Croxford Construction are trusted local builders in Northampton, specialising in house extensions that add space, value, and style to your home. Whether you’re planning a single-storey kitchen extension, a double-storey addition, or a complete open-plan redesign, our experienced team manage every stage from design to completion.
With over two decades of construction expertise across Northamptonshire, we understand local planning rules, building regulations, and the importance of delivering high-quality results on time and on budget. From initial consultation through to finishing touches, Croxford Construction turn your extension ideas into real, functional living space - built to last and finished to perfection.
When you choose Croxford Construction, you’re working with a reputable Northampton-based building company known for reliability, craftsmanship, and clear communication. Every project is overseen by an experienced local team that takes pride in professional workmanship and customer satisfaction. We offer complete project management - handling design, planning applications, construction, and finishing - ensuring your extension project runs smoothly from start to finish.
We specialise in a range of high-quality home extensions, including:
Each extension is tailored to your property style, budget, and long-term goals.
Many smaller extensions in Northampton fall under permitted development rights, but larger or double-storey projects often require planning permission. Our team can help with drawings, applications, and liaising with the local planning department.
Learn more about planning permission in Northampton on the North Northamptonshire Council website.

Simply fill out our contact form and tell us about your needs – let’s start turning your plans into reality!