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Loft Conversion Specialists in Crowthorne (147)

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  • Dawkins Prestige Ltd Logo

    Dawkins Prestige Ltd

    9.98

    (19 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    New Builds
    General Building
    Call
  • Buildtonic Ltd Logo

    Buildtonic Ltd

    10.00

    (13 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    Basement / Cellar Conversions
    Fire and Flood Renovation
    Project Management
    Call
  • Gomm Developments Logo

    Gomm Developments

    10.00

    (13 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    Emergency Builder Service
    Period Property Restoration
    Foundations
    Call
  • Anaid construction Ltd Logo

    Anaid construction Ltd

    9.89

    (16 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    Demolition
    Garage Conversions
    Car Ports
    Call
  • Proficient Property Services LTD Logo

    Proficient Property Services LTD

    9.98

    (20 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    General Building
    Fire and Flood Renovation
    Partition Walls
    Call
  • PRS Building Solutions Logo

    PRS Building Solutions

    9.91

    (438 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    Emergency Builder Service
    Equestrian Stable
    New Builds
    Call
  • Cheney Construction Logo

    Cheney Construction

    9.89

    (35 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    Structural Steels
    Refurbishments
    Foundations
    Call
  • GENERAL BUILDING Logo

    GENERAL BUILDING

    9.87

    (28 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Equestrian Stable
    General Building
    Call
  • CLEEKDEVELOPMENTS LTD Logo

    CLEEKDEVELOPMENTS LTD

    (0 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Agricultural Building
    Concrete Garages
    Call
  • Ayton-smith Limited Logo

    Ayton-smith Limited

    9.79

    (42 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Loft Conversions
    Garage Conversions
    Call
  • Inspire 4 Design Ltd Logo

    Inspire 4 Design Ltd

    10.00

    (2 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    Workshop Design / Construction
    General Building
    Agricultural Building
    Call
  • Nexgen Builders Limited Logo

    Nexgen Builders Limited

    9.36

    (5 reviews)

    Operates in Crowthorne

    Services & skills
    Builder
    Extensions / Conversions
    Foundations
    Concrete Garages
    Garden Studios
    Call

Conversion and extension builders in Crowthorne

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

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 Crowthorne

Our checked tradespeople in Crowthorne 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 Crowthorne

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 Crowthorne: 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 Crowthorne

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

Find the right extension or conversion specialist in Crowthorne

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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