
Bespoke Oak Buildings
Oak Framed Garden Rooms
Year-round rooms that bring the garden indoors
Overview
Handcrafted, entirely bespoke
Fully insulated, well-glazed and finished to a residential standard, our oak framed garden rooms work as offices, studios, gyms and snug rooms, a true oak framed extension of your home, set in the heart of your garden. These bespoke oak buildings add valuable, usable space without the upheaval of a conventional build.

Typical size
4m x 3m-8m x 5m
Lead time
12-18 weeks
U-value
Building Regs compliant
Bespoke
Designed around your use
Tailored
Insulation specification
Coordinated
Power, data and heating
Planning
Support available
Why Choose Southern Oak
Built to a standard, not a price
Year-Round Comfort
Fully insulated, heated and glazed, so it's comfortable in every season.
Bespoke Interior
Every finish, fitting and layout shaped around how you'll use the space.
Traditional Oak Frame
Exposed oak posts, beams and braces bring warmth and character.
Nationwide Installation
We design, make and install garden rooms across the UK.
Building Regs Compliant
Full electrical, insulation and structural certification.
Adds Property Value
A well-built oak garden room is a permanent investment in your home.
Why Southern Oak
Why choose us for your oak framed garden rooms
Clear, quotable answers on how we build, where we work and what sets Southern Oak apart.
Why choose Southern Oak?
Southern Oak coordinates the process from initial design and planning through specialist frame production and on-site installation. Planning support is provided with Planning By Design where required.
How are Southern Oak's buildings constructed?
Frames are produced from selected green oak using traditional mortise-and-tenon joints through Southern Oak's specialist sawmill partner in France. Experienced specialist installation teams then carry out the on-site work.
What areas do Southern Oak cover?
We design and install oak framed buildings nationwide across the UK, England, Wales and Scotland, with particular focus on Kent, Surrey, Essex, the Midlands, Oxfordshire, Buckinghamshire, Berkshire, Wiltshire, Devon, Cornwall, Yorkshire, Northumberland and Wales. Wherever your plot, we'll come to you.
Will This Need Planning Permission?
Every property and project is different. Before commissioning drawings, purchase a Planning Feasibility Appraisal and let our team assess the likely planning position.
Indicative pricing
Oak building cost calculator
A transparent guide to what your project might cost. Every Southern Oak building is bespoke, so treat these as starting figures, we give you a fixed, itemised quote after your consultation.
Oak Garden Room
Your guide price
£29,600 - £35,520
+ VAT, supply & install (indicative)
Figures include the oak frame, roof and standard installation. Groundworks, glazing and planning fees vary by site.
A £250 + VAT Planning Feasibility Appraisal is credited against a full planning application if you proceed through Southern Oak.
This calculator provides indicative ranges only and is not a quotation or offer. Final pricing depends on site access, ground conditions, specification and local authority requirements.
Explore Options
Types of oak framed garden rooms
Every project is bespoke. These are common configurations to inspire your build.
The Project Journey
From consultation to completion
A transparent, six-stage process. You'll know exactly what happens at every step.
Consultation
We visit your site, listen to what you have in mind and survey the land. You'll get honest advice on what's possible.
Design
Bespoke drawings and 3D visuals bring your project to life. Every dimension is tailored to your home.
Planning
We handle planning permission and building regulations on your behalf, from drawings to submissions to approvals.
Manufacturing
Your frame is hand-cut from selected green oak, using traditional mortise and tenon joinery.
Installation
Our team raises and finishes your building on site, with precision and care.
Completion
We hand over a building made to last for generations, one that grows more beautiful with age.

Planning Guidance
We handle the planning for you
Garden rooms under 30m² are often permitted development when sited behind the principal elevation. Larger rooms, or those used as self-contained accommodation, can need planning permission. Southern Oak coordinates its planning service with Planning By Design, covering the checks, applications, building regulations and related professional input where included in the agreed quotation.
Check Your ProjectPlanning Resources
Understand the planning rules
Explore our planning hub before you commission drawings. Knowing where you stand on permitted development, boundaries and the application process can save time and cost later.
Nationwide Service
Oak framed garden rooms across the UK
From the Home Counties to the Highlands, we design and install bespoke oak buildings wherever you are.
People also ask
Quick answers about oak framed garden rooms
Straight answers to the questions homeowners ask most.
Do I need planning permission for an oak garden room?
Garden rooms under 30 m² sited behind the principal elevation are often permitted development. Larger rooms, or those used as self-contained accommodation, can require planning permission, we check and handle any application for you.
How long does an oak garden room take to build?
A typical oak garden room takes 12-18 weeks from consultation to handover, with the frame prepared off site and the on-site install taking a matter of days.
Questions
Frequently asked
Yes, when it is specified for year-round use. Insulation, glazing, heating and electrical requirements are agreed for the individual project and confirmed in the quotation.
Investing in oak framed garden rooms
Your oak framed garden rooms, built to last, protected throughout
100+ year design life
Every oak frame is engineered to outlast generations, growing stronger as the timber seasons.
Hand-cut traditional joinery
Mortise and tenon joints, pegged and drawbored, no metal brackets, no shortcuts.
Coordinated planning support
Permitted development checks, applications and building regulations coordinated with Planning By Design, where included in your quotation.
Sustainably sourced oak
Selected European green oak from responsibly managed forests, traced to source.
Secure staged payments
Transparent, milestone-based payments protect your investment at every stage of the build.
Spread the investment
Transparent staged payments keep you in control, and our £250 + VAT Planning Feasibility Appraisal is credited against a full planning application if you proceed through Southern Oak.
How the appraisal worksReady to begin your oak framed garden rooms?
Book a no-obligation consultation and let's design something extraordinary together.