Helping construction &
engineering firms build
financial strength

How we champion
your business

In construction and engineering, managing cash flow, project margins and contracts is a constant balancing act.

Our sector specialists deliver practical, grounded advice that helps you build profitability and resilience into every stage of your operation.

4 Reasons to Choose Sumer

Increase project profitability:

Detailed cost analysis and management accounting that enhances margins on every project.

Manage cash flow with confidence:

Practical strategies for stage payments and supply chain pressures.

Optimise your tax position:

Specialist advice on capital allowances, R&D tax credits and sector-specific reliefs.

Build for growth:

Strategic business planning that helps you scale operations without compromising quality or profitability.

Let's work together to build your business.

Speak to Sumer

Meet the team

There are plenty of ways Sumer can make a
difference to your business.

But if we had to pick one, it’s our people. With partner-led services from local experts in every region, we offer national scale and personal
support from people who understand your sector and your community. From succession planning and exits to international growth, our
specialists are here to help you make the big decisions with confidence.

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Roffey Homes

“Carpenter Box provide us with a complete service. They look after everything from audit and payroll to sorting out our pension schemes and personal tax planning. We really value the range and depth of expertise that they have under one roof, because property and construction can be a complex industry, but the team have excellent