How Much Is a Contracting Business Worth? UK Valuation Guide

Here is the direct answer: most owner-operated UK contracting businesses are worth around 2x to 3.5x their adjusted annual profit, and how much is a contracting business worth in your case depends far less on turnover than on three things - how much of the revenue is contracted and recurring, how much of the business depends personally on you, and whether the workforce would survive a change of owner. Larger contracting businesses with £500k+ of sustainable earnings are valued on EBITDA instead and command higher multiples. This guide shows you how the number is actually built, with a worked example you can copy for your own business.

Start with adjusted profit, not turnover

Turnover is vanity in contracting more than in any other sector, because so much of it passes straight through to subcontractors and materials. A £3m-turnover firm keeping £120k is worth less than a £900k-turnover firm keeping £280k. Buyers price the money the business reliably puts in its owner's pocket.

The figure that valuation is built on is SDE (seller's discretionary earnings), sometimes just called adjusted profit:

• Net profit on the accounts, plus
• the salary the owner pays themselves, plus
• genuine personal expenses run through the business (vehicle, phone, travel), plus
• one-off costs a new owner would not repeat.

Every add-back needs evidence. Documented add-backs raise your valuation; undocumented ones are just claims a buyer will strike out. Years of aggressively minimising declared profit to save tax work against you here - a buyer pays a multiple on profit they can see, not profit you say was really there.

The multiple ranges

• Around 2x adjusted profit: owner-dependent firms doing one-off project work, where the owner wins the work, prices it and holds the relationships. The business is really a well-paid job, and the price says so.
• 3x to 3.5x: systemised firms - contracted, recurring revenue; supervisors or a manager running delivery; clean books; a workforce that stays. This is where the same profit earns a visibly higher price.
• Above 3.5x: the larger end. Once sustainable earnings pass roughly £500k, buyers (including trade consolidators and private equity) value on EBITDA after a full market-rate management salary, and multiples step up again - because the business is provably a machine, not a person.

You can see how these ranges translate into real asking prices by scanning the contractor businesses for sale in the UK right now - note how the contract-backed listings carry stronger multiples than project-only firms with similar profit.

What moves the multiple up

• Recurring maintenance contracts. The single biggest lever. Term maintenance contracts, FM agreements, housing association frameworks and service plans turn next year's revenue from a hope into a schedule. Buyers pay a premium for revenue that arrives without being re-won - one-off project work, however profitable, has to be re-sold from zero every year.
• Owner independence. If you can take a month off and the jobs still get priced, staffed and invoiced, you have a business rather than a job. An estimator, supervisors and office staff in place are worth real money at sale.
• A vetted, retained workforce. Qualified people who stay - with tickets and accreditations documented (Gas Safe, NICEIC, CSCS, SMSTS) - and a proven, vetted subcontractor bench. A buyer is purchasing capability; if the capability walks out at completion, they have bought vans.
• Clean, provable books. Three years of tidy accounts, honest work-in-progress valuations, reconciled CIS records, and gross payment status intact. Clean numbers do not just help the sale - they remove the doubt that price-chips deals.
• A forward order book. Signed work stretching months ahead, spread across several clients rather than concentrated in one.

What drags it down

• The business is the owner - all pricing, relationships and know-how in one head.
• Lumpy, project-only income with no framework or maintenance base.
• One client or main contractor at 30-40% of revenue.
• Overstated WIP, aged uncollectable retentions, or CIS records that do not reconcile.
• Cash work that cannot be evidenced - income you cannot prove, you cannot sell.

A worked example

Take a mechanical and electrical contractor turning over £1.1m with £240,000 of adjusted profit (SDE) once the owner's salary and personal costs are added back. Same profit, two very different businesses:

	Owner-dependent, project-only	Systemised, contract-backed
Turnover	£1.1m	£1.1m
Adjusted profit (SDE)	£240,000	£240,000
Revenue base	One-off installs, owner wins the work	60% term maintenance and framework contracts
Delivery	Owner prices and runs every job	Contracts manager and two supervisors
Typical multiple	~2.2x	~3.4x
Indicative value	~£530,000	~£815,000

Nothing about the trade changed. The structure did - and it is worth roughly £285,000. That gap is the entire argument for building contracted revenue and a second tier of management before you sell, which is exactly what our guide to selling a contracting business in the UK walks through.

Get your own number

You can get a ballpark in under a minute with our free valuation tool - enter your revenue and profit and see an instant range, no sign-up needed. It is a starting point, not a formal valuation: your contracts, order book, team and CIS standing all move the number, which is exactly what a vetted broker assesses when you are ready for the real figure.

Buying rather than selling? The same logic runs in reverse - our guide on how to buy a contractor business in the UK shows you how to test whether a seller's asking multiple is justified, and you can put it to work on the live UK contractor businesses for sale today.