Blog 4//How Much Does an Architect Cost in the UK? (2025 Guide for Homeowners)
Thinking about hiring an architect for your home renovation or new build in the UK? One of the first questions most people ask is:
"How much does an architect actually cost?"
In this guide, we’ll break down how architects charge, what you can expect to pay in 2025, and how to make the most of your investment.
How Do Architects Charge?
In the UK, architects typically charge in one of three ways:
1. Percentage of Construction Cost
Most common method.
Ranges from 7% to 12% of the total build cost.
Depends on complexity, size of the project, and services provided.
Example:
If your extension costs £100,000 to build, your architect may charge £7,000–£12,000.
2. Fixed Fee
Often used for smaller or clearly defined jobs (e.g. planning drawings).
Popular for feasibility studies, planning submissions, or extensions.
Example:
A fixed fee for a house extension design might be £2,500 – £5,000 depending on scope.
3. Hourly Rate
Less common, but used for consultation or ad-hoc design work.
Rates typically range from £70–£150 per hour.
Average Architect Fees in the UK (2025 Estimates)
Project TypeTypical Architect FeeLoft conversion£2,500 – £5,000Rear house extension£3,500 – £7,000Full home renovation£6,000 – £15,000+New build (self-build)8–12% of build costConcept design only£1,000 – £3,000
Do Architect Fees Vary by Location?
Yes. Fees in London and the South East tend to be higher due to:
Greater demand,
Higher construction costs,
Planning complexity.
Meanwhile, fees may be more competitive in the North, Midlands, and rural areas — but always check the level of service provided.
What’s Included in an Architect’s Fee?
A full-service architect in the UK will typically offer:
Concept & planning drawings
Planning application management
Building regulations
Tendering & contractor selection
Site visits and project oversight
You don’t have to use every stage — many homeowners stop at planning or building regs stage.
Is Hiring an Architect Worth It?
In most cases, yes — and here’s why:
They help unlock the maximum value from your property.
A good architect can save you money by preventing design errors.
Their experience with planning policy can speed up approvals.
“A well-designed space can add more value than it costs — both in liveability and resale.”
Tips for Getting the Most from Your Architect
Be clear about your budget and goals early on.
Ask for a detailed fee breakdown before signing a contract.
Get a written scope of services — so expectations are aligned.
Use RIBA-registered architects where possible for professionalism and accountability
