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John Sheehan (Oxford) Ltd is a groundwork and civil engineering contractor, specialising in substructure projects, basement conversions and renewable energy engineering.


John Sheehan (Oxford) Limited is highly experienced in all site preparation works.  


We have a first class track record in delivering significant ground works projects on time and on budget. 


John Sheehan (Oxford) Ltd provide comprehensive commercial and residential external works services. 


We are Oxfordshire’s leading reinforced concrete structures contractor.  


We provide full Managed Works services and can act as a Principal Contractor or Sub Contractor on site. 


John Sheehan (Oxford) Ltd specialise in Renewable Energy Engineering.  

Groundworks & Civil Engineering

For more than 40 years we have delivered significant groundwork projects at prestigious locations, including Grade I listed Oxford University buildings and countryside estates.

Our key services include: 

  • Site Preparation
  • Groundworks
  • External works
  • Reinforced concrete structures
  • Managed works

Our joined up and innovative approach to sustainable construction, combined with our knowledge base enables us to deliver exceptional results consistently. Our clients rely on our expertise and high-level problem solving to overcome tough challenges and deliver exceptional results across the South East.

We pride ourselves on our knowledge, attention to detail, engagement with partners and adding value for our clients.

Our services include

• Foundations
• Underpinning
• Temporary Support Works
• Bulk excavation
• Muck away
• Water proofing
• Concrete Box

Our track record in delivering first class groundwork projects are vast and include new build and retrofit projects for residential and commercial basements and Grade I listed buildings. Projects have included works at fine country mansions including Tusmore House in Oxfordshire and the Ingliston House on the Wentworth Estate, Surrey. Plus, major educational institutes including the Said Business School Oxford and Queens College, Oxford University.

Talk to us

If you would like to talk to us about a groundwork project,
call us now on 01865 379931

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Renewable Energy Engineering

Our specialist services also include renewable energy engineering, incorporating biomass and hydroelectricity.

We have acted as Principal Contractor in engineering a variety of reinforced concrete structures associated with renewable energy projects. Projects have included installing a 3.5MW boiler within an existing building which required a reduced floor level along with ancillary concrete drying floors, and a 500kVa Archimedian hydro generation scheme on the Thames.

Often these projects are dependent on renewable energy tariffs and Government incentives, thus have a critical deadline. John Sheehan (Oxford) Ltd have a proven track record in achieving these major engineering projects on time and within budget.