An oak frame kit is the wooden skeleton of a building, cut and jointed in a workshop, numbered, and delivered on a lorry for a builder (or a confident DIYer) to put together on your site. Buying the kit instead of paying a firm to do the whole job is the usual way to bring the cost of an oak garage, porch or garden room down.
None of the kit makers below is in Surrey itself, but all of them deliver here, and most are an hour or two away in Sussex or on the Kent border. Prices, contents and delivery terms come from each firm's own website, read in October 2026. If you would rather have someone design and build the whole thing, see our guide to oak-framed buildings in Surrey.
What a kit costs
Only some kit makers publish prices; the others give a quote within a day or two, or through a design tool on their website. Watch the VAT: Round Wood shows prices with and without it, and Crown Oak's pages don't say.
- Porch kit (Crown Oak)
- Small roof over the door, 1.2m × 0.9m£1,650
- Open porch, 1.8m × 1.2m£2,640
- Porch with glass sides, 2.4m × 1.8m: £4,158. Roof tiles extra
- Oak carport (Crown Oak)
- One car, flat roof, 3m × 5.3mfrom £3,000
- Two cars, 5.5m × 5.3mfrom £5,500
- One-car garage kit (Round Wood)
- From £3,650 before VAT (£4,380 with VAT) for a gable-roofed bay
- Up to £6,100 (£7,320) with a log store and a hipped barn-style roof
- Two-car garage kit (Round Wood)
- From £5,950 before VAT (£7,140 with VAT)
- £8,400 (£10,080) for its biggest two-and-a-half-bay design with a log store
- Garage with a room above (Round Wood)
- Two cars £18,200 before VAT (£21,840 with VAT)
- Three cars(£26,640)£22,200
- Four cars(£31,440)£26,200
- Garage frames (English Heritage Buildings)
- Most garage frames £5,000–£35,000, including the engineer's calculations
- Oak garden room (Sussex Oak Structures, 2026)
- Built and closed in, without foundations, electrics or inside finishing: 3m × 3m£20,000–£30,000
- 4m × 5m £30,000–£45,000. A frame on its own costs roughly 25–35% less
How much does doing it this way save? Sussex Oak Structures reckons buying a garden room frame on its own, rather than having it put up, saves roughly 25–35%. For comparison, a finished two-car oak garage with a room above costs £95,000–£150,000 on its 2026 figures. The kit is only part of that bill, as the next section shows. All these prices, and those of firms that build the whole thing, are gathered on our page of oak building prices in Surrey.
What comes in the kit, and what doesn't
Kits differ, so read the list for the one you are pricing. Round Wood's garage kits come with the oak frame (posts, beams and curved braces), softwood wall timbers, rafters already cut to length, treated feather-edge boards for the outside walls (overlapping planks, thicker at one edge), a fixings pack and granite pads for the posts to stand on. Crown Oak's garage kit includes the oak frame, rafters, wall timbers and outside boards, the oak pegs, nails and bolts, instructions and working drawings. Oak Frames Direct's prices are for the frame alone, with nothing else.
Things you should expect to pay for on top: the concrete base or foundations, which the kit makers don't supply; roof tiles or shingles (Crown Oak prices tiles separately, and Round Wood lists roof coverings as options); garage doors, windows and side doors; delivery; and VAT where it isn't included. Then there is the labour to put it up, unless you do it yourself.
Most makers put each frame together in the workshop first, then take it apart and number the joints so it goes back together on site the same way. Round Wood and Crown Oak both say they do this.
Who puts it up?
Green oak beams are heavy and the joints are tight, so most people use a builder or carpenter. You have three routes. Some makers will put it up themselves: Crown Oak sends its own carpenters once your groundworker has laid the base to its exact measurements. Others recommend builders they know: English Heritage Buildings, Round Wood and Oakmasters all do. Or you hire your own local builder and give them the instructions.
Check what that choice does to the guarantee. English Heritage Buildings' 10-year guarantee on the frame only applies if one of its recommended builders puts it up.
