Extensions / Conversions in Thame And Chinnor (50)

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  • Day2Day Building & Renovations Logo

    Day2Day Building & Renovations

    10.00

    (16 reviews)

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    General Building
    Garage Conversions
    Garden Studios
    Call
  • Property Renovation Solutions Logo

    Property Renovation Solutions

    9.04

    (125 reviews)

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    Structural Steels
    Heritage Property Specialist
    Period Property Restoration
    Call
  • Simpson Decorating & Construction Logo

    Simpson Decorating & Construction

    9.80

    (144 reviews)

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    Agricultural Building
    Fire and Flood Renovation
    Workshop Design / Construction
    Call
  • Judge Building Services - J.B.S Logo

    Judge Building Services - J.B.S

    Be the first to review

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    Brick / Concrete Structural Repairs
    Agricultural Building
    Foundations
    Call
  • Liv Construction LTD Logo

    Liv Construction LTD

    9.90

    (76 reviews)

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    Agricultural Building
    Mastic Sealant
    Sustainable Construction
    Call
  • Balaton Construction Ltd Logo

    Balaton Construction Ltd

    10.00

    (1 review)

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    Car Ports
    Concrete Garages
    Concreting
    Call
  • GDS CONSTRUCTION LIMITED Logo

    GDS CONSTRUCTION LIMITED

    9.78

    (25 reviews)

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Loft Conversions
    Sustainable Construction
    Call
  • JMCK Builders Limited Logo

    JMCK Builders Limited

    9.61

    (18 reviews)

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    Building Merchants
    Concrete Garages
    Tree Houses
    Call
  • M S Thind Logo

    M S Thind

    9.89

    (37 reviews)

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    Period Property Restoration
    Garage Conversions
    New Builds
    Call
  • Hill Contractors Ltd Logo

    Hill Contractors Ltd

    10.00

    (50 reviews)

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    Concreting
    Suspended Ceilings
    Loft Conversions
    Call
  • Poole Property Services Ltd Logo

    Poole Property Services Ltd

    10.00

    (90 reviews)

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    Concreting
    Garden Studios
    Period Property Restoration
    Call
  • NH Building and Carpentry Ltd Logo

    NH Building and Carpentry Ltd

    10.00

    (81 reviews)

    Operates in Thame And Chinnor

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Structural Steels
    Steel Fabrication
    Call

Top rated Extensions / Conversions in Thame And Chinnor

10

/10

74 ratings

Our Extensions / Conversions in Thame And Chinnor are rated an average of 10 out of 10 based on a sample of 74 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 Thame And Chinnor

Planning a loft conversion, garage makeover or full house extension in Thame And Chinnor? 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 Thame And Chinnor

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 Thame And Chinnor

Our checked tradespeople in Thame And Chinnor 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 Thame And Chinnor

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

Extensions:

£32709 on average, with prices typically starting at £20085 up to £52106.

Loft conversions:

£35928 on average, with prices typically starting at £23495 up to £54370.

Garage conversions:

£11307 on average, with prices typically starting at £7931 up to £16168.

Conservatory roof conversions:

£8088 on average, with prices typically starting at £5783 up to £11360.

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 Thame And Chinnor: 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 Thame And Chinnor

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 Thame And Chinnor? Enter your postcode or post a job to find emergency services in your area.

Find the right extension or conversion specialist in Thame And Chinnor

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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