100+ Granny Annexes Installed in the South East
Your Dedicated Support Partner
Our four-step Signature Move process guides you smoothly from initial consultation through planning approval to the final build of your annexe.
Step 1
Initial Consultation
Our process starts with an online consultation to understand your vision. We’ll then offer a detailed, fixed-price quote that remains valid for six months. Following this, we’ll conduct a thorough site survey where you can personalize your annexe and select from various design options to create a home that reflects your individual style.
Step 2
Planning Made Simple
Our NAPC planning experts manage the entire planning permission process, interfacing directly with local authorities. We’re so confident in our success that we offer a Money Back Planning Guarantee – you’ll receive a full refund if your application is denied.
Step 3
Build & Delivery
Our customer support team will guide you through the build process, providing consistent updates and addressing your queries. Dedicated project managers will ensure your Grannexe annexe is delivered efficiently, allowing you to focus on your upcoming move.
Step 4
Moving In & Aftercare
On move-in day, a team member will help you settle in and can arrange a handyman for final adjustments. You’ll be invited to join the Open Grannex community, and after six months, we’ll conduct a follow-up to ensure your complete satisfaction, all backed by a comprehensive 10-year build guarantee.