About Ash Island Builders

We build loft conversions, extensions and refurbishments across London from our base in Chiswick. Tell us what you want to change, and we will help you work through the plans, permissions and building work.

Before you commit, we explain what the quotation includes and who will be involved, including any specialist trades or advisers. You can read how the project progresses from the first conversation to handover.

We are FMB registered and offer a five-year build guarantee. See our completed work or discuss your project. Our office is open Monday to Friday, 8am–6pm.