Home Extension Design

Architectural Design, planning And Building Regulations services across the South West

  • Modern backyard with patio, two chairs, a small table, potted plants, and a view of a newly constructed extension with wooden siding, large glass sliding door, and kitchen inside, surrounded by brick houses and a sky with clouds.
  • A real estate agent showing a floor plan to a young couple in a living room with large windows and a view of trees outside.
  • Modern kitchen with white marble countertops, a wooden dining table with green chairs, and skylights allowing natural light, overlooking a green garden.
  • A woman and two children sitting at a dining table in a brightly lit kitchen, with large sliding glass doors leading to a patio with blooming flowers and outdoor furniture.

Our
Services

  • Measured Surveys icon

    Measured Surveys

    A complete digital record of your property, combining a measured survey, existing drawings and a detailed 3D model as the foundation for design.

  • Planning Drawings icon

    Planning Drawings

    From design development through to submission, we prepare and manage your planning application or Lawful Development Certificate.

  • Building Regulations icon

    Building Regulations

    A complete technical package of drawings, specifications and supporting information to guide your project through Building Regulations approval.

  • Project Management icon

    Construction

    Contractor selection and introductions, supported by independent technical advice and client-side guidance throughout construction.

GET IN TOUCH
Family gathering in a modern, sunlit kitchen and dining area with wooden flooring, a round table, and three people: a man, a woman, and a small child.

More Space. Better Living.

Your home should work for the way you live. Extend Haus designs considered, practical extensions that transform existing homes into spaces that feel brighter, more spacious and more connected.

We guide you through every stage, from developing your ideas and securing planning permission to Building Regulations and construction.

Thoughtful design, clear advice and a simpler route to a better home.

GET IN TOUCH

Experience Behind Every Design

Blueprints and architectural drawings for a single-story home extension project, including floor plans, roof plan, elevation, and cross-section details, placed on a white desk with drawing tools and books.

Great residential design is about more than creating beautiful spaces. It is about understanding how people live and knowing how to turn an idea into something that can actually be built.

With over 25 years of architectural experience, we bring together design expertise, technical knowledge and practical construction experience to every project.

We create carefully considered extensions that respond to the character of your home, maximise space and natural light, and meet the practical requirements of planning, Building Regulations and construction.

Our approach is straightforward: listen carefully, design thoughtfully and provide expert guidance from concept through to construction.

Bright dining room with a wooden table and six patterned chairs, large sliding glass doors opening to a backyard patio with an umbrella, greenery, and brick wall, artwork on the wall, and children's toys and a tricycle in the corner.