Design & build main contractors in the UK

5282 UK main contractors offering design & build work.

• O OHMG Newry · Main contractor

  OHMG Ltd is a leading construction contractor and property developer across the UK and Ireland, committed to delivering infrastructure services and co

• 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 OL and Edward Ltd London · Refurbishment · 1-9 employees

  Design-led home renovation, kitchen fitting, bathroom renovation, loft conversions and full refurbishment services across London. Fully insured, accre

• O Old Bucks Developments Old Buckenham · House builder · 1-9 employees

  Old Bucks Developments design and build small developments of luxury homes, from new builds to redevelopments, within the Norfolk & Suffolk area.

• 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 Oliva Contracts Colchester · Design & build · 1-9 employees

  Oliva Contracts is a specialist builder and construction contractor working across multiple sectors delivering both Residential and Commercial Constru

• O Oliver Building Services Ltd Hatfield · Main contractor · 1-9 employees

  Oliver Building Services Ltd offers new builds, property extensions, loft conversions, home offices, garage conversions, and general building services

• O Oliveti Group Leicester · Main contractor · 10-49 employees

  Oliveti Group is a leading construction, maintenance, and refurbishment company with over 30 years of experience, delivering seamless projects and cul

• 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 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 Om Barker Builders Ltd Bagshot · Extensions

  OM Barker Builders Ltd is an experienced building company undertaking house extensions, garage conversions and more in Bagshot, Bracknell and the surr

• O Omikon Construction Ltd London · Design & build

  Omikon Construction Limited is a London-based construction company offering quality, reliable, and sustainable services. We combine innovation and exp

• O Omni Co. (Trading) Ltd Deal · Main contractor

  Omni Co. is a multi-disciplinary construction company with specialist divisions in Construction, Engineered Timber, and Joinery, offering a complete s

• O Onsite Developments Design & Construction Ltd Wallington · Design & build · 1-9 employees

  Onsite Developments Design & Construction Ltd is a fast-growing construction, design and development business with 25 years of experience. We undertak

• 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 Opek Home Ltd. London · Refurbishment · 1-9 employees

  London based Architecture, Construction & Supply company specialising in Conversions, Extensions and New Builds for Private and Commercial sectors.

• O Open Exhibitions Ltd Warwick · Design & build · 1-9 employees

  Creative Exhibition Design & Build. We design, build, and project manage bespoke exhibition stands and event environments for brands across the UK and

• O Open Space Concepts Ltd Crewe · Design & build

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

• O Opta Service Ltd Croydon · Fit-out & interiors · 1-9 employees

  Opta Service is a London-based facilities management company specialising in construction, maintenance, and office relocations for commercial clients.

• O Optic Homes Ltd Northampton · Property developer

  Optic Homes builds, restores and develops residential property across the UK, and delivers turn-key project management for developers and investors.

• O Optimum Structures Ltd Guildford · Modular & offsite construction

  Optimum Structures is the exclusive UK partner for DBS Engineering, supplying and installing pre-engineered air supported and frame buildings across t

• 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 Opulent Outdoor Living Ltd Wrexham · Design & build

  Discover luxury and comfort with Opulent Outdoor Living. Elevate your outdoor lifestyle with quality and style.

• O Opus Property Ltd Bristol · Main contractor · 1-9 employees

  Opus Property Ltd offers end-to-end client experience for commercial and residential projects, including new construction, repairs, and restorations.

• O Opus4 Manchester · Design & build · 10-49 employees

  Helping UK businesses transform culture and realise long-term growth with strategic, people-focused office design and fitout for commercial workspaces

• O Orama Group Ltd. Cockfosters · Design & build

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

• O Orange Construction (UK) Ltd Ashford · Main contractor · 1-9 employees

  Orange Construction UK Ltd. offers high-quality construction, refurbishment, and landscaping services for residential and commercial buildings, delive

• O Orange Electrical Contractors Ltd Walsall · Electrical

  Trusted West Midlands electrical contractors delivering innovative design and build solutions for commercial and residential projects. Reliable, effic

• 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 Orange Projects Ltd Crawley · Fit-out & interiors · 1-9 employees

  Orange Projects offers bespoke commercial fit-outs and office refurbishments across London and England, founded in 2008. Specialising in partitioning,

• O Orbro Pools Ltd Pulborough · Swimming pools

  Orbro POOLS create award winning swimming pools | Professional and experienced swimming pool builders and landscapers in the South East | DIY Self Bui

• 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 Origin Pools Ltd Old Hatfield · Swimming pools

  Origin Pools creates bespoke indoor swimming pools for your home. Relax in a luxurious pool designed and built to the highest standards by our experts

• O Original Landscapes Ltd Sherborne · Landscaping

  Original Landscapes specialises in the design and build of award-winning landscaped and bespoke planting schemes for gardens throughout Dorset, Wiltsh

• 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 Orion Atlantic Ltd Manchester · Refurbishment · 1-9 employees

  Orion Atlantic UK is a property investment, development, and construction company delivering high-quality spaces built for modern living and long-term

• O Orkney Builders (Contractors) Ltd Kirkwall · Main contractor · 50-249 employees

  Orkney Builders (Contractors) Limited is a long-established company providing professional and reliable services across all types of construction work

• O Orostream International Contracts Ltd East Sussex · Main contractor · 10-49 employees

  Global specialists in secure environment construction, fit-out & refurbishment. Over 40 years of experience providing specialised building solutions t

• 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 Orwell Homes Ipswich · House builder

  Orwell Homes Limited is a development company that designs and builds quality homes for sale, with profits gifted to Orwell Housing Association to sup

• O Osborn Construction Ltd Uckfield · Main contractor · 1-9 employees

  Osborn Construction offers comprehensive, top-quality construction services for residential and commercial projects. Our experienced team handles ever

• 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 Oti Design And Build Ltd Loughborough · Design & build · 1-9 employees

  OTI Design and Build is a dynamic building company with over 20 years of experience in domestic and commercial property development, offering a full r

• O Otisbum Ltd Sunderland · Main contractor

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

• O Otterburn Construction Ltd London · Refurbishment · 1-9 employees

  Otterburn Construction provide exceptional construction services, with a skilled and experienced team committed to delivering results that exceed expe

• O Our Mep Co. Ltd Fareham · M&E contracting

  Expert MEP design, installation & maintenance in Hampshire. Delivering quality, efficiency & energy-saving solutions for your building project. Get in

• O Our Space Ltd Waterlooville · Main contractor · 1-9 employees

  Our Space Ltd is a trusted main contractor for construction, groundworks & landscaping for homeowners and the public sector across Hampshire.