Pricing an Oak Frame Building

If you are planning an oak frame project, understanding the costs is essential.

This guide covers the average prices for oak frame houses, extensions and outbuildings, along with the key factors that influence your final build cost.

Whether you are budgeting for a new home, adding extra space, or creating a garden room, here is what to expect when pricing an oak frame building.

How much does an oak frame cost?

We do not provide a “one size fits all” kit or oak frame price list. This is because we know that every site and every client has their own specific requirements.

We focus on one thing: the oak frame itself. As a result, we do not handle groundworks, roofing, windows, insulation, cladding or internal fit-out. We work closely with your architect or main contractor to ensure everything integrates smoothly. We also have trusted partners we work with regularly who we often recommend to clients.

For many projects we are happy to provide initial estimates. Once designs become formalised and drawings become available, we will then be happy to offer a formal quotation on a fixed price basis.

Please get in touch to discuss your project or any questions you may have about pricing an oak frame, so we can put a quotation together for you.

Moving forward

If you want to move forward we would ask for a 10% deposit to be made in order for us to book you into our schedule and finalise the drawings.

Following the completion of the drawings, structural calculations and agreement by all parties we would ask for a further payment of 60% to be made. Following this payment the oak order will be placed and the framing process will begin in our yard.

The remaining 30% due is payable once all installation is complete and you are satisfied with all work undertaken by Sackville Oak Frames.

Payment Structure

We ask for the following:

10% to book a slot in our schedule
60% on drawing sign off, with all parties & commencing framing in our yard
30% On-Site Completion

How much does an oak frame house or extension cost?

If you are looking into building an oak frame home or extension, one of the first things you will want to understand is the cost, especially the cost of the oak frame itself.

At Sackville Oak Frames, we design, craft and erect high-quality green oak frames for homes, extensions, garden rooms and outbuildings across Kent, Sussex and the South East.

Oak frame house cost (Frame Only)

The cost of an oak frame house depends on the size, design and complexity of the structure.

As a guide, you can expect to pay: £2,200 to £3,000 per square metre of internal floor area for the oak frame only. This includes:

Full design and detailing of the frame
Fabrication in our Kent workshop
Delivery to site
On-site raising and erection of the frame

We don’t use kits or CNC machines; every joint is cut by skilled craftsmen using time-tested methods.

What’s Not Included?

We supply and erect the oak frame only so the following elements are not included in our pricing:

Groundworks and foundations
Brickwork, cladding, or roofing
Windows and doors
Internal fit-out (plumbing, electrics, plastering, etc.)
Planning applications and full architectural services

We work closely with homeowners, builders and architects to ensure the frame fits seamlessly into the wider build.

Oak frame extension cost (frame only)

If you are planning an oak extension such as a garden room, oak framed kitchen extension or two-storey addition, the same pricing applies.

Expect to budget from £2,500 per square metre for the frame-only element, depending on complexity, roof design and glazing features.

We will quote based on your drawings or initial ideas and can advise on how to design for efficiency and structural integrity.

What affects the cost of an oak frame extension?

Several key factors influence the cost of an oak frame extension.

Overall size of the structure
Number of storeys
Complexity of the roof and frame design
Features such as curved braces, dormers, or vaulted ceilings
Inclusion of oak joists, trusses, or purlins
Site location and access condition
If you are working in a sensitive area or on a listed property, there may be extra costs for planning, surveys or specialist materials.

Clients often come to us with an initial idea, and we help shape it into a cost-effective, buildable design without compromising character.

Is oak more expensive than other builds?

It can be. Compared to a standard block or timber frame, an oak frame will usually come in a little higher. But it’s not just about cost per square metre. You are getting something with character, warmth and real longevity.

You can find out more about the benefits of building an oak frame here.

Every frame we make at Sackville Oak Frames is hand-crafted from green oak using traditional methods. No mass production. No shortcuts. Just skilled framers building something that will last for generations.

Planning your oak frame project

Before you get too deep into design, it is worth thinking through a few practical things:

Have a ballpark budget in mind
Add a bit of a buffer (10–15%) for the unexpected
Look into local planning permission
Talk to people and professionals who have done it before; we are always happy to share advice and previous client experiences
We work closely with clients at every stage, from first sketch to finished oak frame and can help you make sense of it all.

Why Choose Sackville Oak Frames?

We specialise in traditional green oak frame construction, not general building.

All frames are bespoke, not prefabricated kits
Crafted by hand in our Kent-based workshop
Designed with structural efficiency and elegance in mind
Built to last for generations
Honest, transparent pricing with no unnecessary extras
We have worked on hundreds of oak frame homes and extensions across the South East, always focusing on quality, integrity, and timeless craftsmanship.

Ready to take the next step?

If you’re looking for honest guidance and a quality oak frame, we would love to hear from you about your plans.

Whether it’s a full house build or a smaller extension, we will help you understand the costs and what’s involved.

Together we can create something truly bespoke; built by hand, built to last. No kits. No compromise.