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Extensions / Conversions in Spalding (9)

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  • Transparent Group Logo

    Transparent Group

    9.18

    (12 reviews)

    Operates in Spalding

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Concrete Garages
    Basement / Cellar Conversions
    Call
  • Excell Home Improvement Logo

    Excell Home Improvement

    8.67

    (73 reviews)

    Operates in Spalding

    Services & skills
    Builder
    Extensions / Conversions
    Partition Walls
    Equestrian Stable
    Garage Conversions
    Call
  • Inscape Ltd Logo

    Inscape Ltd

    10.00

    (9 reviews)

    Operates in Spalding

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Partition Walls
    Foundations
    Call
  • CP BUILDING & ROOFING SERVICES LTD Logo

    CP BUILDING & ROOFING SERVICES LTD

    10.00

    (3 reviews)

    Operates in Spalding

    Suggested Services
    House Extension - Single Storey
    £25,000 / job
    Call
  • Built Norfolk Logo

    Built Norfolk

    9.85

    (19 reviews)

    Operates in Spalding

    Services & skills
    Builder
    Extensions / Conversions
    Car Ports
    Wall Tie Replacements
    Concrete Garages
    Call
  • Millthorpe Building & Property Services Logo

    Millthorpe Building & Property Services

    10.00

    (40 reviews)

    Operates in Spalding

    Services & skills
    Builder
    Extensions / Conversions
    Partition Walls
    Brick / Concrete Structural Repairs
    Emergency Builder Service
    Call
  • CS Carpentry & Building Services Logo

    CS Carpentry & Building Services

    9.98

    (144 reviews)

    Operates in Spalding

    Services & skills
    Builder
    Extensions / Conversions
    Project Management
    Demolition
    Fire and Flood Renovation
    Call
  • Wayne Robinson Logo

    Wayne Robinson

    9.53

    (5 reviews)

    Operates in Spalding

    Services & skills
    Builder
    Extensions / Conversions
    Emergency Builder Service
    General Building
    Brick / Concrete Structural Repairs
    Call
  • L&M Building Services Logo

    L&M Building Services

    9.42

    (39 reviews)

    Operates in Spalding

    Services & skills
    Builder
    Extensions / Conversions
    Agricultural Building
    Basement / Cellar Conversions
    Insurance Claim Specialist
    Call

Conversion and extension builders in Spalding

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

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 Spalding

Our checked tradespeople in Spalding 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 Spalding: 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 Spalding

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

Find the right extension or conversion specialist in Spalding

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 Spalding?

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