Premium-Quality Home Extensions

HAC Designs creates the space you need to enjoy your home without moving.

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Single-Storey Extensions

Do you love your house but wish there was more of it? HAC Designs delivers single-storey extensions on time and on budget.

A single-storey extension is a cost-effective way to gain more space and light in cramped homes. We’re a one-stop-shop for designing and building extensions to suit a range of purposes. Enjoy customised spaces for utility rooms, kitchens, kitchen-diners, playrooms and WCs. All extensions – front, rear, side and wraparound – are available depending on your requirements and house type. We’re experts at designing the popular glass ceiling ‘orangery style’ look with bi-folding doors for an expansive, airy interior.

Single Storey Extension
HAC double storey extension

Double-Storey Extensions

Get a double-storey extension to give your home maximum floor space and increase its value by around 11%.

We design and build double-storey extensions to improve the quality of your life. Our two-storey extensions double the amount of extra space at a budget-efficient price. Our experienced architectural designers have plenty of ideas about how to make your new space work. We can either work with your chosen builders or complete the build for you ourselves. Our innovative techniques result in amazing spaces with front, rear, side and wraparound double-storey extensions.

Complete Rebuild

We’ll completely rebuild your conservatories and outbuildings to make your home bigger and better.

Do you have an outdated conservatory that’s too hot in the summer and too cold in the winter? We’ll knock it down and turn it into something more practical: an attractive and spacious extension where you and your family love spending time. Likewise, if you have an outbuilding that’s too small to convert, we’ll replace it. The result? An extension that seamlessly integrates with your home’s four walls, giving you the space you need for your growing family or new office.

HAC complete rebuild

Contact us for more information or a free consultation.

Telephone: 01276 402 444

    Our Processes


    Free Consultation

    Tell us about your property, project and initial ideas. Learn more about us and how we can make your vision a reality.



    We’ll pitch you our initial design with a price. We’ll advise you on designs, timeframes and building work, so you know what to expect.


    Planning permission advice

    We’ll support you with planning permission and building regulations. You don’t have the hassle of lots of different suppliers, traders and designers.



    When the building applications are complete, we’ll take care of the design (including 3D modelling).



    HAC Build is responsible for construction services. It’s the only stage left before you step into your transformed space and start making memories.