When embarking on a construction or renovation project, understanding the costs associated with hiring an architect is a critical first step. Architects play an essential role in turning your ideas into reality, ensuring the project is functional, aesthetically pleasing, and compliant with regulations.
However, the cost to hire an architect can vary widely, depending on several factors. This guide will explore what influences these costs and provide an overview of what you can expect to pay for architects and beyond.
Factors for cost of hiring an architect
The cost of hiring an architect depends on various factors that influence the scope of their work. For instance, the complexity and size of your project have a significant impact. Larger or more intricate projects require more time and expertise, which naturally leads to higher fees. Similarly, an architect’s experience and reputation play a role. Established architects with a strong portfolio or a well-known name in the industry often charge premium rates because of their proven track record.
Another key factor is location. In metropolitan areas such as London, architectural fees tend to be higher due to increased demand and the higher cost of living. The level of service you require also matters. Some homeowners only need basic design drawings, while others opt for comprehensive services, including project management and overseeing construction.
Average prices for Architects in London, UK
Architectural fees are usually calculated in one of three ways: as a percentage of the construction cost, as a fixed fee, or as an hourly rate. For most projects in the UK, architects typically charge between 5% and 15% of the total construction cost. For example, if your construction budget is £200,000, the architect’s fees could range from £10,000 to £15,000.
For smaller, straightforward projects, some architects may offer fixed fees, providing clarity and certainty regarding costs from the outset. Alternatively, hourly rates are common for less defined projects or where specific consultations are needed. These rates typically range from £50 to £100 per hour, depending on the architect’s expertise and the project’s complexity.
What are the architect’s costs per task?
Hiring an architect is often broken down into specific tasks, each carrying its own fee structure. For instance, the initial consultation is usually the first step, and while some architects offer this service for free, others charge an hourly rate, typically between £50 and £150.
Feasibility studies, which assess whether a project is viable, can cost anywhere from £1,000 to £10,000, depending on the complexity and the level of detail required. Planning applications, a crucial step for most projects, often cost between £5,000 and £10,000. Similarly, creating technical drawings for building regulations and construction purposes typically falls in the range of £3,000 to £7,000.
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How much do architects charge for an extension?
For residential extensions, costs vary based on the size and complexity of the project. A single-storey extension usually incurs architect fees ranging from £3,000 to £5,000 for planning applications.
Additional charges for technical drawings and project management may apply. For double-storey extensions, fees are typically higher, ranging from £4,000 to £6,000. It’s always advisable to request detailed quotes designed for your specific project to ensure there are no surprises.
What Does an Architect’s Fee Include?
Architectural fees typically cover a variety of services, ensuring that your project progresses smoothly from concept to completion. Here’s a breakdown of the key services often included in an architect’s fee:
- Initial drawings for accurate designs to meet project specifications.
- Submit planning applications to local authorities, ensuring compliance with regulations.
- Detailed drawings to adhere to building regulations and provide a blueprint for construction.
- Building Regulations Compliance so that the designs meet all legal and safety standards.
- Optional Project Management to ensure that all work aligns with the agreed designs and specifications.
- Fee Inclusions Confirmation to verify which of these services are included in the quoted fee.

Hidden Costs to Consider for Architects
While an architect’s primary fees cover most essential services, several hidden costs could arise during the project.
- Planning application fees, which are set by local authorities, are typically not included in the architect’s fee and must be paid separately.
- Additionally, if structural changes are involved, you may need to hire a structural engineer, whose services usually cost between £50 and £90 per hour.
- Unexpected changes or revisions to the design can also lead to additional costs, especially if these revisions are outside the agreed scope of work.
- Furthermore, VAT (value-added tax) is often charged on architectural fees, so you should confirm whether the quoted price includes VAT.
Tips for Cost-Saving When Hiring an Architect
Hiring an architect is a significant investment, but there are ways to make the process cost-effective without compromising on quality. Here are some practical tips for saving money when engaging an architect for your project:
Clearly Define Your Goals | Before meeting with an architect, outline your needs, preferences, and budget. A clear vision reduces the time and revisions needed, saving you money. |
Set a Realistic Budget | Discuss your budget openly with the architect. They can customise the design to your financial constraints, avoiding unnecessary expenses. |
Choose the Right Architect | Research and hire an architect with experience in projects similar to yours. This ensures efficiency and reduces the likelihood of costly mistakes or redesigns. |
Opt for a Simpler Design | Elaborate and intricate designs often cost more to plan and build. Prioritise functionality and simplicity to save on both architectural fees and construction costs. |
Hire Locally | Local architects are familiar with regional building codes, suppliers, and contractors, which can streamline the process and reduce costs. |
Request Fixed-Fee Agreements | Some architects charge an hourly rate, which can lead to unpredictable costs. Negotiating a fixed-fee agreement provides better cost control. |
Consider Partial Services | If your budget is tight, you can hire an architect for specific phases, such as conceptual design or obtaining permits instead of full-service engagement. |
Reuse Existing Plans | If you’ve previously worked with an architect or purchased design plans, consider modifying these instead of starting from scratch. |
Maximise Natural Light and Ventilation | Incorporating passive design strategies like natural light and ventilation can save on energy costs and may reduce the need for extensive mechanical systems. |
Source Materials Early | Collaborate with your architect to identify cost-effective, durable materials. Ordering materials in advance can help avoid delays and price hikes. |
Be Decisive | Minimise changes during the design and construction phases. Frequent revisions can lead to increased architectural fees and project delays. |
Explore Pre-Designed Options | Some architects offer pre-designed plans that can be adapted to your needs at a lower cost than a fully custom design. |
Bundle Projects | If you have multiple projects in mind, discuss bundling them with your architect. This can often lead to discounts on fees. |
Leverage Technology | Architects can use advanced tools like Building Information Modelling (BIM) to optimise designs and anticipate potential issues, saving money during construction. |
Finding an Architect
Finding the right architect for your project requires careful consideration. Start by checking their qualifications and ensuring they are registered with the Architects Registration Board (ARB). Membership in professional bodies like the Royal Institute of British Architects (RIBA) is an added advantage, indicating adherence to high standards.
Reviewing the architect’s portfolio is essential to assess their style and experience with similar projects. Don’t hesitate to ask for references from previous clients to gain insights into their reliability and quality of work. Comparing quotes from multiple architects is also recommended to ensure you’re getting value for money.
You can also read more:
https://paramountbuilt.co.uk/blogs/9-different-types-of-architects/
https://paramountbuilt.co.uk/blogs/double-storey-side-extension-guide/
https://paramountbuilt.co.uk/blogs/converting-a-detached-garage-into-a-granny-flat-in-the-uk/
https://paramountbuilt.co.uk/blogs/why-some-improvements-wont-increase-your-uk-homes-value/
FAQ’S
For new builds, architects typically charge a percentage of the construction cost. This often ranges between 5% and 15%, depending on the project’s complexity and scale.
While not all projects require an architect, their expertise can be invaluable for ensuring a well-thought-out design and smooth project execution. For large or complex projects, hiring an architect is highly recommended.
Architectural fees vary widely due to factors such as project complexity, the architect’s experience, and the level of service required. Additionally, each project is unique, requiring personalised solutions, which makes standardisation challenging.