Accelerated House Block Project

England, UK
Appointed by: Alliance Team (formed of Kier, Wates, LOR and ISG)
Soben provided detailed bills of quantities to the client, on the expansion of various prison estates across the UK.

Key statistics

£500 million 

Value (approx)




Project Year

Complex project, comprehensive approach

The first of its kind in the UK, the Accelerated House Block Programme was delivered as a collaborative approach, with four of the UK’s largest contractors working in partnership. Soben delivered detailed bills of quantities during the Pre-Construction Services Agreements (PCSAs) period. Soben carried out a forensic review of the design, identified gaps and highlighted discrepancies in the design which resulted in an overall cost reduction on the project. 

This complex programme was part of the Ministry of Justice’s (MOJ) programme to expand the capacity of the prison estate. The project involved expanding existing prison sites to assist in meeting government targets. 


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For every £1 invested in us to date, we can demonstrate a 10x return on that investment through added value, cost savings or cost avoidance for our clients.


Our experienced consultants have worked at the sharp end of contracting, commercially managing complex projects.


We only hire the best to deliver world-class cost, time and quality outcomes. All of our Managers have previous senior leadership experience within large contracting organisations.

Delivering on our promises

Delivered on a live operational site, Soben provided accurate Bills of Quantities. Using our Cost X Software, the team were able to provide clarity to the delivery partners. By challenging whole life costs, embodied carbon, circular principles and focusing on maximising the societal benefit of this significant capital expenditure Soben identified opportunities for significant cost reductions.  

Where culture meets quality

We understand the complexity of major infrastructure projects, the need to manage expectations of multiple stakeholders. Our infrastructure expertise is focused on delivering efficient, cost effective, and future-proofed results. 

Soben offers something different – a combination of the best consultancy practices, with real-life hands-on commercial experience in delivering major construction projects. 

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