders in Kensal Green

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

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 Kensal Green

Our checked tradespeople in Kensal Green 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 Kensal Green

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 Kensal Green: 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 Kensal Green

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

Find the right extension or conversion specialist in Kensal Green

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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