Castell Construction Case Study: Controlled & Predictable Growth

Background

Castell Construction is a well-established housing development business delivering sustainable social housing projects across Wales.

Like most construction firms, Castell runs multiple projects at the same time. Each project requires upfront spend on materials, subcontractors, labour and statutory costs such as wages, rent and HMRC payments - often paid well before the final payment for the job is received.

Managing that timing gap is critical to sustaining growth.

The Challenge

Construction cashflow is naturally uneven.

Materials must be ordered. Contractors must be paid. Wages and tax liabilities fall due on fixed dates. Yet project income is received in stages and the majority typically after work has been completed.

At the same time, many B2B suppliers either do not accept card payments or have stopped accepting them due to fees. That limits flexibility when businesses want to use their existing credit lines to manage cashflow.

This creates a consistent working capital gap between paying out and getting paid.

Without careful management, that gap can restrict how many projects can run at once and reduces the ability to invest in future work.

Castell needed a practical way to manage payment timing without disrupting suppliers or adding unnecessary cost.

The Solution

Castell uses Bluechain to pay suppliers that do not accept cards, using their Allstar business card.

• Suppliers and contractors are paid as normal (bank transfer) and on time
• Castell controls when the card balance is settled (up to 44 days later)
• Payment timing is extended without renegotiating supplier agreements or damaging relationships
• The gap between outgoing project costs and incoming revenue is bridged

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Bluechain enables Castell to use their existing credit lines, while keeping supplier relationships intact.

The Outcome

Using Bluechain has strengthened Castell’s cashflow management and helped them invest in future growth.

Castell can now:

• Bridge the natural gap between project costs and incoming payments
• Keep cash in the business while still paying suppliers on time
• Run more projects simultaneously
• Complete jobs without added cashflow pressure
• Earn additional cashback through their Allstar business card

The result is controlled and predictable growth.

Conclusion

For Castell Construction, Bluechain has become a practical working capital tool.

By paying suppliers with their business card, even where cards are not accepted, Castell can manage the natural timing gap in construction, invest in future projects and scale with confidence, without changing how suppliers are paid.

“Bluechain is a practical working capital tool that gives us the ability to bridge cashflow gaps by paying multiple suppliers, across multiple projects, with our business card. Suppliers are paid on time and we’re able to invest into future projects and the growth” Aled Hopkins. Finance Manager, Castell Group

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