Quick Overview: The Typical Timeline
| Stage | Estimated Duration |
|---|---|
| Initial Consultation & Brief | 1–2 weeks |
| Concept Design | 2–4 weeks |
| Planning or Permitted Development | 8–12 weeks (including prep) |
| Technical Design & Approvals | 4–8 weeks |
| Tendering & Contractor Selection | 3–4 weeks |
| Construction | 3–8 months (varies by size) |
Total Time: ~6–12+ months from first meeting to finished build
This can stretch longer for larger or more complex homes, or be quicker for modest extensions under permitted development.
Stage by Stage Breakdown
1. Initial Consultation and Briefing (1–2 weeks)
This is where it starts. We meet you (usually on site), talk through your needs, budget, and aspirations, and carry out a measured survey if needed.
We then develop a brief: what you want, what you need, and how you want the space to feel.
2. Concept Design (2–4 weeks)
We explore layout options, massing, and how to bring in light and flow. You’ll receive a concept pack with drawings and sometimes simple 3D visuals.
We review these with you and refine the direction.
3. Planning Application or PD Submission (8–12 weeks)
If your project needs planning permission, we prepare and submit the application. The council's statutory decision period is usually 8 weeks, but we allow extra time for preparation and feedback.
For permitted development projects, we may apply for a Lawful Development Certificate (LDC) to confirm compliance — typically faster.
4. Technical Design & Building Regulations (4–8 weeks)
Once planning is approved, we develop detailed technical drawings suitable for Building Control, tendering, and construction.
This includes coordinating with a structural engineer and any other consultants.
5. Tendering & Contractor Selection (3–4 weeks)
We issue the drawings to trusted builders, manage questions, and compare quotes. You select the contractor that best fits your needs and budget.
6. Construction (3–8+ months)
Obviously this time frame will vary depending upon the size and complexity of your build. A simple single-storey extension might take 3–4 months but a larger renovation or new-build will take 6–8+ months.
We offer contract administration services to help manage the build, check progress, and handle any issues calmly and clearly.
What Can Affect the Timeline?
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Planning delays or local authority backlogs
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Client decisions (pausing, refining or rethinking)
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Availability of consultants or builders
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Weather, especially for winter starts
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Scope changes once on site
We like to keep the process structured and transparent, to prevent nasty surprises and ensure that you always know what to expect.
How We Work
We take on a limited number of projects each year so that we can give yours the time and attention it needs. Our design process is collaborative and calm, with a clear structure that keeps things moving while allowing us space for creative thinking and discussion with you to find the best solution for your family.
We guide you through every step — from the first sketch to the final site visit.
Ready to Begin?
If you’re thinking about starting a project, the best time to get in touch is before you’re in a rush. Starting early gives you time to plan properly and avoid costly surprises later on.
Get in touch to see how we can help with your extension or new home.