Business improvement services for owners whose turnover has grown faster than margin, cash and capacity. An operating partner works inside the business each month to find where the three are being lost, and puts it right.
Turnover is up, and profit has not followed it.
The order book is full, and the bank balance does not show it.
Engineers are busy, and the office is where work queues.
Every quote, hire and problem still lands on the owner’s desk.
None of these is a failing. Each is what growth does to a business whose way of running was built for a smaller one.
The work concentrates on the three places a growing contractor loses ground. It is about how the business is run, not how jobs are installed.
Jobs are priced to make a margin that has gone by the time the invoice is raised.
What changesWork is finished long before it is paid for, and growth makes the gap wider.
What changesThe business can only take on as much as the owner can personally oversee.
What changesImprovement is delivered on a monthly retainer, not as a one-off project that ends with a report.
Look at the numbers and the working week to find where margin, cash and capacity are being lost.
Agree a short list of improvements with the owner and managers, ordered by what each is worth.
Make each change with the team who will run it, so it fits the way the business already works.
Write the change into the management system and playbook, and measure it, so it stays in place.
A report recommends changes. An operating partner stays to carry them out.
The work happens in management meetings and with the people who run estimating, accounts and operations.
The work is for HVAC, renewables and electrical contracting businesses, and draws on experience across the wider installation and construction trades. The commercial pressures are familiar from the first conversation.
Each improvement is written down, given an owner and measured, so it does not depend on anyone remembering it.
Managing Director, Electrical & Instrumentation Business
October 2026
“Paul has really added value to our organisation, setting up new structures and reviewing existing processes. He has highlighted the gaps, collaborated well and given feedback every step of the way, helping us push the business forward.”
Construction Company Owner
August 2025
“Paul has been helping me improve my estimating, scheduling, and tracking to create bigger margins and improve productivity. He clearly relates project delivery performance to business financials.”
Owner, Electrical Contracting Business
October 2026
“Rostone Operating Partners brought the structure, discipline and tools we needed. We now have a steady flow of new leads, and I have the clarity to achieve my long-term goals.”
A business that holds its margin, collects its cash and runs without its owner has more options. It can raise capital, buy another contractor or be sold, on better terms.
Margin, cash and capacity
Ready for a funder’s questions
Bring another business in cleanly
Sell with the value built in
Process improvement is part of it. Business improvement is wider: it also covers pricing, cash, the management team and how decisions are made. The aim is a business that performs better, not only processes that run faster.
On a monthly retainer. The fee depends on the scope and the time involved each month, and is agreed before the work starts. Progress is reviewed regularly, so the scope can change as priorities do.
Not directly. The work is with the owner, the managers and the people who run estimating, accounts and operations. Engineers and site teams carry on as normal; changes that affect them, such as how variations are recorded, reach them through their own managers.
Business improvement is what gets worked on: margin, cash and capacity. The Fractional COO & Operating Partner is who carries that work out inside the business each month.
The Rostone blog has articles on running and improving contracting businesses, and How It Works sets out how an engagement runs from the first call.
A 30-minute call covers margin, cash and capacity, and which of the three would repay attention first.
