We are members of industry federations
We include end-to-end project management
Professional work to increase your property value
Build the extra space your home deserves
Space can run out quickly, especially as your family grows or your lifestyle changes. We specialise in house extensions that give you the room to breathe, whether you dream of an open-plan kitchen-diner, a new bedroom, or a light-filled family room.
By managing every step from planning to finishing, we take the stress out of expanding your Southampton home. Ao Building Ltd's extensions are tailored to match your property style and needs, ensuring everything feels seamless and solid. We understand that you want more than just extra square metres; you want a space that really works for your day-to-day life.
House extension specialists you can rely on
We know that taking on a house extension is a big decision, and you want it done right the first time. As members of respected bodies like the Federation of Building Specialist Contractors, we’re committed to safe, quality construction that stands the test of time. Our team coordinates everything, from securing permissions to the final coat of paint, so you never have to chase different trades. You get one point of contact, clear timelines, and a finish that blends perfectly with your existing home, all delivered with minimum fuss in Southampton.​
Long-term benefits of extending your home
Well-planned house extensions add space and value to your home for years. Skip the hassle and expense of moving and unlock your home's potential. With our professional building standards, your new extension feels like it’s always belonged and can adapt as your needs evolve. We help you make the most of your site, so your investment pays off in comfort, function, and future resale value. We also offer building refurbishments to modernise and improve existing spaces throughout your property.
Reliable, honest, and skilled builders. AO Building completed our renovation project on schedule and the final result looks amazing.
- Peter Thompson, Southampton, Hampshire
Plan your house extension with our trusted team
Give us a call to discuss your new space.
