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Extensions / Conversions in New Forest (83)

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  • Sponsored
    M S Thind Logo

    M S Thind

    10.00

    (36 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Repair and Listed Building Specialist
    Workshop Design / Construction
    Refurbishments
    Call
  • Milwalt Property Services Ltd Logo

    Milwalt Property Services Ltd

    9.68

    (18 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Agricultural Building
    Partition Walls
    Project Management
    Call
  • South coast Builders Ltd Logo

    South coast Builders Ltd

    9.67

    (30 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    New Builds
    Call
  • Unique Construction Logo

    Unique Construction

    9.98

    (397 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Garden Studios
    Loft Conversions
    Call
  • Prokil Damp & Timber Specialists Logo

    Prokil Damp & Timber Specialists

    9.01

    (283 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Equestrian Stable
    Wall Tie Replacements
    Loft Conversions
    Call
  • Moore Crest Builders Logo

    Moore Crest Builders

    9.28

    (86 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Garden Studios
    Garage Conversions
    Workshop Design / Construction
    Call
  • Rudix Logo

    Rudix

    9.83

    (4 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Agricultural Building
    Basement / Cellar Conversions
    Partition Walls
    Call
  • Generation Builders & Landscapes Logo

    Generation Builders & Landscapes

    10.00

    (69 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Sustainable Construction
    Project Management
    Suspended Ceilings
    Call
  • MLC BUILDING MAINTENANCE LIMITED Logo

    MLC BUILDING MAINTENANCE LIMITED

    9.96

    (16 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Car Ports
    Demolition
    Concrete Garages
    Call
  • Kitch Building Logo

    Kitch Building

    9.67

    (100 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Insurance Claim Specialist
    Wall Tie Replacements
    Period Property Restoration
    Call
  • Stag Construction LTD Logo

    Stag Construction LTD

    9.96

    (53 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Suspended Ceilings
    New Builds
    General Building
    Call
  • Butler Group Construction Logo

    Butler Group Construction

    9.30

    (21 reviews)

    Operates in New Forest

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Cladding
    Suspended Ceilings
    Call

Conversion and extension builders in New Forest

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

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 New Forest

Our checked tradespeople in New Forest 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 New Forest

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

Extensions:

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Loft conversions:

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Garage conversions:

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Conservatory roof conversions:

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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 New Forest: 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 New Forest

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

Find the right extension or conversion specialist in New Forest

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 New Forest?

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