How Much Do Construction Consultants Charge in the UK?

Why Pricing Feels Opaque

If you have searched for construction consultant fees, you have probably found a wide range: £500 per day on one site, £15,000 per month on another, and project fees that run into six figures. The lack of standard pricing is not accidental. Construction consultancy covers everything from health and safety audits to full commercial turnaround, and the value delivered varies enormously.

For a construction or property business turning over £5M–£20M+, the more useful question is not "what is the rate?" but "what am I paying for, and what should it produce?"

This guide explains how UK construction consultants typically charge, what drives the price, and how to evaluate whether a fee is justified.

The Three Main Pricing Models

Most construction consultants use one of three structures: day rate, monthly retainer, or fixed project fee. Some combine all three depending on the work.

Day Rate

Day rates in the UK construction advisory market typically range from £800 to £2,500 per day, depending on seniority and specialism. A junior QS or planner may sit at the lower end. A senior advisor with a track record of commercial turnaround at £10M+ contractors will sit at the upper end.

Day rates work well for defined pieces of work: a tender review, a pricing workshop, or a one-off diagnostic. They become expensive when the engagement is open-ended, because every additional day adds cost without a guaranteed outcome.

Monthly Retainer

Retainers are common for ongoing advisory relationships. For £5M–£20M+ contractors, monthly retainers typically start around £3,000–£5,000 per month and can rise to £10,000+ for more intensive, founder-level support.

A retainer usually includes a set number of sessions per month, on-demand access, and ongoing implementation support. The advantage is continuity: the advisor learns your business, your team, and your market, and the work compounds over time.

The disadvantage is that not all retainers are tied to measurable outcomes. A retainer without deliverables is just an expensive conversation.

Fixed Project Fee

Fixed fees are used for scoped engagements with a clear output. Examples include:

• A commercial diagnostic with a written findings report
• Rebuilding a quoting and estimating process
• Designing a pipeline and bid management system
• Preparing a business for investment or sale

Fixed fees can range from £5,000 for a focused diagnostic to £50,000+ for a comprehensive operating system build. The key is that the scope, deliverables, and success criteria are defined before work begins.

What Drives the Cost

Several factors push fees up or down.

Seniority and track record. A consultant who has operated inside businesses like yours and produced measurable outcomes will charge more than someone applying generic frameworks.

Scope of work. A pricing review costs less than rebuilding your entire commercial operating system. The more the consultant builds and installs, the higher the fee.

Access and involvement. Advisory that includes time on site, attendance at team meetings, and direct work with your contracts managers costs more than remote monthly calls.

Risk and guarantee. Advisors who tie part of their fee to a measurable outcome, such as identified margin improvement or cost savings, usually charge a premium because they are taking on commercial risk.

Urgency and exclusivity. If you need someone fast, or if the advisor limits the number of clients they work with, expect to pay more.

What £5M–£20M+ Businesses Should Expect

At this level, you are not buying advice. You are buying systems, infrastructure, and a business that operates more independently.

A meaningful engagement for a £5M–£20M+ contractor will usually include:

• A structured diagnostic of pipeline, pricing, operations, and team
• A clear written plan with priorities and commercial impact
• Hands-on installation of systems and processes
• Training for the team who will run the system after the advisor leaves
• A guarantee or success criteria tied to measurable outcomes

If a consultant is only offering conversations and reports, they are not the right fit for this stage of business.

How to Compare Quotes

When comparing two or three consultants, look beyond the headline fee.

1. What is the deliverable? A report is not the same as a working system.
2. What stays in the business? You want processes, templates, and trained staff, not just recommendations.
3. What is the measurable outcome? If there is no way to judge success, the fee is arbitrary.
4. What is the total cost of ownership? A lower day rate that drags on for six months can cost more than a fixed fee that solves the problem in 90 days.

The cheapest option rarely produces the best result at this level. The right question is return on investment, not hourly cost.

Red Flags

Be cautious if a consultant:

• Cannot explain what they will produce in concrete terms
• Quotes a low day rate but cannot scope the total cost
• Refuses to tie any part of the fee to outcomes
• Has no relevant experience in construction or property
• Promises rapid transformation without diagnosing your business first

Advisory at £5M+ is a commercial decision. It should be treated with the same rigour as any major capital expenditure.

A Practical Starting Point

If you are considering hiring a construction consultant, start with a diagnostic. A focused diagnostic, typically £3,000–£8,000, gives you a clear picture of what is broken and what it would cost to fix before you commit to a larger engagement.

At Gurler Mae, the Commercial Diagnostic is designed exactly for this: a 14-day review that identifies £250k+ of commercial opportunity and gives you a clear plan before any larger commitment.

The fee is only part of the equation. The real measure is whether the business is better, more profitable, and less dependent on you after the work is done.