Find

Extensions / Conversions in Brighton And Hove (116)

Search results

Describe your job

Give us the details of your job and we'll send it to specialist trades for you

Priced services

Get your job done faster by booking it in

  • More priced services coming soon

  • Sponsored
    Prek Building Services Ltd Logo

    Prek Building Services Ltd

    10.00

    (35 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    Suspended Ceilings
    Demolition
    Partition Walls
    Call
  • Refurb and Construct Logo

    Refurb and Construct

    9.78

    (7 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Garage Conversions
    Refurbishments
    Call
  • BRIGHTON WOODEN IT BE NICE LIMITED Logo

    BRIGHTON WOODEN IT BE NICE LIMITED

    9.63

    (197 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    Basement / Cellar Conversions
    Mastic Sealant
    Workshop Design / Construction
    Call
  • Stoneway Construction LTD Logo

    Stoneway Construction LTD

    10.00

    (14 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Foundations
    Garden Studios
    Call
  • Fine Art Decorating Ltd Logo

    Fine Art Decorating Ltd

    9.98

    (110 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    Demolition
    Core Drilling
    Refurbishments
    Call
  • Moore Trades Logo

    Moore Trades

    9.93

    (84 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Concreting
    Foundations
    Call
  • Middleton&Hewitt Builders Logo

    Middleton&Hewitt Builders

    9.96

    (8 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    Concrete Garages
    Garden Studios
    Concreting
    Call
  • Barrie Pacy Builders

    10.00

    (404 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    Partition Walls
    Refurbishments
    Garage Conversions
    Call
  • MA Construction Brighton Ltd Logo

    MA Construction Brighton Ltd

    10.00

    (129 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    Brick / Concrete Structural Repairs
    Repair and Listed Building Specialist
    General Building
    Call
  • Sussex Stronghold Logo

    Sussex Stronghold

    9.92

    (8 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    General Building
    Partition Walls
    Concrete Garages
    Call
  • Rad Developments Logo

    Rad Developments

    10.00

    (20 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Loft Conversions
    Structural Steels
    Call
  • 9 Carpentry Limited Logo

    9 Carpentry Limited

    9.94

    (39 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Extensions / Conversions
    Cladding
    Basement / Cellar Conversions
    General Building
    Call

Conversion and extension builders in Brighton And Hove

Planning a loft conversion, garage makeover or full house extension in Brighton And Hove? 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 Brighton And Hove

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 Brighton And Hove

Our checked tradespeople in Brighton And Hove 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 Brighton And Hove

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

Extensions:

[pricing[1].Brighton And Hove.[House Extension Building].[averagePriceFormatted]] on average, with prices typically starting at [pricing[1].Brighton And Hove.[House Extension Building].[lowPriceFormatted]] up to [pricing[1].Brighton And Hove.[House Extension Building].[highPriceFormatted]].

Loft conversions:

[pricing[2].Brighton And Hove.[Loft Conversion Building].[averagePriceFormatted]] on average, with prices typically starting at [pricing[2].Brighton And Hove.[Loft Conversion Building].[lowPriceFormatted]] up to [pricing[2].Brighton And Hove.[Loft Conversion Building].[highPriceFormatted]].

Garage conversions:

[pricing[3].Brighton And Hove.[Garage Conversions Building].[averagePriceFormatted]] on average, with prices typically starting at [pricing[3].Brighton And Hove.[Garage Conversions Building].[lowPriceFormatted]] up to [pricing[3].Brighton And Hove.[Garage Conversions Building].[highPriceFormatted]].

Conservatory roof conversions:

[pricing[4].Brighton And Hove.[Conservatory Roof Conversions].[averagePriceFormatted]] on average, with prices typically starting at [pricing[4].Brighton And Hove.[Conservatory Roof Conversions].[lowPriceFormatted]] up to [pricing[4].Brighton And Hove.[Conservatory Roof Conversions].[highPriceFormatted]].

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 Brighton And Hove: 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 Brighton And Hove

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

Find the right extension or conversion specialist in Brighton And Hove

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 Brighton and Hove?

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