Foundations for substantial BH21 garden buildings
Ground screws, concrete and raised timber-frame bases for garden rooms, offices, cabins and substantial garden buildings—with clear prices and a full 10-year guarantee.
Illustrative garden-room example
Choose the building first
A garden office close to Wimborne Minster, a cabin in Colehill and a larger studio towards Corfe Mullen can each put different demands on the foundation. JustBases installs three proven systems and explains which one makes practical and financial sense for the actual building.
You can contact Craig while the room is still being chosen. An approximate footprint and BH21 postcode are enough for the opening conversation; supplier details and site photographs can follow if they become useful.
What are you planning?
Three easy steps
The customer journey stays brief even when the foundation advice is carefully considered.
Tell Craig whether it is an office, studio, cabin or specialist room and give its approximate size.
We discuss access and levels, visit where worthwhile and issue a clear written quotation.
The team sets out the exact footprint and installs the agreed base to the required level.
Choose the foundation, not the complication
You do not need to choose one now. We compare the building, garden and access, then explain the simplest suitable option.
A full-area, rigid platform for substantial rooms that are specified for a concrete slab.
From £695 for 8' × 6' 48 ft² / 4.46 m²
Steel point supports for compatible timber or galvanised-steel frames, with less full-footprint excavation.
Installed screws from £1,180 for 8' × 6'; frame quoted separately 48 ft² / 4.46 m²
A treated structural base for appropriate garden buildings on uneven or gently falling plots.
From £840 for 8' × 6' 48 ft² / 4.46 m²
Useful guide prices
These are current guide prices for standard installations. The written quotation confirms access, levels, preparation, ground conditions, support layout and any optional DPM or service conduit.
Get your exact written price| Base size | Concrete | Raised timber | Installed ground screws |
|---|---|---|---|
| 10' x 8' 3m x 2.4m 80 ft² / 7.43 m² | £965 | £1,195 | £1,280 |
| 12' x 8' 3.6m x 2.4m 96 ft² / 8.92 m² | £1,075 | £1,375 | £1,340 |
| 12' x 10' 3.6m x 3m 120 ft² / 11.15 m² | £1,195 | £1,585 | £1,400 |
| 14' x 10' 4.2m x 3m 140 ft² / 13.01 m² | £1,295 | £1,820 | £1,460 |
| 16' x 10' 4.8m x 3m 160 ft² / 14.86 m² | £1,445 | £1,995 | £1,500 |
| 20' x 10' 6m x 3m 200 ft² / 18.58 m² | £1,695 | £2,415 | £1,600 |
Ground-screw prices are for the installed screws only. A suitable timber or galvanised-steel support frame can be added to the written quotation. Raised-timber prices use suitable concrete or composite posts. Your quotation confirms exactly what is included.
Easy to start, free to ask
Send the intended building type, approximate footprint and a Wimborne or BH21 postcode. Craig will explain the suitable foundation routes and provide a written price.
Talk to Craig about your garden room base
Not sure which base you need? Craig will listen to what you are planning and explain the easiest next step.
Online quote requests are normally answered within 24 hours, excluding weekends.
Just give us your contact details and a short description of what you want to build. We will guide you through the rest.
Your enquiry
Garden room base installation in Wimborne
Clear reassurance
The JustBases guarantee covers our installation workmanship and the foundation materials we supply, subject to the written quotation. It is separate from the garden-building supplier's warranty.
Realistic timing
Ground screws are normally installed in one day. Concrete bases are normally installed within two working days, with the next-stage timing confirmed for the project.
Frames available
We can supply a treated timber or galvanised-steel support frame where it forms part of the agreed ground-screw solution.
Genuine feedback on related building-base work
"Craig and his team have been fantastic. Had the team over twice now to help with our garden project and both times I've been super impressed with the work. The team are extremely hard working but most important to me is the quality of their workmanship. The fencing looks amazing and the cabin was spot on in terms of dimensions and perfectly level. I would highly recommend."
— Verified Customer
Checkatrade · SO53 · 2024-01-28
Work listed by the source: Garden fencing and cabin base
"Efficient and good standard of work. Very pleasant and professional guys. Would recommend and use again."
— Verified Customer
Checkatrade · BH21 · 2019-04-15
Work listed by the source: Concrete base for garden room
"Excellent, kept me fully informed when held up by weather, great job and a pleasure to have around."
