One of the most common questions we hear is: "How long will my loft conversion take?" The answer depends on several factors, including the type of conversion, whether planning permission is needed, and the complexity of your property. Let's break down the typical timeline.
The Quick Answer
Most loft conversions take 6–8 weeks from start to finish, including construction. However, if you need planning permission, add another 8–12 weeks. So the total timeline from initial survey to completion is typically 4–6 months.
Detailed Timeline Breakdown
Initial Survey & Quote (Week 1–2)
We visit your property, assess the roof structure, check for planning/conservation area issues, and provide a detailed fixed-price quote. This typically takes 1–2 weeks.
Design & Planning (Week 3–6)
Our architects create detailed drawings and submit for Building Regulations approval (always required). If planning permission is needed, we submit the application. This stage takes 2–4 weeks.
Planning Permission (If Needed) (Week 7–14)
If your property requires planning permission (e.g., in a conservation area), the council has 8 weeks to decide. Most loft conversion applications are approved. This adds 8 weeks to your timeline.
Construction (Week 15–22)
Once approvals are in place, construction begins. Most loft conversions take 6–8 weeks to complete, depending on complexity. Our team works efficiently while maintaining the highest standards.
Final Inspection & Handover (Week 23–24)
Building Control conducts a final inspection, and we complete any final touches. You receive your completion certificate and can enjoy your new loft space.
Timeline by Conversion Type
These timelines are for the construction phase only. If your property requires planning permission (e.g., in a conservation area), add 8 weeks for the planning process.
| Conversion Type | Construction Time |
|---|---|
| Velux Conversion | 4–6 weeks |
| Dormer Conversion | 6–8 weeks |
| Hip-to-Gable Conversion | 8–10 weeks |
Factors That Can Extend Your Timeline
- Conservation area: Adds 8–12 weeks for planning permission
- Listed building: Adds 4–8 weeks for Listed Building Consent
- Structural issues: May require additional work (e.g., roof repairs)
- Weather delays: Bad weather can impact construction timescales
- Building Control requests: Rare, but can add 1–2 weeks
Get Your Timeline Today
Every project is unique. Contact us for a free survey and we'll provide you with a detailed timeline specific to your property and conversion type.