At Single Storey Extensions, we design and build high-quality ground floor additions that enhance space, function, and value for homeowners across the UK.

Whether you’re expanding your kitchen, creating an open-plan living area, or adding a guest room, we manage the entire process from design through to completion. Our focus is on delivering structurally sound, planning-compliant, and beautifully finished extensions that suit both modern and traditional homes.

What Does a Single Storey Extension Cost in or Around?

The cost of a single-storey extension ranges from £1,800 to £2,500 per square metre, depending on the size, design complexity, and chosen materials.

Costs are primarily influenced by factors such as foundation requirements, roof type, insulation and glazing quality, internal finishes, and additional features like skylights or bi-fold doors. Bespoke kitchens or premium fittings can also affect overall pricing but add significant lifestyle and property value.

Contact Single Storey Extensions to get customised prices for designing and building your home extension.

What Are the Most Popular Single Storey Extension Styles for Homes?

Homeowners can choose from a variety of single-storey extension styles designed to enhance both space and functionality, including:

• Rear extensions – Expanding living or kitchen areas into the garden, ideal for open-plan layouts and improved natural light.
• Side-return extensions – Making use of unused alley space along the side of terraced or semi-detached homes to widen interiors.
• Wraparound extensions – Combining rear and side extensions to create large, continuous living spaces with flexible layouts.
• Orangery extensions – Featuring partial brick walls and roof lanterns for a bright, classic aesthetic that suits period homes.
• Modern glazed extensions – Contemporary glass-fronted designs that connect indoor and outdoor spaces seamlessly.

Do You Need Planning Permission for a Single Storey Extension?

Planning permission for a single-storey extension is often not required under permitted development rights, provided certain size and location limits are met. However, properties in conservation areas or with previous additions may still need approval.

We conduct a full planning review and manage any required submissions, including prior approval and lawful development certificates.

How Long Does It Take to Design and Build a Single Storey Extension?

The full process for a single-storey extension usually takes between 12 to 20 weeks, depending on planning requirements and project scope. We allow 2 to 4 weeks for design, up to 8 weeks for planning (if needed), and 8 to 12 weeks for construction.

Weather conditions, supply availability, and bespoke features can impact timelines, but we provide clear schedules from the outset.

What Materials and Finishes Work Best for Extensions Properties?

A range of high-quality materials and finishes can be used to achieve both visual harmony and lasting durability, including:

• Brickwork and blockwork – Matching or complementing existing façades for a cohesive exterior appearance.
• Rendered finishes – Smooth or textured coatings that provide a clean, modern look with weather resistance.
• Timber cladding – Natural or treated wood panels adding warmth and contemporary character.
• Aluminium-framed glazing – Slimline window and door systems that maximise light and create seamless garden connections.
• Flooring finishes – Options such as porcelain tiles, engineered wood, or polished concrete for a durable, stylish interior.
• Wall and ceiling treatments – Plastered surfaces with integrated lighting or feature wall accents for a refined finish.

Can a Single Storey Extension Add Value to Your Home?

A well-planned single-storey extension can add 10–20% to your property’s value, especially if it creates desirable living space such as an open-plan kitchen-diner or additional bedroom.

Our work focuses on layouts that improve flow and maximise usable area, making your home more attractive to future buyers and more enjoyable to live in now.

Is a Single Storey Extension a Cost-Effective Alternative to Moving House?

Building a single-storey extension is often significantly more cost-effective than moving house, particularly when you factor in stamp duty, estate agent fees, and the hassle of relocating.

We help clients unlock the potential of their existing property, delivering a custom space designed around your current and future lifestyle, without the upheaval of moving.

Do Builders Offer Design-and-Build Services for Home Extensions?

Many local builders offer construction-only services, but our single storey extensions experts provide design-and-build packages that cover everything from architectural plans and structural calculations to planning submissions and construction management.

This integrated approach streamlines communication, reduces delays, and ensures consistency in both vision and delivery.

Contact Single Storey Extensions for a consultation on getting extensions on your property.

Find More Info

Make sure you contact us today for a number of great single storey extensions services.

For more information on Single Storey Extensions, fill in the contact form below to receive a free quote today.