Delivery
Expect a wait of six weeks to over three months, as kits are made to order. English Heritage Buildings and The Porch Specialist quote six to eight weeks after you approve the drawings, Oakmasters eight to ten weeks, and Round Wood eight to fourteen. A frame arrives on a large lorry: Round Wood asks you to fill in a questionnaire so it can check its vehicle can reach your site, which is worth thinking about on a narrow Surrey lane.
Planning permission and building regulations
A kit building follows the same rules as any other. A separate single-storey garage or garden room usually doesn't need permission from the council if it stays under 2.5 metres high where the roof meets the walls, under 4 metres at the top with a roof sloping both ways (3 metres with other roofs), and under 2.5 metres in total if it is within 2 metres of your boundary. It can't go in front of the house. In the Surrey Hills and conservation areas the rules are tighter, and listed houses always need permission. A garage with a room above always needs it.
Round Wood says all its single-storey garage designs stay under 4 metres at the top, and many are under 30 square metres. That matters because a separate building of 15 to 30 square metres normally escapes building regulations (the council's separate safety check) only if it is at least a metre from every boundary; above 30 square metres it will need approval. A porch is usually allowed without permission if it covers no more than 3 square metres, is no more than 3 metres high and is at least 2 metres from a boundary next to a road. Our oak porches and oak garages pages explain the rules in full.
Seven oak kit makers that deliver to Surrey
Round Wood of Mayfield
Mayfield, East Sussex
A timber yard and showroom near Mayfield with the clearest kit price list we found: almost 50 self-build garage designs, each with its price shown on the website. It can recommend installers if you don't want to put it up yourself. Its porches are priced by quote.
- Kits
- Oak garages for one to four cars, L-shaped garages, garages with a room above, plus porches, gazebos and other buildings
- Prices
- One-car garage from £3,650 before VAT (£4,380 with VAT)
- Garage with a room above(£21,840)from £18,200
- Delivery
- Most kits 8–14 weeks
- Delivery cost worked out at checkout, to mainland England and Wales
- Contact
- 01435 860260 (oak frames)
Crown Oak Buildings
Edenbridge, on the Kent–Surrey border
Its design tool on the website lets you draw your own garage and emails you a full price breakdown straight away. Porch prices are shown with kit and fitting listed separately, so you can see exactly what the labour adds: £1,320 to fit its open porch kit.
- Kits
- Garages (one or two storeys), carports, porches, gazebos, pergolas, garden rooms and home offices
- Ways to buy
- A kit for your builder or yourself
- Or it puts up the frame on a base you arrange
- Or, near its Kent and East Sussex workshop, the whole job
- Contact
- 01732 866910
English Heritage Buildings
Woods Corner, East Sussex
A frame maker with about 30 standard garage designs from one to eight cars. Its prices include the engineer's strength calculations for your site.
- Kits
- Ready-designed frames in oak and Douglas fir (another strong timber), including garages
- Delivery
- 6–8 weeks after you approve the drawings
- Guarantee
- 10 years on the frame, if one of its recommended builders puts it up
- Contact
- 01424 838643
Oak Frames Direct
Woods Corner, East Sussex
Sells mainly to builders and carpenters, in oak and Douglas fir. Its online tool lets you set the size and roof style and gives a price that includes the engineer's calculations. Planning drawings are available if you need them.
- Kits
- Garages for one to four cars, with or without a room above
- L-shaped and straight garage blocks
- Porches
- Lean-tos
- Garden rooms
- Gazebos and pergolas
- Prices
- Through its online builder
- Prices are for the frame only, without delivery or VAT
- Contact
- 01424 838500
The Porch Specialist
Woods Corner, East Sussex
A porch-only kit business. Its homepage advertises porches from £688, with no detail on VAT or size, so ask what that price buys.
- Kits
- Oak porches fixed to the wall, standing on the ground, on a low or high brick wall, or full height
- Terms
- Made to order, ready 6–8 weeks after you approve the drawings
- 20% deposit
- Delivery priced separately, or collect from its East Sussex factory
- Contact
- 01424 838500
Oakmasters
Partridge Green, West Sussex
A family firm that only makes kits, cut by computer-controlled machines in Sussex, for your builder to put up; it can suggest fitting teams. It gives a 12-year guarantee on its oak frames.
