Extensive building services for your needs


AlexanderKarl excels in creating beautiful extensions that enhance your living or working space. Our approach ensures that each new structure complements and integrates smoothly with your existing property, providing functional and aesthetic value to your home or business.


Specialising in alterations, we transform spaces to match your evolving needs. Whether it’s a simple layout adjustment or a comprehensive redesign, we focus on aligning every change with your personal preferences and lifestyle, ensuring a perfect blend of form and function.


Our interiors service is dedicated to crafting spaces that reflect your unique style and comfort. With a keen eye for detail and a commitment to quality, we design and execute interior solutions that range from modern chic to timeless elegance, creating environments that are not only visually stunning but also deeply personal.

New Build Projects

Our New Build Projects service transforms visions into reality, offering bespoke, end-to-end solutions in the South of the UK, ensuring every new construction is crafted to perfection, on time, and within budget.

AlexanderKarl values your freedom to make informed choices throughout your project. We can offer a curated list of architects, each highly skilled in turning unique visions into reality. While we can guide and support, the choice of architect is yours, ensuring your project reflects your personal style.

Our Approach

Discover how we work

Our projects

View our work

Get in touch with us today & start something special in your home.

Proud to be a member of the Federation of Master Builders

The Federation of Master Builders is the largest trade association in the UK construction industry representing the interests of small and medium-sized building companies and lobbying for members at both national and local levels.