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Extension Builders in Rayleigh (57)

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  • 1 Stop Building Services Logo

    1 Stop Building Services

    9.98

    (171 reviews)

    Operates in Rayleigh

    Suggested Services
    Home Extension - Design and Build
    £1 / job
    Call
  • M.R CONSTRUCTION & CARPENTRY LTD Logo

    M.R CONSTRUCTION & CARPENTRY LTD

    9.93

    (5 reviews)

    Operates in Rayleigh

    Services & skills
    Builder
    Extensions / Conversions
    Foundations
    Period Property Restoration
    General Building
    Call
  • HARVEY & SON ESSEX LTD Logo

    HARVEY & SON ESSEX LTD

    10.00

    (10 reviews)

    Operates in Rayleigh

    Services & skills
    Builder
    Extensions / Conversions
    Partition Walls
    Cladding
    Loft Conversions
    Call
  • Migss Tiles & Luxury Interiors Ltd Logo

    Migss Tiles & Luxury Interiors Ltd

    9.97

    (13 reviews)

    Operates in Rayleigh

    Services & skills
    Builder
    Extensions / Conversions
    Basement / Cellar Conversions
    Loft Conversions
    Concrete Garages
    Call
  • Essex Builder Construction Ltd Logo

    Essex Builder Construction Ltd

    8.97

    (23 reviews)

    Operates in Rayleigh

    Services & skills
    Builder
    Extensions / Conversions
    Workshop Design / Construction
    Insurance Claim Specialist
    General Building
    Call
  • Muras Construction Ltd Logo

    Muras Construction Ltd

    9.95

    (12 reviews)

    Operates in Rayleigh

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    New Builds
    Call
  • THOMPSON BUILD GROUP LTD Logo

    THOMPSON BUILD GROUP LTD

    10.00

    (26 reviews)

    Operates in Rayleigh

    Services & skills
    Builder
    Extensions / Conversions
    Demolition
    Garden Studios
    Brick / Concrete Structural Repairs
    Call
  • Aspen Building Solutions Limited Logo

    Aspen Building Solutions Limited

    9.95

    (13 reviews)

    Operates in Rayleigh

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Loft Conversions
    Call
  • Don Contractors Ltd Logo

    Don Contractors Ltd

    10.00

    (21 reviews)

    Operates in Rayleigh

    Services & skills
    Builder
    Extensions / Conversions
    Car Ports
    Agricultural Building
    Fire and Flood Renovation
    Call
  • SMC Builders Logo

    SMC Builders

    9.89

    (76 reviews)

    Operates in Rayleigh

    Services & skills
    Builder
    Extensions / Conversions
    Garden Studios
    Workshop Design / Construction
    Tree Houses
    Call
  • Maven Design And Build Limited Logo

    Maven Design And Build Limited

    9.90

    (12 reviews)

    Operates in Rayleigh

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Insurance Claim Specialist
    New Builds
    Call
  • Tyza Development Ltd Logo

    Tyza Development Ltd

    9.86

    (18 reviews)

    Operates in Rayleigh

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Basement / Cellar Conversions
    Cladding
    Call

Conversion and extension builders in Rayleigh

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

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 Rayleigh

Our checked tradespeople in Rayleigh 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 Rayleigh

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 Rayleigh: 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 Rayleigh

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

Find the right extension or conversion specialist in Rayleigh

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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