Extensions / Conversions in PO2 (80)

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  • S W E GROUNDWORKS Logo

    S W E GROUNDWORKS

    9.23

    (23 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    Core Drilling
    Fire and Flood Renovation
    Workshop Design / Construction
    Call
  • Coastal renovation group Logo

    Coastal renovation group

    9.93

    (16 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    Property Maintenance / Repair
    Basement / Cellar Conversions
    Brick / Concrete Structural Repairs
    Call
  • Buildtonic Ltd Logo

    Buildtonic Ltd

    9.89

    (14 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    Equestrian Stable
    Mastic Sealant
    General Building
    Call
  • W D O'Neill Builder Limited Logo

    W D O'Neill Builder Limited

    9.89

    (87 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    Concreting
    General Building
    Refurbishments
    Call
  • CDW Building Services Ltd Logo

    CDW Building Services Ltd

    10.00

    (168 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    Property Maintenance / Repair
    Insurance Claim Specialist
    Tree Houses
    Call
  • Perdue Property Services Limited Logo

    Perdue Property Services Limited

    10.00

    (18 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    Mastic Sealant
    General Building
    Garden Studios
    Call
  • ADDY HOME IMPROVEMENTS LTD Logo

    ADDY HOME IMPROVEMENTS LTD

    8.96

    (27 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    Basement / Cellar Conversions
    Equestrian Stable
    General Building
    Call
  • GRL Building Services Ltd Logo

    GRL Building Services Ltd

    10.00

    (160 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    General Building
    Equestrian Stable
    Concreting
    Call
  • WSDL Home Improvements Logo

    WSDL Home Improvements

    9.98

    (43 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    Cladding
    Refurbishments
    Loft Conversions
    Call
  • H Meadows Building Services

    10.00

    (143 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    Partition Walls
    Cladding
    Core Drilling
    Call
  • Vision Build Maintain Ltd Logo

    Vision Build Maintain Ltd

    9.92

    (27 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    Project Management
    Garage Conversions
    Structural Steels
    Call
  • Abacus Roofing and Building Logo

    Abacus Roofing and Building

    10.00

    (35 reviews)

    Operates in PO2

    Services & skills
    Builder
    Extensions / Conversions
    Period Property Restoration
    Repair and Listed Building Specialist
    Foundations
    Call

Conversion and extension builders in PO2

Planning a loft conversion, garage makeover or full house extension in PO2? 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 PO2

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 PO2

Our checked tradespeople in PO2 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 PO2

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

Extensions:

£36363 on average, with prices typically starting at £21034 up to £60872.

Loft conversions:

£37346 on average, with prices typically starting at £23540 up to £58094.

Garage conversions:

£11075 on average, with prices typically starting at £7322 up to £16880.

Conservatory roof conversions:

£7981 on average, with prices typically starting at £5308 up to £11927.

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 PO2: 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 PO2

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 PO2? Enter your postcode or post a job to find emergency services in your area.

Find the right extension or conversion specialist in PO2

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


Looking for more tradespeople in PO2?

Find Checkatrade reviewed Tradespeople, get a quote today, discover related services in PO2 and check out our latest home improvement guides.