Why Your Refurbishment Budget is Wrong Before You've Started

Most refurbishment projects start with the wrong number. Not because anyone is dishonest — but because early-stage budgeting is genuinely hard, and the industry's default tools aren't fit for purpose.

We see it constantly. A developer or occupier sets an internal budget based on a rough cost-per-square-foot they heard somewhere, or a figure from a project they did five years ago in a different city with a different specification. The project is designed around that number. Then the tenders come back, and the number is wrong — sometimes by 20%, sometimes by 40%.

By that point, the design is done. The programme is set. And the client has to make a choice between descoping, redesigning, or finding more money. None of those options is cheap or painless.

Why early budgets go wrong

·        Generic benchmarks don't reflect current market conditions — labour, materials, and supply chain costs have shifted significantly in recent years

·        Specifications are often poorly defined at feasibility stage, leading to under-allowances for M&E, AV, and specialist finishes

·        Preliminaries, professional fees, and contingency are routinely underestimated

·        Sectoral nuances — aviation, data centres, heritage buildings — add cost complexity that standard rates ignore

The Refurb Cost IQ approach

This is exactly why we built Refurb Cost IQ — our cost-intelligence tool that generates realistic, data-driven refurbishment budgets based on actual market intelligence, not outdated benchmarks.

It allows clients, developers, and design teams to stress-test their feasibility assumptions at the earliest possible stage — before significant design fee is spent, before planning is committed, and before expectations are locked in at the wrong level.

"Get the budget right at the start, and everything else becomes simpler. Get it wrong, and you spend the rest of the project managing the gap."

What good early-stage cost advice looks like

A proper feasibility cost plan isn't just a number. It should set out the assumptions clearly, identify where the risks sit, and give the client confidence about what they're committing to. It should be reviewed as the design develops, not presented once and filed away.

Our consultancy service does exactly that. We work alongside design teams from the earliest stages, tracking cost in real time and flagging risk before it becomes a problem. It's not glamorous work. But it's the work that saves projects.

If you're starting a refurbishment project and want to make sure your budget is grounded in reality, download Refurb Cost IQ or speak to our consultancy team. Getting the numbers right at the start is the single most valuable thing you can do.

→  Get in touch: fitout@kairosconstruct.co.uk  |  kairosconstruct.co.uk