Extensions / Conversions in Whittlesey (23)

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  • Sponsored
    TPS Builders Limited Logo

    TPS Builders Limited

    10.00

    (14 reviews)

    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Concrete Garages
    Basement / Cellar Conversions
    Call
  • JJ General Building Ltd Logo

    JJ General Building Ltd

    10.00

    (6 reviews)

    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Agricultural Building
    Basement / Cellar Conversions
    Workshop Design / Construction
    Call
  • TPS Builders Limited Logo

    TPS Builders Limited

    10.00

    (14 reviews)

    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Concrete Garages
    Refurbishments
    Partition Walls
    Call
  • S H Construction Logo

    S H Construction

    Be the first to review

    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Warehouse Racking
    Partition Walls
    Basement / Cellar Conversions
    Call
  • Beachwood Carpentry & Building Services Logo

    Beachwood Carpentry & Building Services

    9.97

    (81 reviews)

    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Suspended Ceilings
    Period Property Restoration
    Partition Walls
    Call
  • Haddon Renovations Logo

    Haddon Renovations

    9.94

    (19 reviews)

    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Concrete Garages
    Garage Conversions
    Loft Conversions
    Call
  • RG Carpentry and Building 24 hour locksmith Logo

    RG Carpentry and Building 24 hour locksmith

    9.33

    (53 reviews)

    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Sustainable Construction
    Demolition
    Diamond Drilling
    Call
  • Lodge Farm Developments Logo

    Lodge Farm Developments

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    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Car Ports
    Garage Conversions
    Call
  • Intex Property Ltd Logo

    Intex Property Ltd

    9.33

    (147 reviews)

    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Wall Tie Replacements
    Green Oak Framing
    Repair and Listed Building Specialist
    Call
  • Sampla Construction Ltd Logo

    Sampla Construction Ltd

    9.94

    (55 reviews)

    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Property Maintenance / Repair
    Basement / Cellar Conversions
    New Builds
    Call
  • Square Construction Services Ltd Logo

    Square Construction Services Ltd

    10.00

    (175 reviews)

    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Steel Fabrication
    Basement / Cellar Conversions
    New Builds
    Call
  • Chrysalis Arc Projects LTD Logo

    Chrysalis Arc Projects LTD

    9.89

    (3 reviews)

    Operates in Whittlesey

    Services & skills
    Builder
    Extensions / Conversions
    Partition Walls
    Brick / Concrete Structural Repairs
    Project Management
    Call

Top rated Extensions / Conversions in Whittlesey

10

/10

64 ratings

Our Extensions / Conversions in Whittlesey are rated an average of 10 out of 10 based on a sample of 64 reviews from customers like you*

*This review aggregate is based on real customer reviews from a randomly selected postcode in this area

Conversion and extension builders in Whittlesey

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

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 Whittlesey

Our checked tradespeople in Whittlesey 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 Whittlesey

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

Extensions:

£35702 on average, with prices typically starting at £22203 up to £57936.

Loft conversions:

£37195 on average, with prices typically starting at £24563 up to £57151.

Garage conversions:

£11905 on average, with prices typically starting at £8227 up to £17280.

Conservatory roof conversions:

£8718 on average, with prices typically starting at £6168 up to £12710.

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 Whittlesey: 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 Whittlesey

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

Find the right extension or conversion specialist in Whittlesey

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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