The Appeal of Annexes in London Homes

Annexes, also referred to as garden rooms, granny flats, or backyard studios, have become increasingly popular among London homeowners. These standalone or semi-attached structures offer additional living space without the need to move house. Whether it’s to accommodate aging relatives, provide a private area for guests, or establish a functional work-from-home space, annexes offer unparalleled versatility.

In densely populated London, annexes present an elegant solution to the growing need for more space. With creative designs, they can be both functional and visually appealing, adding value to your property. Popular uses for annexes include:

  • Guest or Granny Accommodation: A self-contained space for independent living.
  • Home Offices: Perfect for professionals embracing hybrid work models.
  • Rental Properties: Annexes can generate extra income as Airbnb-style accommodations, subject to permissions.
  • Hobbies and Recreation: Studios for art, fitness, or music rooms tailored to personal interests.

Factors to Consider for Annex Projects in London

Building an annex in London requires careful consideration of several factors:

  1. Planning Permission: Many annex projects fall under Permitted Development Rights, but not all. Detached structures, annexes intended for independent living, or developments in conservation areas may require planning permission.
  2. Size and Location: Annexes should comply with local guidelines on height, size, and proximity to boundaries.
  3. Utility Connections: Self-contained annexes typically need their own water, electricity, and sewage connections, which requires advanced planning.
  4. Integration with Property Style: Annexes should harmonize with the existing home design and neighborhood aesthetics.
  5. Conservation Areas: For those living in protected zones, restrictions may limit the visual impact and scale of annex construction.

From navigating the complexities of planning approval to ensuring compliance with building regulations, annex projects require meticulous planning and thoughtful execution.


Why Choose Tholos Architects for Your Annex Project?

Tholos Architects brings unparalleled expertise and bespoke solutions to homeowners planning annex projects. With years of experience designing annexes that blend seamlessly into London homes, we are the trusted partner for your project.

Expertise in Design and Functionality

At Tholos Architects, we believe an annex should enhance both your lifestyle and your property. Whether you’re envisioning a chic, modern studio or a traditional design that complements your existing architecture, our team will create a space tailored to your needs and aesthetic preferences. We specialize in efficient layouts that maximize functionality, from compact open-plan designs to multi-room accommodations.

Navigating Planning Permission

Understanding London’s intricate planning and development regulations can be overwhelming. Our team has extensive experience handling planning permission applications, including projects in conservation areas and those requiring specific approvals. We’ll guide you through the process, ensuring your annex meets all legal and technical requirements.

Sustainable and High-Quality Materials

We prioritize sustainability, sourcing environmentally friendly materials and integrating energy-efficient systems where possible. Your annex won’t just look stunning—it’ll stand the test of time.

End-to-End Project Management

Tholos Architects offers a comprehensive service, managing every step of the project from initial design and feasibility studies to obtaining permissions and overseeing construction. Our commitment to detail and excellence ensures a smooth process and a final product that exceeds expectations.

A Portfolio That Inspires

From standalone annexes with luxurious interiors to integrated spaces that balance utility and elegance, Tholos Architects has a proven track record. Our designs not only add space but also significantly enhance property value.


For those planning an annex project in London, Tholos Architects is your go-to partner for innovative design, seamless project management, and guaranteed satisfaction. Contact us today to bring your vision to life!