Commercial Buildings

ATJ Building & Groundworks work extensively with commercial clients offering a professional, reliable service, which our regular customers have come to depend upon. We undertake a wide variety of contract building projects and work closely with our clients to ensure we fulfill their expectations and offer tailor-made solutions. Based out of Northampton, we are centrally located so no distance is too far to travel.

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Commercial Property Maintence & Refurbishments - End of Tenancy Repairs / Delapidation Repairs 

Alongside our expertise in building refurbishment, restoration and property maintenance repair we also offer a comprehensive service to Building Surveyors, Quantity Surveyors, Architects, Project Managers, Housing Associations, National and Local Government Authorities and property professionals.

From minor cosmetic repair to full factory and office strip out and renovation, we aim to achieve total customer satisfaction with a professional, reliable service and exceptional levels of workmanship.

In addition to the core trades highlighted on this site we also undertake the following:
  • Delapidation Repairs
  • Fire & Flood Damage
  • Impact damage 
  • Factory and office strip out and renovation
  • Mezzanine floor and racking dismantling 
  • Barrier and hand rail installation and repairs
  • Paving, concrete & curb repairs
  • Drain / ducts & manhole insulations repairs and cleaning

If you have any special requirements please do not hesitate to contact us. We strive to provide a tailor-made service for all of our clients, whatever their requirements.




We undertake all manner of building work, from alterations and extensions to renovations. Whether it’s a business property or facility requiring development due to growth or modernisation due to health and safety regulations, we can provide a bespoke solution ensuring minimal disruption and value for money.

  • New Builds
  • Extensions
  • Alterations
  • Renovations
  • Conversions
  • Building work to accommodate plant & machinery


Disabled & Mobility Adaptations


Following new legislation making it a legal requirement to take measures to allow disabled access to commercial and public premises, we have been carrying out more and more of this type of work. Expertise in this area is sought by many of our clients and the most common adjustments include the following:

  • Construction of ramps
  • Installation of hand or grab rails
  • Widening opening
  • Forming "Wet rooms"
  • Installing Dissabled W.C's




Much of our alteration work involves supporting upper floors and often, entire buildings.

This is an area we excel in due to our extensive experience and one project to note is the Latimer and Crick building in Northampton. This project involved supporting a 3-storey building whilst installing steels to allow the ground floor walls to be taken out for underground parking.

Other alteration work includes:

  • New Openings
  • Steel insulations
  • Chimney breast removal




Underpinning is required when a building is subsiding or suffering from ground heave. Underpinning can also be used to enable basement construction by adding depth to the building’s original footings.

The success of any underpinning project is determined by the contractors carrying out the work. In most cases, once the work is completed it is back-filled again within a few days, so it is imperative the work is undertaken by a competent, trustworthy contractor.

ATJ Building and Groundworks guarantee all work is undertaken by highly trained and experienced staff who are fully supervised to ensure our high level of workmanship is maintained.

We mostly undertake traditionally excavated underpinning but can work to any engineer's drawings.


Drainage & Ducts

We undertake all drain, duct and mains services work, from installing new soakaways to digging and laying all services in and out of small to medium size developments.

  • New drain runs & manholes
  • Drain & manhole repairs
  • Soakaways
  • Ducts laid & repaired
  • Mains services and ducts laid
  • GPO boxes built