Double Storey Extensions in Dublin

A double storey extension adds two levels of new space to your home, typically extending both the ground and upper floors. It’s ideal for expanding living areas and creating extra bedrooms or bathrooms upstairs.

Yes, most double storey extensions in Dublin require planning permission. Our team will assist you with the entire application process, ensuring compliance with local regulations and helping you avoid delays.

The cost varies depending on the size, design, materials, and complexity of the build. At OS Holding, we provide transparent, itemised quotes and a price match guarantee to ensure you get the best value.

A typical double storey extension can take between 10 to 16 weeks from start to finish. Timelines depend on the project scope and planning approval. We deliver on time with efficient scheduling and project management.

In many cases, yes. We aim to minimise disruption and maintain a clean, safe work environment. Your dedicated project manager will work with you to ensure a smooth experience throughout the build.

We cover all areas in Dublin, including Southside, Northside, and surrounding suburbs. Whether you’re in Sandyford, Rathfarnham, Clontarf, or anywhere else, OS Holding is ready to take on your project.

Side extensions work well if you have unused land beside your home. During your free consultation, we’ll assess your property layout and advise on the most effective extension solution.

Our turnkey service includes site surveys, design and planning, planning permission support, full construction, internal finishing, and optional smart home features.

Yes, a well-built double storey extension significantly increases property value. It also improves functionality, comfort, and the appeal of your home to future buyers.