Extensions developers in the UK

3343 UK developers offering extensions work.

• O Obe Building Ltd London · Extensions · 1-9 employees

  OBE Building delivers high-quality home extensions, loft conversions, refurbishments, structural steel and commercial fit-outs with expert project man

• O Obelisk London London · Refurbishment · 10-49 employees

  Obelisk London Limited is a construction company offering expert contracting services in London, specializing in internal renovations, refurbishments,

• O OBG Homes Glasgow · Design & build · 10-49 employees

  OBG Homes are Glasgow's most trusted builder of single storey kitchen extensions. We offer a complete turnkey service for self-build homes, loft conve

• O Ocdon Group Ltd Alfreton · Refurbishment · 1-9 employees

  OCDON GROUP LTD offers loft conversions, kitchen and bathroom renovations, painting, patio and driveway works, and full house refurbishments in Somerc

• O Oceansafe Windows Scarborough Limited Bridlington · Windows & doors · 1-9 employees

  Oceansafe Windows Scarborough Limited offers high-quality UPVC, composite, and aluminium installations for windows, doors, conservatories, and oranger

• O Octo Constructions Ltd Slough · Design & build

  Octo Construction Ltd specialises in construction engineering, offering expertise from design and planning through to all construction work. We have a

• O ODC Glass London · Glazing · 50-249 employees

  ODC Glass specialises in high-quality aluminium bifold and sliding glass doors, windows, roof lights and glazing systems for residential and commercia

• O OFFSITE BASES LIMITED Kingston Upon Thames · Piling · 1-9 employees

  Offsite Bases offers a speedy and sustainable replacement for concrete foundations with innovative Ring Beams and Helical Piles, reducing construction

• O Ogbourne Construction Services Ltd Marlborough · Main contractor · 1-9 employees

  OGBOURNE CONSTRUCTION SERVICES delivers quality residential building and project management from concept to completion with professionalism and reliab

• O Ohmega Construction Abbots Langley · Refurbishment · 1-9 employees

  Ohmega Construction: Your trusted partner in building better homes. Specialising in kitchens, refurbishments, and extensions, we bring your ideas to l

• O Oil Tank Change Newmarket · Utilities · 1-9 employees

  Need an oil tank? Our certified experts provide fast, safe, and affordable oil tank replacement services. Get your free quote today!

• ö öKohaus Cornwall Ltd St. Columb · House builder · 1-9 employees

  Ökohaus Cornwall builds certified Passivhaus and high performance homes using natural and sustainable materials. We work closely with architects from

• O Oldfield Construction (London) Ltd Ruislip · Main contractor · 1-9 employees

  Oldfield Construction Limited offers home improvements in Ruislip. Qualified builders with 51+ years of experience, delivering durability and reliabil

• O Olive Building Ltd Wickford · Main contractor · 1-9 employees

  Olive Building LTD is a reputable building company in Essex, established in 1997, specializing in new builds, extensions, renovations, and conversions

• O Olympia Projects Leeds · Design & build · 1-9 employees

  Olympia Projects Limited is an established, family-run commercial development business, delivering projects throughout the UK with over 55 years of ex

• O OLYMPUS BUILD LTD Dunstable · Main contractor · 1-9 employees

  Olympus Build Ltd offers new builds, extensions, and loft conversions with in-house architects and engineers. They cover Herts, Beds, Bucks, Northampt

• O Olympus Property Development Ltd Manchester · Main contractor

  Premium construction, structural works, renovations and property development across Manchester, Liverpool, Preston and the wider North West. Request a

• O Olympus Property Group Ltd London · House builder · 1-9 employees

  Olympus Property Group offers expert residential construction and surveying services in Hampshire, including new builds, renovations, loft conversions

• O Omega + Group Ltd London · Main contractor · 1-9 employees

  Omega Group is a leading construction and MEP contractor based in West London, delivering high-value projects across residential, commercial, and mixe

• O Omni Construction (Edin) Ltd Edinburgh · Refurbishment

  OMNI CONSTRUCTION (EDIN) LTD offers residential construction, repair, and refurbishment services. Specialising in home improvements, maintenance, and

• O Omniform Ltd London · Main contractor · 1-9 employees

  Omniform is a London construction partner for architect-designed homes: whole-house refurbishments, structural work, basements, and new build properti

• O ON LEVEL CONSTRUCTION Manchester · House builder · 1-9 employees

  On Level Construction is a professional and highly regarded construction company based in Tameside, Manchester. With over 40 years collective experien

• O One Bloomsbury Ltd London · Extensions

  One Bloomsbury is a London-based construction and building company offering bespoke design, construction, and maintenance services for residential and

• O Onny Developments Ltd Craven Arms · Property developer

  Onny Developments Ltd in Craven Arms, Shropshire is a property development company with expertise in Barn Conversions, New Build Property, Commercial

• O Opal Construction (Nw) Ltd Manchester · Main contractor · 1-9 employees

  100% customer satisfaction in the Greater Manchester area. Specialising in building work including extensions, decking, groundwork, staircases, window

