Groundbreaking infrastructure

Mackoy provide high quality groundworks infrastructure and civil engineering services to the UK's leading house builders in the South of England.

From those first foundations to the final adoptions, we undertake all aspects of essential groundworks to service large-scale building projects in Hampshire, Dorset, Sussex, Surrey, Berkshire, and beyond.

Unless you're driving one of our dumpers there's no sitting down in our gangs.

Get a load of what we can do.

Every day our groundworks operatives use powerful excavation plant to muckaway and move thousands of cubic tonnes of earth for our clients. Helping to create the essential infrastructure that gets new residential developments off the ground in Britain.


What We Do

Groundworks Operative working on sub-structure birckwork for Mackoy Groundworks


From clearing a site of its topsoil layer to setting out the foundations that will one-day hold an entire new home, our groundworkers balance powerful excavation works with complex technical processes. Delivering the vital infrastructure and earthworks that make our clients' developments possible.

Civil Engineering Plans for Mackoy Groundworks Project

Civil Engineering

From ensuring your project can be delivered to time and to budget, to providing the complex calculations that determine how the construction can be made mechanically sound. Civil engineers use their environmental and structural expertise to bring a building to life.

Earthworks digger mound reduction for Mackoy Groundworks


The first step in any new development, our earthworks prepare the ground for excavation. Stripping away the topsoil, clearing the site of vegetation, removing excess earth (muckaway) and levelling out any unevenness (cut & fill) to make way for groundbreaking to begin.

Foundations poured by digger for Mackoy Groundworks supervised by groundworks operatives


Foundations are the cornerstone of any manmade structure, grounding the building to the floor for stability and strength. Our foundation excavations follow technical specs to a T. Taking trenches to the correct depths and avoiding collapse and infill.


Who are Mackoy?

We're giving groundworks a new name - ours.

Since 2011 Mackoy has undertaken specialist groundworks infrastructure contracts for development projects throughout Hampshire and the surrounding regions. Today our family-owned business works with over 300 operatives in multiple counties across the South of England. Partnering with the UK's leading house builders to deliver new housing schemes in key geographical locations.

About Us

Mike Mayock Mackoy Groundworks and Civil Engineering Chief Executive Officer

Working With Mackoy

Our operatives take pride in the work they produce.

Quality underpins everything we do at Mackoy and we expect nothing less of those that join our gangs. If you're looking to advance your career in groundworks or civil engineering take a look at our current openings.



I have worked closely with Mackoy on many contracts in the past. Value Engineering, Due Diligence and Site set ups have been very helpful to get new projects set up properly in the early stages”

Ian Beal

Managing Director
- Dandara

Mackoy have produced very high standards of work and productivity Over the years, even when deadlines are tight they are always there to help and meet these requests....a backbone to our annual targets’”

Bellway Mackoy Groundworks and Civil Engineering Client logo

Nick Furner

Head of Construction
- Bellway Homes


our news

Groundworks Operative shovelling earth aside

01 February 2019

CSCS: What it is and why it's important - our groundworks accreditations explained

From endorsements of our quality workmanship, to recognition of the stringent health and safety procedures we put into effect on each of our clients' work sites, you only have to scroll down to the Accreditations entries on our website's homepage, to see the many industry accolades and awards we've won at Mackoy Ltd.

Site of the Month award held by Groundworks Foreman on front of blue container

30 January 2019

Mackoy's Site Award Winners: November & December 2018

We've started 2019 in much the same way we exited 2018, hard at work on multiple groundworks contracts for our house builder clients. But before we bid farewell to last year and all the great things we achieved at Mackoy Ltd.

Mackoy Plant Machinery orange Excavator digging on site for new Bellway Contract in Fair Oak near Eastleigh

14 January 2019

Mackoy breaks ground on £1.6 million contract for Bellway in Hampshire

Only days into 2019, our groundworks operatives are already hard at work helping to bring 34 new residential homes to Hampshire for Bellway Wessex.

Get in Touch

We're happy to provide advice or tender for our groundworks and civil engineering services. If you have a South-based development project in need of a groundworks contractor contact us today to see how we can help.

Message us
Your Details


Unit 10, Monks Brook Ind. Park
School Close
Chandlers Ford
S053 4RA


02380 767166


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We're a fully accredited groundworks contractor. Endorsed by construction's leading associations and regulatory bodies for our exemplary workmanship and safe practice on site. We successfully renew our accreditations annually.

Mackoy Groundworks Accreditation NHBC Logo
Mackoy Groundworks Accreditation Constructionline Logo
Mackoy Groundworks Accreditation smas Logo
Mackoy Groundworks Accreditation SSIP Logo
Mackoy Groundworks Accreditation CPCS Logo
Mackoy Groundworks Accreditation CSCS Logo
Mackoy Groundworks Accreditation CQMS Safety Scheme Logo
Mackoy Groundworks Accreditation smas worksafe contractor Logo
Mackoy Groundworks Accreditations Safemark Logo
Mackoy Groundworks Accreditation Chas Logo

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