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Sussex extension builders

Find extension builders across Sussex

Find Sussex extension builders for rear extensions, side returns, garage conversions, single-storey extensions and home expansion projects.

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

Common jobs for extension builders

  • Rear extensions
  • Side extensions
  • Single-storey extensions
  • Garage conversions
  • Kitchen extensions
  • Structural openings
  • Foundations
  • Shell builds
  • Knock-throughs

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 check before hiring

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

Questions to ask before booking

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

What affects the cost?

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

Safety note

Extensions involve structural and regulatory issues. Homeowners should use appropriate professional advice where required.

View listed extension builders

3 listed trades

Related Sussex trades

Extension Builders — questions homeowners ask