Kitchen extensions
A single-storey room off the back of the house, with oak trusses overhead, roof lights and bi-fold or sliding doors to the garden.
Oak framed extensions in Oxfordshire & Berkshire
Kitchen extensions, orangeries and two-storey additions in green oak, cut and raised on your site by the same person from the first trench to the last tile.
An oak framed extension gives you a room with real character: exposed trusses overhead, a glazed gable to the garden and timber that looks better every year. I draw, build and finish each one myself, working across South Oxfordshire and North Berkshire from Whitchurch Hill, near Reading.
That includes the ground works. I dig the footings, lay the drainage and pour the slab before the frame arrives, so you deal with one company for the whole project and nothing waits on another trade.
Most of my extension work is the larger kind: kitchen extensions with a glazed gable, oak orangeries with a roof lantern, and two-storey entrance halls lifted into place with a telehandler. Every frame is cut for the house it joins and pegged together on site, the traditional way.
Oak framed extensions I build
Each frame is drawn for the house it joins. These are the shapes most of my extension work takes.
Glazed gable extensions
Full-height glazing in the gable end fills the room with light and shows the frame off from the garden.
Oak orangeries
A flat roof with a glazed lantern, curved oak braces and glazing on three sides, on a plinth to match the house.
Two-storey extensions
Double-height entrance halls and two-storey additions, with the frame lifted into place by telehandler and an oak gallery landing inside.
How an oak framed extension is built
Five stages on every job, and the same person on site for all of them.
Design
The extension is drawn up around your house, with the frame, glazing and roof agreed before any oak is ordered.
Ground works
I dig the footings, lay the drainage and pour the slab myself, so the base is ready when the frame is.
Framing
Posts, beams and trusses are cut and jointed from green oak in the workshop and laid out to check the fit.
Raising
The frame goes up on the plinth and is pegged together on site, with the telehandler for the heavy lifts.
Finishing
Roof, glazing, cladding and the inside finish, to the schedule we agreed at the start.
One company from the first trench to the finished room
The bigger framing companies cut a frame, deliver it and leave you to find a builder for the rest. I don't work that way. I'm on your job from the ground works through the frame raising to the glazing and cladding, and you deal with me directly the whole way through.
Green oak is oak used unseasoned. It's cut and jointed while the timber is still workable, then dries and hardens in place over the years. It suits extensions because the frame can be made to fit the house exactly, and the exposed timber is the finish.
Talk through your extension5.0
What extension customers say
We worked with Green Oak Buildings for almost a year on a large oak-framed extension, including all associated groundworks and landscaping. Allister delivered consistently high-quality workmanship throughout the project. The oak frame was built precisely to our specification, and we are absolutely delighted with the finished result. In addition to crafting the oak frame, Allister also carried out the groundworks and internal carpentry, completed the landscaping and project-managed every contractor involved from start to finish. Having everything coordinated so efficiently made the whole process much easier for us.
A professional building firm. Allister is a genuine guy - reliable, friendly and listened to our needs for our extension. His timber work is beautiful and is passionate about the details. Highly recommended.
Allister took on our Oak Orangery project after original contractors pulled out, site had tricky access but he found ways to make it happen, He turned up when he said he would and left the site in a clean and tidy state at the end of each day. Communication was good through out so would not hesitate to recommend his services in the future or contact him again if we want any future work
Recent oak framed extensions
Extension and orangery jobs photographed as they happened: the ground works, the frame going up and the finished room. The last two I framed and ran as part of a contract team.
Oak framed extension
Cowfields kitchen extension
A glazed-gable oak frame on a new slab, with the trenches dug, the trusses cut and the patio laid as one job.
Two-storey oak framed extension
Glazed oak entrance
A two-storey glazed entrance for a developer: framed in oak, lifted into place with the telehandler, glazed and the roof pitched.
Oak framed orangery
Flat roof oak orangery
A flat-roofed orangery with a glazed lantern, curved oak braces cut in the workshop and sliding doors to the garden.
Contract framing
Oak framed kitchen extension
A glazed gable to the garden and oak trusses over the kitchen, with roof lights and bi-fold doors down one side.
Contract framing
Orangery pool room
An oak framed pool room on a brick plinth: full-height glazing on three sides and a flat roof with a glazed lantern above.
Common questions
Do I need planning permission for an oak framed extension?
It depends on the size and your property. Some single-storey rear extensions fall within permitted development; two-storey extensions, larger builds, and homes in conservation areas or with listed status usually need a planning application. I will tell you which applies when I visit the site.
Do you do the ground works as well as the oak frame?
Yes. I do my own ground works on every extension: excavation, footings, drainage and the slab. I do not take on ground works as a separate job, but on my own builds it means one company handles the whole project from the first trench to the finished room.
How much does an oak frame extension cost?
It depends on the size, the amount of glazing, the roof and how much of the finishing you want me to do. I do not quote from a price list. I visit the site, talk through what you want and give a free, no-obligation quotation for the actual job.
Can an oak framed extension be built onto an older house?
Yes. The frame is drawn for the house it joins, and the plinth, cladding and roof tiles are chosen to sit alongside it. The orangeries and kitchen extensions on this page were all built onto existing houses.
Which areas do you build extensions in?
Oxfordshire and Berkshire, around 15 miles from Whitchurch Hill, near Reading, and a little further towards Didcot, Abingdon and Oxford. Home ground is the country around Pangbourne, Goring, Streatley, Upper Basildon and Yattendon, then Reading, Henley, Wallingford and Sonning Common.
Planning an oak framed extension?
Send me a few photos and a rough idea of what you want, or ask me out to look at the site. I'll quote the job properly, with no obligation.
Mon–Thu 8am–5pm · Fri 8am–4pm · Whitchurch Hill, near Reading · Oxfordshire & Berkshire
Other oak work
If an extension isn't the right fit, these are the other jobs I take on.
Oak Framed Garages
Single, double and larger garages built on your site, not cut, delivered and left.
Oak Garden Rooms
Home offices and living space in the garden, framed in oak and glazed to let the light in.
Oak Framed Porches
Traditional and contemporary porches, cut and pegged from solid oak.