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Extensions / Conversions in Halifax (10)

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  • Nex Gen Building Services Ltd Logo

    Nex Gen Building Services Ltd

    9.64

    (61 reviews)

    Operates in Halifax

    Services & skills
    Builder
    Extensions / Conversions
    Cladding
    Demolition
    Suspended Ceilings
    Call
  • Broadbent Building Services Logo

    Broadbent Building Services

    9.60

    (22 reviews)

    Operates in Halifax

    Services & skills
    Builder
    Extensions / Conversions
    Structural Steels
    Concreting
    Concrete Garages
    Call
  • Corebase Extensions & Groundwork Ltd Logo

    Corebase Extensions & Groundwork Ltd

    (0 reviews)

    Operates in Halifax

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Garden Studios
    Demolition
    Call
  • Marwa.d Ltd Logo

    Marwa.d Ltd

    (33 reviews)

    Operates in Halifax

    Services & skills
    Builder
    Extensions / Conversions
    Brick / Concrete Structural Repairs
    Property Maintenance / Repair
    Tree Houses
    Call
  • Handley Builders Group Ltd Logo

    Handley Builders Group Ltd

    10.00

    (4 reviews)

    Operates in Halifax

    Services & skills
    Builder
    Extensions / Conversions
    Call
  • R&M PLASTERING N BUILDING Logo

    R&M PLASTERING N BUILDING

    10.00

    (1 review)

    Operates in Halifax

    Services & skills
    Builder
    Extensions / Conversions
    Brick / Concrete Structural Repairs
    Workshop Design / Construction
    Concreting
    Call
  • Mdj Building Contractors Ltd

    9.80

    (9 reviews)

    Operates in Halifax

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Core Drilling
    Wall Tie Replacements
    Call
  • Prohaus Design Limited

    (0 reviews)

    Operates in Halifax

    Services & skills
    Builder
    Extensions / Conversions
    Steel Fabrication
    Garage Conversions
    Suspended Ceilings
    Call
  • Drake & Sons Ltd

    (40 reviews)

    Operates in Halifax

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Agricultural Building
    Wall Tie Replacements
    Call
  • Ratcliffe Carpentry & Building Ltd Logo

    Ratcliffe Carpentry & Building Ltd

    9.86

    (125 reviews)

    Operates in Halifax

    Services & skills
    Builder
    Extensions / Conversions
    Repair and Listed Building Specialist
    Agricultural Building
    Green Oak Framing
    Call

Conversion and extension builders in Halifax

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

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 Halifax

Our checked tradespeople in Halifax 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

Costs to expect

Costs of extensions and conversions vary depending on size, structure and spec, but here's a rough guide:

Single - storey extensions: £21,000 - £65,000

Double - storey extensions: £55,000 - £95,000

Loft conversions: £35,000 - £65,000

Garage conversions: £8,000 - £20,000

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 Halifax: 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 Halifax

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

Find the right extension or conversion specialist in Halifax

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

Looking for more tradespeople in Halifax?

Find Checkatrade reviewed Tradespeople, get a quote today, discover related services in Halifax and check out our latest home improvement guides.