Basement Conversions in Wareham (58)

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  • Sponsored
    Ace Property Restoration Ltd Logo

    Ace Property Restoration Ltd

    10.00

    (90 reviews)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Period Property Restoration
    Refurbishments
    Call
  • Sponsored
    Proevo Group Ltd Logo

    Proevo Group Ltd

    10.00

    (1 review)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    Steel Work Design
    Basement / Cellar Conversions
    Foundations

    Latest verified customer review

    10.0

    “ProEvo are superb who completed an extensive renovation which was almost a rebuild. Their work is of an excellent standard. Their guidance to me as their client was informative and 99% agreed. The other 1% was still delivered with the same commitment. They worked hard…no half days off and even came back much earlier than expected over Christmas. The hard work they put into working and supporting me making timely decisions so that work could continue without delivery pauses meant they finished ahead of schedule. I cannot recommend them enough.”

    Call
  • South coast Builders Ltd Logo

    South coast Builders Ltd

    9.67

    (32 reviews)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Garage Conversions
    Call
  • Sponsored
    DB Huntley Builders Logo

    DB Huntley Builders

    9.89

    (16 reviews)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    Partition Walls
    Brick / Concrete Structural Repairs
    Foundations
    Call
  • Adam Billings Building Services Ltd Logo

    Adam Billings Building Services Ltd

    9.67

    (27 reviews)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Basement / Cellar Conversions
    Concreting
    Call
  • Purbeck Home Improvements & Developers Ltd Logo

    Purbeck Home Improvements & Developers Ltd

    9.90

    (289 reviews)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Property Maintenance / Repair
    Suspended Ceilings
    Call
  • HD Kitchens & Developments Logo

    HD Kitchens & Developments

    9.97

    (109 reviews)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    Emergency Builder Service
    General Building
    New Builds
    Call
  • STS Brickwork Limited Logo

    STS Brickwork Limited

    9.92

    (81 reviews)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Wall Tie Replacements
    Garage Conversions
    Call
  • Confidence Group Southern Ltd Logo

    Confidence Group Southern Ltd

    10.00

    (75 reviews)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Car Ports
    Warehouse Racking
    Call
  • Dorset Building & Landscaping Ltd Logo

    Dorset Building & Landscaping Ltd

    9.95

    (71 reviews)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    Wall Tie Replacements
    Brick / Concrete Structural Repairs
    Sustainable Construction
    Call
  • Phil Lavender Building Contractor

    9.67

    (64 reviews)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    Project Management
    General Building
    New Builds
    Call
  • CJI Building and Plastering Logo

    CJI Building and Plastering

    10.00

    (58 reviews)

    Operates in Wareham

    Services & skills
    Builder
    Extensions / Conversions
    Steel Fabrication
    Garage Conversions
    Period Property Restoration
    Call

Top rated Basement Conversions in Wareham

10

/10

71 ratings

Our Basement Conversions in Wareham are rated an average of 10 out of 10 based on a sample of 71 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 Wareham

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

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 Wareham

Our checked tradespeople in Wareham 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 Wareham

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

Extensions:

£36882 on average, with prices typically starting at £23612 up to £57427.

Loft conversions:

£40094 on average, with prices typically starting at £27331 up to £57937.

Garage conversions:

£11815 on average, with prices typically starting at £8366 up to £16687.

Conservatory roof conversions:

£8560 on average, with prices typically starting at £6006 up to £12273.

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 Wareham: 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 Wareham

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

Find the right extension or conversion specialist in Wareham

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 Wareham?

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