Extensions

Professional house extension services designed to create more space, increase property value, and transform the way you live in your home across Sussex and beyond.

FSP Building Services: Extensions

Create the Space Your Home Needs

A house extension is one of the most effective ways to increase your living space without the cost and disruption of moving home. Whether you’re looking to create a larger kitchen, add an extra bedroom, build a home office, or create an open-plan family living area, an extension allows you to maximise the potential of your existing property.

Our house extension services cover every stage of the project, from initial planning and groundwork through to construction and final finishing. We work closely with homeowners to deliver high-quality extensions that blend seamlessly with the existing property while meeting modern lifestyle needs.

What's Included in Our House Extension Services?

From the first consultation through to project completion, we provide a complete extension solution designed around your home, budget, and requirements. Every extension is carefully planned and built to the highest standards, ensuring a beautiful and practical addition to your property.

Consultation, Planning & Design

Every successful extension starts with a clear understanding of your goals. We discuss your ideas, assess the available space, and help develop a design that complements your property while maximising functionality and value.

Groundworks & Foundations

Strong foundations are essential for any extension. We carry out all necessary excavation, ground preparation, and foundation works to provide a stable base for the new structure.

Structural Construction

Our experienced team constructs the main structure of your extension, including walls, floors, roofing systems, and any structural steelwork required to create safe, durable, and compliant living spaces.

Roofing, Windows & External Finishes

We install high-quality roofing, doors, windows, brickwork, and external finishes that integrate seamlessly with your existing home, creating a cohesive appearance both inside and out.

Internal Building Works

From insulation and plastering to partition walls and first-fix installations, we complete all internal construction works required to prepare your extension for its final finishes.

Finishing & Completion

The final stage includes flooring preparation, decorating, second-fix carpentry, and all finishing details that transform the new space into a comfortable and functional part of your home.

Types of Extensions We Build

Single-storey extensions
Double-storey extensions
Rear extensions
Side Return extensions
Wraparound extensions
Kitchen extensions
Open-plan Living extensions
Home Office extensions
Utility extensions
Garden Room extensions

Why Invest in a House Extension?

A professionally built house extension can significantly improve both your lifestyle and the value of your property. It provides the additional space your family needs while allowing you to remain in the home and location you already love.

Extensions can create larger kitchens, additional bedrooms, dedicated workspaces, improved entertaining areas, and more practical living environments for growing families. In many cases, extending your home can be a more cost-effective alternative to moving, avoiding estate agent fees, stamp duty, and relocation costs.

Whether you’re looking to create your dream kitchen, accommodate a growing family, or increase your property’s market value, a high-quality house extension is a long-term investment that enhances both the functionality and appeal of your home.