Embarking on a small extension project comes with a list of considerations, and one question that often surfaces is: Do I need an architect for a small extension if I live in London? This query is valid and important. Today, we’re cutting through the confusion to give you a clear and concise answer.

Rendered 3D house in London

To Hire or Not to Hire: That is the Question

In a nutshell, hiring an architect for a small extension in the UK isn’t a legal requirement. However, an architect can bring a lot to the table they can do:

  • Expertise: Architects have a knack for maximising space, improving functionality, and enhancing aesthetic appeal. They can guide you in making the best design decisions.
  • Building Regulations: They ensure your plans are compliant with all relevant building regulations. If your extension isn’t compliant, you may face legal issues down the line.
  • Planning Permission: While many small extensions don’t require planning permission, some do. An architect can help you navigate the planning permission process.
  • Project Management: Architects can liaise with builders and other professionals, overseeing the project to ensure everything goes according to plan.
Architectural residential house

Choosing the right professional for your home project starts with understanding the difference between an architect and interior designer. That said, if your extension is particularly straightforward, you may decide to go it alone or hire a builder who offers design services.

Consider the Costs

Of course, hiring an architect comes with a cost, so let’s break this down. Typically, an architect’s fees for a home extension will be between 7% – 15% of the total project cost. For example:

  • For a £20,000 extension, the architect’s fee could be between £1,400 – £3,000.
  • For a £50,000 extension, you could expect to pay between £3,500 – £7,500 for an architect.

These costs may seem steep, but remember that a well-designed extension can significantly increase your home’s value and minimise the risk of house falling apart.

architectural two floored house

Making the Right Choice

The decision to hire an architect for your small extension in London ultimately boils down to your individual needs and preferences. If you value professional guidance, expertise, and peace of mind, hiring an architect could be the right choice for you. But if you’re working with a tight budget, and the extension is straightforward, you may consider going the DIY route or working directly with a builder as it may fall within permitted development.

Do I Need an Architect for a Small Extension?