- Kits
- Garages and outbuildings, porches, garden rooms, extensions, roof frames and whole houses
- Prices
- Quoted within 24–48 hours
- The price depends largely on how much is oak and how much softwood
- Delivery
- 8–10 weeks
- Contact
- 01444 455455
Sussex Oak Structures
Near Horsham, West Sussex
Mostly designs and builds the whole building, but says a supply-only oak frame saves roughly 25–35% if you have your own builder, so ask if you want a kit.
- Oak garden room (2026)
- Built and closed in: 3m × 3m£20,000–£30,000
- 4m × 5m£30,000–£45,000
- A frame on its own (supply only) saves roughly 25–35%
- Contact
- 01293 851287
Cheaper: timber instead of oak
If oak is over budget, a softwood garage kit costs much less. Passmores lists single timber garages from £3,903, and Power Sheds a log-cabin style garage kit from £5,009. Both are on our page about oak and timber garages in Surrey.
Before you order
Get the base priced before you choose a kit: a groundworker needs the exact measurements, and Crown Oak warns its carpenters can only put the frame up if the base matches them. Ask whether the price includes VAT, delivery, roof covering and doors. Check the heights against the planning limits. Make sure a lorry can reach your drive. And decide who will put it up before you order, because that can affect the guarantee.
Common questions
How much is an oak frame garage kit?
Round Wood of Mayfield lists one-car oak garage kits from £3,650 before VAT (£4,380 with VAT), two-car kits from £5,950 (£7,140) and two-car garages with a room above from £18,200 (£21,840). English Heritage Buildings says most of its garage frames cost £5,000–£35,000. Delivery, the base, roof tiles and doors are usually extra.
Who sells oak frame building kits near Surrey?
Crown Oak Buildings (Edenbridge, on the Kent–Surrey border), Round Wood of Mayfield, English Heritage Buildings, Oak Frames Direct and The Porch Specialist (all East Sussex), and Oakmasters (Partridge Green, West Sussex) all make oak frame kits and deliver to Surrey.
What is included in an oak frame kit?
It varies. Round Wood's garage kits include the oak frame, softwood wall timbers, pre-cut rafters, treated feather-edge outside boards, fixings and granite pads for the posts. Crown Oak's include the oak frame, rafters, wall timbers, outside boards, pegs and bolts, instructions and drawings. Oak Frames Direct prices the frame alone. The base or foundations are not included.
Can I put up an oak frame kit myself?
Kits come numbered with instructions, and Round Wood and Crown Oak put each frame together in the workshop first. But green oak is heavy, so most people use a builder. Crown Oak can send its own carpenters, and English Heritage Buildings, Round Wood and Oakmasters recommend builders. English Heritage Buildings' 10-year frame guarantee only applies if one of its recommended builders puts it up.
How much does an oak porch kit cost?
Crown Oak Buildings lists a small oak roof over the door (1.2m × 0.9m) at £1,650 as a kit, an open porch (1.8m × 1.2m) at £2,640 and a porch with glass sides (2.4m × 1.8m) at £4,158, with fitting from £1,320 and clay roof tiles extra. The Porch Specialist advertises porches from £688.
How long does an oak frame kit take to arrive?
Kits are made to order. English Heritage Buildings and The Porch Specialist quote six to eight weeks after you approve the drawings, Oakmasters eight to ten weeks, and Round Wood eight to fourteen weeks for most kits.
Do oak frame kits need planning permission?
The same rules apply as for any building. A separate single-storey garage or garden room usually doesn't need permission if it is under 2.5 metres high at the walls and under 4 metres at the top with a roof sloping both ways, isn't in front of the house, and is under 2.5 metres in total within 2 metres of a boundary. A garage with a room above always needs permission, and rules are tighter in the Surrey Hills, conservation areas and for listed houses.