— Verified Customer
Checkatrade · BH21 · 2018-03-06
Work listed by the source: Concrete base for workshop + gravel path
Match the base to the space
The building name is only the starting point. We also consider its footprint, support arrangement, intended use and the garden it needs to fit.
A well-used room needs a base that keeps the floor level and coordinates cleanly with thresholds, insulation and cladding.
Suitable base options
Concrete
Provides continuous support for rooms designed around a traditional slab and full-area floor.
Ground screws and frame
Suited to compatible framed buildings where less excavation or quicker follow-on work is useful.
Raised timber
Can level selected timber rooms across modest changes in a Wimborne garden.
Near the Stour and Allen, finished height and known winter water are worth mentioning; elsewhere, garden fall or mature planting may guide the choice instead.
Ask about this base →
Larger timber buildings work best when the foundation is coordinated with their perimeter rails, internal bearers and assembly tolerances.
Suitable base options
Concrete slab
The natural choice where the cabin company specifies a level continuous foundation.
Screw-supported frame
Can follow clear bearer lines while keeping excavation concentrated at the screw positions.
Raised timber platform
Useful for compatible cabins where creating a level platform above a gentle slope is efficient.
If the model has already been selected, send its base diagram. If not, Craig can give early guidance from the approximate width and length.
Ask about this base →
Heavy equipment, acoustic treatment or a simulator floor can make load and stiffness more important than the label on the building.
Suitable base options
Poured concrete
Often the most direct foundation for heavy equipment and a firm, full-area finished floor.
Designed screw frame
Possible where the building and support grid are sized for the room's expected use.
Raised timber structure
Can suit lighter specialist rooms once point loads and joist spans are understood.
A simple list of planned heavy items helps us price the right base; you are not expected to produce engineering calculations before calling.
Ask about this base →
Pods often have a defined chassis or bearer grid, so the foundation must support those positions rather than merely match the outer dimensions.
Suitable base options
Ground screws and frame
Well suited to many pods with defined supports and a preference for limited excavation.
Concrete base
Useful when the pod supplier requires a full slab or services are coordinated through it.
Raised timber platform
An option for selected lighter pods with a compatible floor and support plan.
Planning and building requirements may change when a pod is used for sleeping or letting, but the base can be discussed while that is checked.
Ask about this base →Local ground context
British Geological Survey mapping for the Bournemouth district records London Clay and related sand units around Wimborne, while river alluvium and terrace deposits follow the Stour and Allen. Corfe Mullen, Colehill and central riverside plots should not be treated as a single ground type.
At garden level, old walls, filled ground, drainage and mature trees can matter too. We use the mapped context to ask sensible questions, not to diagnose a property from its postcode.
Start with the project. If further information is genuinely needed, it will be explained after that first discussion rather than made a condition of enquiry.
Access handled with you
Wimborne includes older properties with narrow side passages and walls, established suburban gardens and larger plots around Colehill and Corfe Mullen. The simplest foundation may be influenced by the route as much as by the footprint.
Tell us about anything obvious, or send a photograph if easy. Craig can visit where parking, levels or the material route cannot be judged reliably from the first conversation.
Helpful if you have them—not required before you call:
Useful local guidance
Dorset Council is the planning authority for Wimborne. Some domestic garden buildings can fall within permitted development, but the use, height, location, footprint and status of the property decide whether those rights apply.
Wimborne Minster has a conservation area and individual addresses may have protected trees or other constraints. Those checks relate to the exact building and property; the foundation quotation can progress alongside them.
Planning information is a practical starting point, not legal or planning advice. Confirm the position for the exact property and building with the relevant authority.
Choosing the building
These businesses have a local base or display presence and may help while you select the room. Request the precise outside footprint and foundation requirements for the chosen model.
Wimborne family business supplying made-to-order buildings and garden rooms.
Wimborne-based bespoke insulated garden-room company.
Garden room, summerhouse and log-cabin display village at Three Legged Cross.
These are independent research links rather than recommendations or partnerships. Confirm delivery area, specification and base requirements with the supplier.
Service area
Our local coverage includes Wimborne Minster, Colehill, Corfe Mullen, Merley, Canford Bottom and nearby villages.
Straight answers
A building type, approximate size and postcode are enough to start.