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Extensions / Conversions in Winnersh (129)

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  • EXELIXIS PROPERTY SERVICES LTD Logo

    EXELIXIS PROPERTY SERVICES LTD

    8.11

    (208 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    Suspended Ceilings
    Equestrian Stable
    Fire and Flood Renovation
    Call
  • Gomm Developments Logo

    Gomm Developments

    10.00

    (11 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    Suspended Ceilings
    Cladding
    Refurbishments
    Call
  • Colours of Integrity Limited Logo

    Colours of Integrity Limited

    10.00

    (140 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    Sustainable Construction
    Car Ports
    Garden Studios
    Call
  • Cheney Construction Logo

    Cheney Construction

    9.91

    (34 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Foundations
    Garage Conversions
    Call
  • Tatla Development Ltd Logo

    Tatla Development Ltd

    10.00

    (34 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Garage Conversions
    Loft Conversions
    Call
  • NEN Building Services Logo

    NEN Building Services

    10.00

    (97 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    Repair and Listed Building Specialist
    Cladding
    Mastic Sealant
    Call
  • Carpentry & Construction Services Logo

    Carpentry & Construction Services

    9.44

    (6 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    Project Management
    Garden Studios
    Cladding
    Call
  • TACMAN DEVELOPERS LTD Logo

    TACMAN DEVELOPERS LTD

    10.00

    (5 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    Foundations
    Property Maintenance / Repair
    Refurbishments
    Call
  • DHA Building & Services Ltd

    9.81

    (49 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    Brick / Concrete Structural Repairs
    General Building
    Refurbishments
    Call
  • BTB Sky Builders Limited

    9.56

    (3 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    Demolition
    Foundations
    Core Drilling
    Call
  • AK Builders Logo

    AK Builders

    9.83

    (60 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    Concreting
    Loft Conversions
    Foundations
    Call
  • CS Full House Services Ltd Logo

    CS Full House Services Ltd

    9.73

    (66 reviews)

    Operates in Winnersh

    Services & skills
    Builder
    Extensions / Conversions
    Mastic Sealant
    Concreting
    Fire and Flood Renovation
    Call

Conversion and extension builders in Winnersh

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

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 Winnersh

Our checked tradespeople in Winnersh 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 Winnersh: 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 Winnersh

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

Find the right extension or conversion specialist in Winnersh

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 Winnersh?

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