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Sussex extension builders

Find extension builders across Sussex

Browse extension builders across Sussex for rear extensions, side extensions, single-storey extensions, two-storey extensions, wraparound extensions, kitchen extensions. Check individual profiles to see the services each business offers and the areas they cover, then request a business or post your job on TradeKind.

Extension builders manage larger home projects where structure, foundations, roofing, electrics, plumbing and finishing may all connect.

Extension Builders services

Services can include the following. Individual businesses may offer some rather than all of these, so check the profile for the exact work you need.

  • Rear extensions
  • Side extensions
  • Single-storey extensions
  • Two-storey extensions
  • Wraparound extensions
  • Kitchen extensions
  • Extension foundations and groundworks
  • Extension drainage
  • Structural openings and steelwork coordination
  • Extension shell builds
  • Extension roofing
  • Window and door installation coordination
  • First-fix plumbing and electrical coordination
  • Plastering and internal finishing coordination
  • External finishes and making good
  • Extension project coordination

When to hire an extension builder

  • You want more living space
  • Plans are being prepared
  • You need a builder after drawings
  • Structural work is involved
  • Multiple trades need coordinating

What to include when asking for a quote

  • Describe the exact problem or result you want, including when it started or what you want changed.
  • Add clear photos where they can be taken safely, and include measurements, plans or model details if they are relevant.
  • Give the property location, access or parking constraints, and any deadline or urgency.
  • Say whether you are supplying materials, products or appliances, or want the business to include them.
  • Mention previous repairs, surveys, quotes or known defects that could affect the work.

What to check before hiring an extension builder

  • Similar completed extensions
  • Insurance
  • Building control process
  • Payment schedule
  • Timescale
  • Subcontractors
  • Quote detail

Useful questions to ask an extension builder

  • Have you built similar extensions locally?
  • Do you work from architect drawings?
  • Is building control included?
  • Who manages other trades?
  • What is excluded?
  • Have you completed similar work before?

What can affect the cost of extension work

  • Size
  • Foundations
  • Structural steel
  • Roof type
  • Glazing
  • Finish level
  • Access
  • Drainage
  • Ground conditions

Before the work starts

  • Have drawings and approvals available before pricing where possible.
  • Agree access for deliveries, skips, plant and material storage.
  • Plan how the household will use the property while parts of it are opened up or without services.

View listed extension builders

6 listed trades
  • Total Building & Roofing

    Profile reviewed Founding

    Based in Heathfield · Covers East Sussex

    34 reviews on Yell · rated 5/5

    Extension Builders

    Trusted and trading standards checked also offer insurance backed warranty’s we also take card payments

  • Amco Brighton Limited

    Profile reviewed Founding

    Based in Brighton & Hove · Covers Brighton & Hove, Shoreham-by-Sea, Southwick +1 more

    335 reviews on Checkatrade · rated 5/5

    Extension Builders

    On time and on budget projects.

  • Arbo Projects

    Profile reviewed Founding

    Based in Lancing · Covers Sussex

    No confirmed reviews yet

    Extension Builders

    30 years’ experience in extensions, refurbishments, kitchens, bathrooms and general building.

Browse extension builders by town

Towns where listed businesses are based or provide direct local coverage.

Related Sussex trades

Extension Builders — questions homeowners ask

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