• O Open Space Concepts Ltd Stoke-On-Trent · Design & build · 10-49 employees

  Open Space Concepts is the UK's leading designer and installer of bespoke outdoor living structures, transforming gardens into year-round spaces. With

• O Optimal Builders Ltd Grays · Loft conversions · 1-9 employees

  Optimal Builders offers a range of construction services including loft conversions, house extensions, refurbishments, and garden renovations. They fo

• O Optimal Developments Ltd London · Main contractor · 1-9 employees

  Builders in King's Lynn with 36 years on the tools. New builds, extensions and renovations across West Norfolk, all backed by our 12-month snagging gu

• O Optimodo Ltd Hemel Hempstead · Refurbishment

  Optimodo Limited, established in 2009 and based in Hemel Hempstead, offers professional building services in Hertfordshire and surrounding areas. We p

• O Optimum Construction Ltd Yeovil · House builder · 1-9 employees

  Prestigious builder of Impressive Luxury New Houses and Extensions in & around Wokingham, Berkshire. Specialising in large, bespoke houses.

• O Optirooms Service & Construction Southampton · Main contractor

  OptiGroup Holdings Ltd is a UK holding company combining construction (Optirooms), cleaning (OptiClean) and IT & AI systems (OptiSoft).

• O Opulent Construction Ltd Hereford · Main contractor · 1-9 employees

  Experienced builders in Hereford specialising in luxury homes, Passivhaus new builds, extensions, and bespoke renovations. High-end construction with

• O Opus Carpentry Ltd Isle Of Lewis · Kitchen fitting · 1-9 employees

  Opus Carpentry offers kitchen supply and fitting, joinery, extensions, renovations, and construction services on the Isle of Lewis.

• O Orama Group Ltd. Cockfosters · Design & build · 1-9 employees

  Orama Group is the construction company of choice for high end residential and commercial design and development projects.

• O ORANGE LLAMA Cardiff · Design & build · 1-9 employees

  Orange Llama offers design and construction innovation in South Wales, specializing in smart technology integration for dream builds and renovations.

• O Orbit Construction Services Ltd Widnes · Main contractor · 1-9 employees

  Orbit Construction Services Ltd specialises in commercial and domestic construction, offering home extensions, refurbishments, and commercial work lik

• O Orchis London Ltd Farnborough · Main contractor

  Orchis delivers super-prime residential construction across Mayfair, Belgravia, Knightsbridge, Chelsea, and the counties. Director-led building for de

• O ORDERLY LONDON LTD Wokingham · Refurbishment

  Orderly London specialises in design-led renovations, extensions and full refurbishments for period and characterful homes across South West London an

• O Oriole Constructors Ltd. London · Refurbishment · 1-9 employees

  Oriole Constructors Ltd offers quality, time, and cost control in building and construction projects across Bracknell and West London.

• O Orsett Property Development Ltd Chelmsford, Essex · Property developer

  Orsett Property Development is a premier property development company creating exceptional spaces and shaping communities with a passion for innovatio

• O Osborn Design & Build Ltd Colchester · Design & build · 1-9 employees

  Osborn Design & Build offers expert building and design services for new builds, extensions, conversions, and hard landscaping in Essex and beyond. Wi

• O Osn Development Ltd Hayes · Main contractor

  OSN Development Limited is a construction company based in Hayes, England, offering a wide range of expert home improvement and building services. The

• O Otisbum Ltd Sunderland · Main contractor · 1-9 employees

  Otisbum Engineering & Construction Company Ltd offers high-quality building, renovation, maintenance, and engineering solutions for residential, comme

• O Ovadia Construction Ltd London · House builder

  Ovadia Construction Ltd offers extensions, renovations and new builds with expert craftsmanship. Looking for a trusted construction company in the UK?

• O OVERHAUL PROPERTY DEVELOPMENTS LTD Worthing · Refurbishment · 1-9 employees

  Family-run building business established 2007, with over 30 years experience. Specialising in loft conversions, extensions, kitchens, bathrooms, and g

• O Overstones Ltd Congresbury · Design & build · 1-9 employees

  Overstones Ltd - Design & Build specialists based in Congresbury North Somerset. Extensions, roofing, fencing or kitchen/bathroom conversions. We do i

• O Ovk Construction Ltd London · Main contractor · 1-9 employees

  OVK Construction offers Building and Maintenance services: Interior and Exterior renovation, Plumbing and Electrics, Extensions, Loft Conversions and

• O Owen Developments (Worcester) Ltd Malvern · Design & build

  Owen Developments is a family-run building construction company providing design and build services across Worcestershire and Herefordshire. With over

• O Owen Evans Construction Aberystwyth · Main contractor

  Owen Evans Construction offers high-quality building and extension services in Mid-Wales, blending traditional Welsh craftsmanship with modern techniq

• O Owv Developments Ltd Camberley · Extensions

  NHBC registered building and development company in Camberley, Surrey, serving London and Home Counties. Specialising in extensions, new builds, renov