What to Expect When Planning Your Loft Conversion: Get the Timeline
A loft conversion is one of the most effective ways to add valuable space to your home, especially in the North West, where many properties in places like Manchester and Preston are well-suited to converting unused roof space.
But how long does the process actually take? Whether you're considering a Dormer loft conversion, a Velux loft conversion, a full roof lift, or a Hip to Gable extension, understanding the typical timeline can help you plan ahead with confidence.
Here’s a step-by-step guide from the initial idea through to the final sign-off, based on what homeowners in the North West can usually expect.
Step 1: The Idea Stage (Weeks 1–2)
Everything starts with a thought: Could our loft space work harder for us? At this stage, it’s all about exploring possibilities. You might be imagining an extra bedroom, a home office, or even a second living area.
Raise the Roof is here to help guide you through the early questions, offering advice and examples of what works best for different property types across Greater Manchester and Lancashire. We’ll help you decide whether a Dormer, Velux, roof lift or Hip to Gable loft conversion is the right fit for your home and budget.
Step 2: Consultation and Feasibility (Weeks 3–4)
After you’ve done some initial research, the next step is to book a professional consultation. A site visit will assess the suitability of your loft, considering roof height, structure, and access, and determine whether planning permission is likely to be needed.
This is a great opportunity to get expert input on what’s realistic and begin shaping your vision into a practical plan.
Step 3: Design, Drawings and Permissions (Weeks 5–8)
Once you’ve chosen your preferred type of conversion, architectural drawings and structural calculations are produced. These are essential for both cost estimates and approvals.
Depending on your property and the design, you may need:
Planning permission (some loft conversions in Manchester and Preston may fall under permitted development)
Building Regulations approval
A Party Wall Agreement if your home is terraced or semi-detached
Most of this will be handled by your architect or builder, but it’s good to be aware that approval processes can take several weeks.
Step 4: Quote and Contract Agreement (Weeks 9–10)
With drawings and permissions in place, a final quote is prepared. This will include a detailed breakdown of what’s included in the build. At this point, the contract is signed, timelines are agreed, and the build slot is secured.
Make sure to review what’s covered, such as insulation, electrics, and finishings, so there are no surprises later.
Step 5: Construction Begins (Typically 6–8 Weeks)
The build phase varies slightly depending on the type of loft conversion. Here’s what a typical schedule might look like for a property in the North West:
Weeks 1–2: Installing steel supports and floor joists
Weeks 3–4: Building the Dormer or adjusting the roof (for roof lift or Hip to Gable conversions)
Weeks 5–6: First fix plumbing and electrics, insulation and boarding
Weeks 7–8: Plastering, decorating, and finishing touches
Velux loft conversions tend to be quicker as they don’t involve structural changes to the roof. Roof lift conversions take a little longer due to the complexity of raising the roofline.
Throughout the build, your contractor should keep disruption to a minimum. Most clients are able to stay in their homes during the works.
Step 6: Final Checks and Completion (Week 9+)
Once the build is complete, a final inspection will ensure the project meets Building Regulations. You’ll receive a completion certificate, which will be important for both your peace of mind and for any future sale or remortgage.
In Summary
From your first idea to the final handover, a loft conversion in the North West typically takes around 10–12 weeks, plus some lead-in time for design and approvals. Whether you're based in Manchester, Preston or anywhere in between, Raise the Roof can help you navigate each stage, offering expert advice and tailored designs that make the most of your space.
If you’re considering a Dormer, Velux, roof lift or Hip to Gable loft conversion, and want a clear, realistic timeline, get in touch for a friendly, no-pressure chat.