Oak Framed Extensions
That Feel Like They’ve Always Been There
An oak framed extension is one of the few ways to add space without losing the character of your home. Whether you’re opening up a kitchen, adding a garden room, or extending a cottage, an oak frame gives a natural warmth and a sense of permanence that modern builds often struggle to match.
Because oak is a timeless material, it suits everything from period properties and farmhouses to newer homes that need a more classic finish.
Popular Oak Framed Extension Styles
What Does an Oak Framed Extension Cost?
Costs vary depending on size, specification and how much you’d like us to handle, but most projects fall into a few sensible brackets.
- Overall size (footprint and height)
- Glazing (amount, type, and whether it includes sliding/bi-fold doors)
- Roof design (pitched, vaulted, gable, complex junctions)
- Foundations and ground conditions
- Insulation and thermal specification
- Finishes (oak boarding, plastering, flooring, electrics, heating, joinery)
- Scope of works (oak frame only, oak frame + weatherproof shell, or full build)
If you share a rough size and a couple of photos (or drawings if you have them), we can give you a practical starting estimate and talk you through the best route for your budget.
"Working within your budget is something we do as standard"
Planning Permission and Building Regulations
Many extensions can be built under permitted development, but it depends on the property and the details of the design. Planning is more likely to be required if:
You’re in a conservation area
The property is listed
The extension is large, close to boundaries, or changes the roofline significantly
The design affects the character or setting of a traditional home
Even when planning permission isn’t needed, building regulations still apply. We can advise at the outset on what’s likely to be required and what information you’ll need to move forward with confidence.
How the Process Works
A good extension should be simple and well run. Here’s how most projects move from idea to build:
Initial conversation
Tell us what you’re trying to achieve, the style of the house, and the kind of space you want to create.
Site visit and measurements
We look at access, roof junctions, ground levels, and the best way to make the extension sit naturally with the existing building.
Design, drawings and approvals
We’ll work with you (and your designer if you have one) to develop a scheme that’s practical, buildable, and suits the home.
Oak frame manufacture
Once the design is agreed, the oak is prepared and the frame is made to suit the final drawings.
Erection on site
The frame is erected by experienced hands, with careful setting out so everything aligns correctly.
Weatherproofing and completion
From there, the project can move into roofing, glazing, insulation and finishes, depending on the scope agreed.
Timeframes and Lead Times
Every project is different, but most clients want to know two things: how long does it take to get started, and how long will the build take.
Timeframes depend on:
Whether planning is required
How quickly drawings and decisions are finalised
Manufacturing schedule and site access
Weather and groundworks
If you’re working to a deadline (family changes, a wedding, a new baby, selling a property), tell us early — sensible planning avoids stress later.
Green Oak Movement: What to Expect
Oak is a living material. A traditional green oak frame will season and settle over time, and small changes are part of its character.
This is planned for within the design:
Allowances are made for movement
Fixings and junction details are chosen carefully
The right glazing and roofing details prevent problems later
The result is a frame that looks right on day one — and even better as it matures.
Designed for Traditional Homes
Oak framed extensions are particularly suited to older properties because they can be detailed to match:
Low eaves and traditional roof pitches
Stone, brick, render, or timber cladding
Cottage proportions and established window styles
Existing outbuildings and farm settings
The aim is never to “bolt on” extra space — it’s to create an addition that feels properly considered.
What We Need From You for a First Estimate
If you’d like us to give a useful starting point, the following is ideal:
Your postcode / general area
A rough size (or a sketch with dimensions)
A couple of photos of the house where it will attach
Whether you have drawings or planning already
Any preference on glazing (e.g., bi-folds, sliders, roof lanterns)
Even if you’re at the early idea stage, that’s fine — we can guide you through the sensible next step.
Frequently Asked Questions
Do oak framed extensions suit modern homes?
Yes. They’re especially effective when you want a warmer, more characterful space that contrasts nicely with the existing house.
Can you match an older cottage or farmhouse?
In most cases, yes. The key is proportion, roof pitch, and careful detailing so the extension doesn’t overpower the original building.
Will the oak change colour?
Yes — oak weathers naturally. You can allow it to silver off, or treat it depending on the look you prefer.
Is an oak framed extension warm enough for year-round use?
Yes. The comfort comes from the overall build-up: insulation, glazing specification, airtightness and heating design.
Do I need an architect?
Not always, but drawings are usually needed for approvals and accurate pricing. We can work with your chosen designer or advise on the best approach.
How long does the oak frame erection take?
Often quicker than people expect, once everything is prepared, erection is efficient. The overall programme depends more on groundworks, weatherproofing and finishes.
Can you do supply-only?
Many clients choose supply and erection, but options can be discussed depending on your build arrangement.
Will the extension look like it’s always been there?
That’s the goal. The best oak extensions respect the existing house and use traditional proportions and materials where appropriate.
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