Concept, planning or full design?
Different stages, different fees. Describe the project and the AI tells you which RIBA stages you need.
Planning drawings, building regs and project design — typically 8–15% of build cost on a full service.
Read the brief on RIBA stages, architect vs technician and project management — then let Three local architects quote.
Different stages, different fees. Describe the project and the AI tells you which RIBA stages you need.
RIBA work stages, ARB registration, pre-app meetings, contract administration, fee models. Know the lingo.
Three local architects quote on the same brief — stages included, fee model, project management — so you compare like-for-like.
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Four moves that separate a smooth job from a nightmare.
Architects are RIBA-registered, can handle full design; technicians (CIAT) do planning + building reg drawings. Smaller projects fine with technician — saves money.
RIBA work stages (0–7) define the service. Pin down which stages — concept, planning, building regs, tender — are included in the fee.
A pre-application meeting with the council (£100–£500) gives you a steer before drawings — saving thousands if the answer is no.
Many architects only design; project management on site is a separate scope. Confirm who's running the build before you start.
Indicative UK ranges and what affects price.
By job type
Quote spread is typically ± 18% — always get 3 quotes.
Visual breakdown of costs, timelines and the questions you should be asking.
Architectural Services quick-view

Architectural Services explained
Everything you need to know before hiring a architectural services.
Architectural services are the foundation of any successful UK home improvement project, from modest rear extensions to ambitious new builds. These professionals bridge the gap between your initial ideas and a structurally sound, legally compliant reality.
Whether you are looking to unlock space with a loft conversion or navigate the complexities of a listed building renovation, an architect or architectural designer provides the technical expertise and creative vision required. They ensure your project is aesthetically pleasing, functional, and meets all UK statutory requirements.
Beyond just drawing plans, architectural services involve managing the intricate relationship between design, budget, and local authority regulations. Hiring a professional early in the process can prevent costly mistakes and ensure your investment adds maximum value to your property.
The process of working with an architectural professional is structured to move from broad concepts to granular technical details. Here is what you can typically expect during a standard project:
While some homeowners consider "DIY" plans for very simple internal alterations, most UK projects require professional architectural input to navigate legal hurdles. In the UK, the title "Architect" is legally protected; anyone using it must be registered with the Architects Registration Board (ARB).
A professional ensures your project complies with Part L (Fuel and Power) and Part P (Electrical Safety) of the Building Regulations, among others. They understand the nuances of National Planning Policy and local "Permitted Development" rights, which can be the difference between a project starting on time or being shut down by the council.
Beyond compliance, professionals bring spatial intelligence. They can identify ways to maximise natural light, improve "flow," and specify sustainable materials that reduce long-term energy bills, often saving you more than their initial fee over the lifespan of the building.
Architectural fees vary depending on the complexity of the project and the level of service required. Some professionals charge a flat fee for specific stages, while others charge a percentage of the total construction cost (typically 8% to 15% for a full service).
| Service | Low £ | High £ | Notes |
|---|---|---|---|
| Feasibility Study | £500 | £1,500 | Initial assessment of what is possible. |
| Planning Drawings (Extension) | £1,500 | £4,000 | Includes floor plans, elevations, and site maps. |
| Building Regulations Plans | £1,000 | £3,000 | Technical details for Building Control approval. |
| Measured Site Survey | £400 | £1,200 | Depends on the size and complexity of the house. |
| Full Service (New Build) | £8,000 | £25,000+ | From design to completion; often % based. |
Please note that these figures exclude VAT and Local Authority fees for planning submissions or building control inspections. Complexity, such as working on a listed building or in a Conservation Area, will typically increase costs by 20-30%.
Choosing the right person is about balancing technical skill with a design style that matches your taste. Follow these steps to find the best fit for your project:
Questions to ask before hiring:
Architects focus heavily on the creative design and aesthetic concepts of a building. Architectural Technologists focus more on the "science" of building—technical design, structural integrity, and how materials fit together. Both can submit planning and building regulations applications.
While not legally required, it is highly recommended. Even small projects must meet Building Regulations, and a professional ensures the new space integrates seamlessly with your existing home without causing structural issues.
For a standard extension, allow 4-8 weeks for the design and survey phase. Once submitted, a standard UK planning application takes 8 weeks for a decision. Technical drawings for building regulations usually take a further 2-4 weeks.
This is an optional service known as "Contract Administration." While it increases the fee, it provides peace of mind as the architect will inspect the work at key stages, manage payments to the builder, and ensure the design is followed precisely.
Describe the job in plain English. The AI asks a few smart questions, then tells you whether a architectural services is the right call, what it should cost, and what to ask before they start.
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