Extend your B23 with an extension

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Flat roof extension cost in B23

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 B23?

A flat roof extension ranges from the cheapest of £21000 (J s building & maintenance services limited based in B26) to the dearest of £22800 (TG Building Services & Son based in B71), 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 B23 by posting a job with HaMuch. We'll send it to extension builders in B23.

Estimates for flat roof extension near B23
  • 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 B23;



    Rates for other B23 trades

    Extension Builders in B23
    Estimate Flat roof extension cost in B23 based on hourly/daily rate (excluding VAT or callout charges)
    Business name Flat roof extension cost
    Parkfield Building Services Ltd, unit 6 chancel way, Birmingham, B6 £21536
    D&J Advanced Builders, Birmingham, B44 £21528
    Sanwood, sutton coldfield, B73 £21760
    itsoktu Limited, West Midlands, B72 £21632
    itsoktu Ltd, While Road, Sutton Coldfield, BIRMINGHAM, West Midlands, B72 £21536
    Probuild360, 1 Phoenix Park, Avenue Rd, Birmingham, West Midlands, B7 £21536
    Renka, Birmingham, West Midlands, B19 £21536
    Low costi builders ltd, Birmingham , B34 £22000
    SELF BUILD, , B75 £21552
    Sas Building Solutions, Honeyborne Road, Birmingham, B75 £21536
    Spectrum Homes, Birmingham, West Midlands, B3 £21536
    BORDO Design, Birmingham, West Midlands, B3 £21544
    All Build Contractors, Birmingham , B75 £21600
    x10hosts, Buckinghamshire, b9 £21616
    G Wilson Building & Roofing Services, Birmingham , B33 £21600
    Mountainview Construction, Neville House, 42-46 Hagley Rd, Birmingham, West Midlands, B16 £21544
    Dayfos Properties Ltd, Suit B Fairgate House, 205 Kings Road, Birmingham, West Midlands, B11 £21536
    Fletchers Building & Maintenance, Ltd., Birmingham , B11 £21600
    A45 Fencing & Landscapes, Birmingham, B26 £21200
    Saxonworld Ltd, Walsall, WS9 £21280
    j s building & maintenance services limited, Birmingham, B26 £21000
    IMAGE BUILDING SERVICES LMT, , B37 £21552
    2nd Generation Building Services, Moseley, Birmingham, West Midlands, B13 £21528
    TG Building Services & Son, West bromwich, B71 £22800
    BORDO Design, West Midlands, B71 £21632