Running out of space at home is stressful — and the thought of a long, uncertain build can be enough to stop many homeowners from acting. Our extension services in Dorset are designed to remove the guesswork: practical design, planning help and build oversight that deliver extra space, increased value and a project you can actually enjoy.
You may also find House planning in Dorset: Get approval, save time and build with confidence useful for related guidance.
Why Dorset homeowners choose an extension
Extensions are the fastest way to gain usable space without the upheaval of moving. Typical problems we solve include:
- Growing families needing more bedrooms or a larger kitchen.
- Working from home and needing a quiet, flexible workspace.
- Desire to add a utility room, garden room or accessible ground-floor facilities.
- Improving natural light, thermal comfort and energy efficiency.
Rather than a one-size-fits-all approach, our extension services in Dorset start by understanding how you live now and what you want from the space in five years’ time.
What our extension service includes
We take a joined-up approach so you get a clear route from idea to finished space:
- Feasibility and concept design — clear sketches and options that respect your budget and the character of your Dorset home.
- Planning and approvals — advice on permitted development vs full planning and help preparing applications to avoid delays (see our guide on house planning in Dorset).
- Technical drawings and specifications — building regs drawings and details that builders can price accurately.
- Contractor selection and tendering — we recommend trusted local builders and manage the tender so you compare like-for-like quotes.
- Project administration and site supervision — regular site visits to keep quality high and costs predictable.
Benefits and real outcomes
When done well, an extension delivers more than square metres. Expect:
- Immediate usable space tailored to your needs — a bright kitchen-diner, home office or family room.
- Increased property value and better marketability when you decide to sell.
- Improved energy performance and lower running costs with modern construction methods.
- Less stress and clearer timelines because a professional team is coordinating the project.
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Common objections — and how we handle them
Thinking about an extension often raises a few understandable concerns. Here’s how we address them:
- “It will take ages and disrupt our life” — We produce realistic programmes and work with builders who prioritise site cleanliness, phased access and predictable staging to minimise disruption.
- “What if planning is refused?” — Early feasibility checks identify likely constraints. Where needed we prepare supporting drawings and statements to maximise the chance of approval and can advise on permitted development options to avoid full planning applications.
- “Costs could spiral” — Detailed specifications and competitive tendering reduce surprises. Our contracts include defined payment stages tied to milestones so you only pay for work completed.
- “I don’t know what design will suit my home” — We present two to three concepts that show form, materials and likely appearance so you can choose with confidence.
How to get started — a simple, low-risk process
We make the first step low-effort: an initial conversation followed by a short site visit to scope the project. Typical next steps are:
- Free initial call to discuss your goals and budget.
- Site visit and feasibility sketch with cost range.
- Design development and planning advice.
- Tendering and contractor selection.
- Build phase with regular updates and site checks.
See examples of completed projects and the way we work on our Our Work and The Process pages. When you’re ready to talk, our Contact page makes it simple to arrange a site visit.
We understand local planning teams across Dorset and design with the county’s character in mind, so your extension will feel like a natural part of the existing house rather than an afterthought. That local knowledge keeps applications smoother and builds that reflect local materials and detailing.
Ready to add space that works for you? Start with a short, obligation-free chat and a practical feasibility sketch. If you want inspiration first, browse our recent projects and read about gaining planning approval in Dorset. When you’re ready, contact us to book a site visit and get a clear, written plan for your extension.
You may also find About useful for related guidance.
Frequently asked questions
How long does an extension in Dorset usually take from design to completion?
Timelines vary by size and complexity. A simple single-storey rear extension can be designed and built in 3–5 months, while larger two-storey projects or those needing full planning may take 6–12 months. We provide a realistic programme at the feasibility stage and update it before construction starts.
Do I always need planning permission for an extension in Dorset?
Not always. Many smaller extensions fall under permitted development rights, but restrictions apply depending on property type and conservation area status. We assess your site early and advise whether you need full planning permission or can proceed under permitted development.
How much will an extension cost per square metre?
Costs depend on specification, structure and finishes. As a rough guide, basic single-storey extensions often start at a mid-range cost per square metre, while high-end finishes or complex structural work increase the price. We provide cost ranges during feasibility and fixed-price tenders before work begins.
Can you manage builders and trades on my behalf?
Yes. We can run a full tender process, check contractor references, and provide site supervision and contract administration throughout construction so you have one point of contact and greater confidence in delivery and quality.