Are you envisioning a transformation that extends your living space with a single-story extension? The journey to creating your dream space begins with a clear understanding of the various facets of single-story extensions. At 7 Design Build, as architects in Hampshire, we recognise the significance of this architectural venture. In this comprehensive guide, we will navigate through every dimension of single-story extensions, covering essential considerations such as cost analysis, innovative design concepts, planning permission intricacies, and the latest trends in ground floor extensions. Join us on this architectural voyage where we explore the art of seamlessly expanding your living space, enhancing your property, and bringing your vision to life.

Crunching the Numbers: The Cost of Single-Story Extensions

At 7 Design Build, we understand that turning your vision of an extended living space into reality is an exciting journey. Single-story extensions not only amplify your living area but also elevate the value and aesthetics of your home. However, one of the first questions that arises when considering this project is, “What will it cost?” Delving into the financial aspects of single-story extensions is an essential step that sets the foundation for your home transformation.

Deconstructing the Costs

The budget for a single-story extension can vary considerably, and to give you a comprehensive view, let’s break down the key elements:

Construction Expenses: This encompasses the cost of materials, labour, and all the physical components that bring your extension to life. Variables such as the size and complexity of your design, as well as local labour rates, influence this aspect.

Architectural and Design Fees: Enlisting the expertise of architects and designers, like those at 7 Design Build, ensures that your extension aligns with your vision while adhering to structural integrity. It’s important to factor in these fees as part of your budget.

Navigating Planning and Building Regulations: To ensure that your extension complies with local regulations, there may be fees associated with obtaining planning permissions and building regulation approvals.

Average Cost Benchmarks

While providing an exact cost without assessing your unique project is challenging, it’s valuable to have ballpark figures in mind. On average, a single-story extension might cost you anywhere between £1,200 and £2,500 per square meter. This range varies based on factors such as location, design intricacy, and the quality of materials selected.

A Glimpse into 2024

As we step into 2023, it’s important to keep an eye on economic factors, like fluctuations in material prices and labour costs, that may influence your budget. Staying informed about these dynamics is a proactive way to plan effectively.

DIY or Professional Build?

While some may contemplate the DIY route to save costs, it’s essential to weigh the pros and cons. Opting for professional services ensures compliance with regulations, superior workmanship, and peace of mind throughout the project.

In the forthcoming sections of this guide, we’ll delve deeper into the world of single-story extensions. From design inspirations to the intricacies of planning permissions, we’ll equip you with a holistic understanding of the cost dynamics. By the end of this journey, you’ll be well-prepared to embark on your single-story extension project with 7 Design Build, where we transform your vision into architectural excellence.

Elevate Your Vision: Single-Story Extension Ideas

At 7 Design Build, we believe that single-story extensions aren’t just about adding space; they’re an opportunity to elevate your lifestyle and architectural vision. Whether you’re yearning for a serene retreat, a dynamic entertainment zone, or a versatile family haven, the canvas is yours to shape. In this section, we’ll explore inspiring single-story extension ideas that embody innovation, elegance, and the seamless fusion of form and function.

Contemporary Elegance

For those with a penchant for modern aesthetics, consider a contemporary single-story extension. Think clean lines, minimalist design, and an abundance of natural light. Large, energy-efficient windows and sliding glass doors can create a sense of open, fluid living, merging your indoor and outdoor spaces.

Garden Oasis

Transform your single-story extension into a garden oasis. Picture a tranquil reading nook or a dining area that immerses you in the beauty of your outdoor landscape. Incorporate elements like expansive windows and French doors to blur the boundaries between nature and your interior.

Culinary Delight

If cooking is your passion, a single-story kitchen extension can be a culinary haven. Design a space that combines practicality with style, featuring high-quality appliances, generous countertops, and creative storage solutions. It’s not just a kitchen; it’s a statement of culinary excellence.

Luminous Home Office

With remote work becoming the norm, a single-story extension can serve as an inviting home office. Flood the space with natural light using floor-to-ceiling windows and consider customizing it to your work preferences, ensuring a productive yet comfortable environment.

Family Nexus

For families seeking a versatile space, the single-story extension can be a harmonious family nexus. Create open-plan areas that seamlessly blend play, relaxation, and dining zones. It’s a space where family bonds grow stronger, where everyone finds their place.

Artistic Expression

Let your single-story extension become a canvas for your artistic expression. Incorporate unique architectural elements, from soaring ceilings to striking feature walls. Whether you’re an artist or an art enthusiast, this space can be a sanctuary for creativity and appreciation.

Sustainable Retreat

Embrace sustainability by designing an eco-friendly single-storey extension. Utilize green building materials, incorporate energy-efficient systems, and explore renewable energy sources like solar panels. It’s an investment in the planet and a testament to your commitment to sustainable living.

These single-story extension ideas are the starting point for your architectural journey with 7 Design Build. We understand that your home is a reflection of your personality and lifestyle, and our team is here to transform your ideas into reality. In the following sections of this guide, we’ll delve into essential considerations such as planning permissions and regulations, ensuring that your vision aligns seamlessly with your project.


Clearing the Path: Planning Permission for Single-Story Extensions

The prospect of a single-story extension brings excitement and creativity to your architectural journey. However, it also raises an important question: “What about planning permission?” Navigating the realm of planning permission is a vital aspect of ensuring the success of your extension project. In this section, we’ll illuminate the process and provide essential guidance on understanding and securing planning permission for your single-storey extension.

Permitted Development Rights (PD)

In certain cases, you may be fortunate enough to fall under the umbrella of Permitted Development Rights (PD). PD allows you to extend your property within predefined limits and conditions, such as size, location, and height. It’s essential to recognize that not all extensions qualify under PD rights, so it’s advisable to investigate the specific rules and regulations applicable to your situation.

The Role of Local Authorities

Local authorities have their own unique set of guidelines and regulations governing planning permissions. These regulations can vary significantly from one area to another. To ensure compliance, it’s crucial to engage with your local planning department or consult with experts like 7 Design Build, who can offer insights into the specific requirements and constraints of your location.

Factors Influencing Planning Permission

Several factors may impact whether you require planning permission, including the size and scale of your extension, its proximity to property boundaries and neighbouring structures, and its potential effects on the local environment and heritage conservation areas. Additionally, the design and architectural coherence of your extension play a vital role in the decision-making process.

The Application Process

If your single-storey extension necessitates planning permission, you will need to initiate a formal planning application with your local authority. This involves providing comprehensive plans and documentation related to your proposed extension. Ensuring the completeness and accuracy of your application is paramount to prevent delays in the process.

Professional Guidance

While the planning permission process can appear daunting, you don’t have to navigate it alone. 7 Design Build offers expertise in architectural design and an in-depth understanding of local planning regulations. By entrusting us with your project, you benefit from our guidance, ensuring a thorough and compliant planning application.

Community Engagement

In certain circumstances, your local authority may require community engagement or consultations with neighbours regarding your extension project, particularly if it is deemed to have a significant impact on the local area.


Understanding the nuances of planning permission is a pivotal step in your single-story extension journey. At 7 Design Build, we are committed to guiding you through this process, ensuring that your extension aligns seamlessly with your vision while complying with all necessary regulations. In the following sections, we’ll explore additional considerations to further empower your architectural endeavors.