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Flat roof extension cost in SG13

A flat roof extension is a great way to add extra space to your home without splashing out on the costs of a pitched roof extension. Often exempt from planning permission rules, you can build a flat roof extension up to 3 metres in height as long as it's not visible from a road. But how much do they cost in SG13?

A flat roof extension ranges from the cheapest of £21816 (J B R Contracts based in SG14) to the dearest of £23000 (PDS Group Ltd based in EN10), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes. 

Find out how much your flat roof extension will cost in SG13 by posting a job with HaMuch. We'll send it to extension builders in SG13.

Estimates for flat roof extension near SG13
  • How much does a flat roof extension cost?
  • Flat roof extension cost per m2
  • Factors affecting the cost of flat roof extensions
  • Advantages and disadvantages of flat roofs
  • Which is cheaper: a flat roof or pitched roof?
  • How long does a flat roof extension take?
  • Do you need planning permission for a flat roof extension?
  • How long does a flat roof last?
  • Can you walk on a flat roof extension?
  • What insulation do I need for a flat roof extension?

  • Estimates for common extension builder jobs in SG13;



    Rates for other SG13 trades

    Extension Builders in SG13
    Estimate Flat roof extension cost in SG13 based on hourly/daily rate (excluding VAT or callout charges)
    Business name Flat roof extension cost
    Unico Developments, Hertfordshire, SG14 £21952
    Aspect Construct and Carpentry Ltd, Hertfordshire, SG13 £21952
    Oakridge Construction Limited, , SG14 £21872
    J B R Contracts, 38 Norwood Close, Hertford, Hertfordshir, SG14 £21816
    Chelsfield Solar, Van Hage Garden Centre, Pepper Hill, Gre, SG12 £21832
    Landmark General Builders Ltd, Ware, SG12 £21832
    D E BRACKEN BUILDING SERVICES, , EN11 £21880
    TJJ Construction Ltd, Hoddesdon, EN11 £21872
    Chris Osullivan Brickwork, Ware, SG12 £21920
    RECESS CONSTRUCTION LTD, , EN11 £21880
    Hopson Bros Services, , EN11 £21880
    T&R Builders Ltd, Hoddesdon, EN11 £21824
    Atlas Facilities Services Limited, Hoddesdon, EN11 £22800
    Caudle Developments Ltd, 103 St Margarets Road, Stanstead Abbotts, Hertfordshire, SG12 £21824
    caudle developments ltd, Hertfordshire, sg12 £21952
    Jarman Tew Design Ltd, Hoddesdon, Hertfordshire, EN11 £21832
    T&R Builders Ltd, Hertfordshire, EN11 £21952
    Nicholas James Home Improvements Ltd, 12 Chelsea Fields, Hoddesdon, Hertfordsh, EN11 £21816
    M J S BUILDERS T/A, , EN11 £21872
    BLERIOT CONSTRUCTION LTD, , EN10 £21872
    Donema Construction Vision Ltd, Hertfordshire, EN11 £21952
    Design and Create Solutions Ltd, Hertfordshire, EN11 £21928
    Bournes Projects LTD, Ware, Hertfordshire, SG12 £21840
    J J Roofing & Gutter Repairs, Hatfield, AL9 £21864
    PDS Group Ltd, Broxbourne, EN10 £23000