Our client is looking for an Interim QS to provide additional commercial capacity and technical cost assurance across planned and responsive workstreams delivered through strategic partner contracts. The Interim Quantity Surveyor will support the Commercial Manager in strengthening cost control, valuation processes, change management and commercial governance across live programmes and contracts. Client Details A social housing provider in Cornwall, managing and maintaining homes on behalf of Cornwall Council and delivering high quality housing services to communities across the county. We are committed to providing safe, sustainable, and affordable homes while driving value for money and commercial excellence. Description Establish robust commercial oversight of live planned and responsive contracts. Validate and challenge contractor valuations, applications and variation submissions. Improve cost forecasting accuracy across capital and revenue workstreams. Strengthen change control and commercial governance processes. Support the Commercial Manager with clear, executive-ready financial reporting. Scrutinise contractor applications for payment, ensuring accuracy and evidential compliance. Assess and negotiate variations and compensation events in accordance with contract conditions. Provide independent cost advice on planned investment and major workstreams. Support procurement exercises with pricing evaluation and cost modellin...