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We are Onyx Contractors, a local specialist in groundworks, landscaping and construction. We manage projects from concept to completion.

About Us

The groundworks represent your project’s first onsite phase, and one of its most important. Find out the services we use to get your job off to the perfect start.

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Retaining Walls

Excavation, laying foundations and bases, levelling, bricklaying and blockwork – our service ticks every box. If needed, we can also use reinforced concrete.

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From piled foundations and raft foundations to strip foundations and trench fill foundations, we install various foundations to meet the requirements of all projects.

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As a trusted building company, our team constructs a range of house extensions to create the additional space you require in your home.

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Our company provides a range of construction services, including refurbishments, renovations, garage conversions and loft conversions.

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Groundworks Contractors in Farnham, Godalming, Guildford and the Surrounding Areas | Construction and Landscaping Services

Welcome to the Onyx Contractors website. Based in Farnham, we are the ideal partner for groundworks, construction and landscaping services in Hampshire, Surrey and West Sussex. This includes key service areas such as Ashtead, Alton, Esher, Farnborough, Guildford, Godalming, Haslemere, Leatherhead, Midhurst and Weybridge. In addition to the services we provide as groundworks contractors, such as foundation installations, our building company specialises in constructing retaining walls, house extensions, renovations and various first-rate building services.

Your home and garden are both special places. If you’re looking to improve or build on your premises, it’s vital to find a company you can trust in every respect. With an experienced team, trusted builders, an extensive range of equipment and an enthusiastic attitude, you can rely on us to deliver your project on time, within budget and to unmatched quality standards.

To see how highly people rate our services, read through our testimonials. You can also view our gallery to see examples of our high-quality workmanship.

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Simple and hassle-free

Eliminate project-related stress by using an experienced and insured company fully vetted to FMB standards. Your job is in safe hands with us.

About Us

Our Services

Onyx Contractors provides the following services:


  • Site Clearances

  • Uplifting Old Surfaces

  • Site Levelling

  • Footings

  • Foundation Installations

  • Retaining Walls

  • Provisions for Drainage and Utilities

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  • Garden Design

  • Hard Landscaping

  • Soft Landscaping

  • Patios and Paving

  • New Driveways

  • Lighting and Irrigation

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  • New Builds

  • House Extensions

  • Swimming Pools

  • Porches and Conservatories

  • Refurbishment and Renovation

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The above lists are far from exhaustive. You can find dedicated pages for the various services we provide as building, landscaping and groundworks contractors on the menu of this website. Please navigate to the relevant one for more information about the work you plan to undertake.

Whatever the nature of your job, Onyx Contractors provides end-to-end project management. Our building company takes the stress and strain out of all your groundwork, landscaping, gardening and construction requirements, freeing up your own time to relax and focus on how you will enjoy the results we create.

We can also arrange visits to previous house extensions, retaining walls, foundation installations and other work we have completed locally to you in or around Guildford, Godalming or Farnham.

About Us

The close-knit team that makes up our company shares over 50 years of trade experience. During this time, we have worked on all manner of private domestic and residential projects, from extensions and new builds to the groundworks that support them. This extends to the soft and hard landscaping services that produce beautiful gardens.

To supplement our expertise, we have also worked hard to attain various industry-leading memberships and qualifications.

Having passed the strict vetting and assessment process, Onyx Contractors is a proud member of the Federation of Master Builders (FMB). Our company is also TrustMark-registered. This is the only government-endorsed scheme for improvement and development work carried out in and around homes.

On an individual level, our building company includes professionals with Gas Safe registration, NICEIC certification as well as City & Guilds and NVQ qualifications.

Professional, friendly, customer-focused and highly skilled – we provide everything you could want from house builders, landscaping and groundworks contractors working at your property. For added peace of mind, the director of our company oversees every project we take on from start to finish.

Onyx Contractors operates in Farnham, Guildford, Godalming, Alton and the surrounding areas with the appropriate amount of employer’s and public liability insurance. We provide guarantees of varying length depending on the services undertaken, with a minimum term of 12 months.


Freddie and his team exceeded my expectations - they fully landscaped what was a previously unloved garden at a house we just purchased. His workmanship is first class and he was happy to suggest different ideas to work to our budget. Freddie was always on the job and was always receptive to my requests. He is easy to work with and I’d highly recommend his service - first class work delivered in a professional way.

Very good quality of work, which was carried out according to plan and within costs stated at outset, allowing for some expansion and variation of the original project. Communication about progress was excellent and the work began when originally scheduled. Site left tidy at the completion of the job.

Very pleased with their work it was professionally undertaken. Workmanship was excellent and they were a good group to work with. I would recommend them highly.

Excellent work by Freddie and his team. Great advices all along. Patience and understanding when we changed our mind. Very pleased with the end result. Highly recommended.

Call 08000 622569 or 07825 185352 to speak with one of our building, landscaping and groundworks contractors. We offer free advice and quotations for work in Farnham, Guildford, Godalming and the neighbouring areas.

TELEPHONE: 0800 0622569
                        07825 185352

BASED IN: Farnham



Onyx Contractors is a proud member of the Federation of Master Builders (FMB). All FMB members must:
Onyx Contractors can offer you a contract on your work and a warranty from FMB Insurance Services, assuring you of a better building experience.