If you’re planning a house extension in Hampshire, you’re probably asking:
👉 “How long will the whole thing take?”

Here’s a realistic breakdown — from idea to move-in — based on common Hampshire extension types.

⏱ Average Project Timeline: 6–10 Months

1. Initial Consult & Design – 2 to 4 weeks

Includes site visit, sketches, and concept planning.

2. Planning Application – 8 to 12 weeks

Depends on local council response (longer in conservation areas like Winchester or South Downs).

3. Technical Design & Tendering – 2 to 4 weeks

Your architect prepares detailed drawings for builders to quote.

4. Build Phase – 8 to 20 weeks

• Small rear extension: 8–10 weeks
• Two-storey or wraparound: 14–20 weeks
• Garage conversion: 6–8 weeks

5. Snagging & Finishing – 1 to 2 weeks

Final fixes, inspections and handover.

🧠 What Can Delay a Project?

• Planning permission refusals
• Late material deliveries
• Weather issues
• Changes to the design during construction

Your architect can help prevent delays by managing the project from the start.

✅ Final Word

Set realistic expectations and work with a team that plans ahead. A well-organised Hampshire architect will keep your extension on track — and help you enjoy the process.