Garden-building foundations across BH20
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
A practical local starting point
A garden office inside Wareham, a cabin towards Sandford or a larger room on a rural BH20 plot will not necessarily need the same base. JustBases compares poured concrete, ground screws and raised timber frames, then recommends the straightforward option that fits the building, levels and access.
Our installation team currently begins each working day from Wareham, while JustBases remains based in Ringwood. You can start with the building type, approximate footprint and postcode; Craig will ask for anything else that is genuinely useful.
What are you planning?
Three easy steps
You do not need to arrive with a foundation specification. We help you turn the building information into a clear installation price.
Call, WhatsApp or use the form with the building type, approximate dimensions and a BH20 postcode.
We discuss the garden and building, visit when seeing the site would help, and send a written quotation.
The team prepares and installs the agreed base to the footprint and level needed for the building to follow.
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 durable full-area slab for substantial rooms whose floor system is designed around a traditional concrete base.
From £695 for 8' × 6' 48 ft² / 4.46 m²
A focused-support system that can reduce excavation and spoil on compatible framed garden buildings.
Installed screws from £1,180 for 8' × 6'; frame quoted separately 48 ft² / 4.46 m²
A treated timber platform for suitable buildings where a garden fall or uneven surface makes a raised solution useful.
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
Share the type of garden building, its approximate size and the Wareham or BH20 postcode. Craig can help you decide whether concrete, screws or a raised frame is the better fit.
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 Wareham
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
"Excellent service and good quality work cleared up well after completion."
— Verified Customer
Checkatrade · BH20 · 2017-11-07
Work listed by the source: Concrete base for large garden room
"Work carried out efficiently, both chaps courteous and friendly. Cleared area afterwards, very tidy, would use again."
— Verified Customer
Checkatrade · BH20 · 2017-09-12
Work listed by the source: Concrete base for garden studio
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.
An insulated room needs a square, level foundation coordinated with its floor, door thresholds and finished external level.
Suitable base options
Concrete
A dependable starting point for heavier rooms designed to bear across a complete rigid slab.
Ground screws with a frame
Useful for compatible framed rooms where quicker follow-on work or less excavation is valuable.
Raised timber frame
Suitable for selected timber rooms where a level platform must bridge modest changes in the garden.
On low-lying Wareham plots, the intended finished height and ventilation beneath a framed building are useful points to agree early.
Ask about this base →
Larger timber cabins need the support arrangement to follow the wall lines, floor bearers and total footprint supplied by the manufacturer.
Suitable base options
Poured concrete
Appropriate where the cabin supplier requests a continuous level slab beneath the whole floor.
Ground screws and support grid
Can suit a cabin with defined bearing lines and a compatible timber or steel frame above the screws.
Raised timber platform
A practical choice for suitable lighter cabins on gardens with a manageable fall.
A model name or supplier plan is helpful when available, but approximate dimensions are enough to start the Wareham quotation conversation.
Ask about this base →
A gym, music room or simulator can need extra attention to floor stiffness, equipment loads and planned services.
Suitable base options
Concrete slab
Often the clearest option for concentrated gym loads and rooms needing a firm full-area floor.
Engineered screw-supported frame
Possible when the frame design accommodates the room, equipment and required floor performance.
Raised timber base
Can work for suitable specialist rooms when loads and spans are known before construction.
Tell us about heavy equipment or a service route at the start and the Wareham quotation can include the relevant foundation detail.
Ask about this base →
Pods and compact cabins often arrive with specific support points, making coordination with the supplier especially useful.
Suitable base options
Ground screws and frame
Frequently practical where the pod has clear bearer positions and excavation is best kept localised.
Concrete foundation
Suitable for pod designs that require a full slab or integrate services through a concrete floor.
Raised timber platform
May suit lighter units with an approved support layout and appropriate ground clearance.
Sleeping or letting use can alter the planning position, but you can still discuss foundation choices with Craig while that use is being confirmed.
Ask about this base →Local ground context
British Geological Survey mapping describes Poole Formation sands and clays across the wider Wareham Basin, with river, terrace and harbour-related deposits adding further variation. That means a garden near the town centre should not be assumed to behave like a higher plot outside it.
Previous landscaping, drainage and made ground also influence the surface a garden room actually sits on. JustBases considers the real footprint and building rather than assigning a foundation from the BH20 postcode alone.
There is no need to arrange a soil report before making contact. We begin with the building and garden, then explain if a project-specific check is genuinely warranted.
Access handled with you
Access around Wareham ranges from older properties with limited parking and narrow side routes to village and rural plots reached along longer drives. These are normal planning details for our team, not hurdles a customer must resolve alone.
A quick photograph can show whether concrete materials, timber or screw-driving equipment will take the simplest route. Craig can visit when the view on site will make the quotation clearer.
Helpful if you have them—not required before you call:
Useful local guidance
Dorset Council is the local planning authority for Wareham. Whether a garden room benefits from permitted development depends on the complete building, including its use, size, height and position—not whether the foundation is concrete, timber or steel.
The made Wareham Neighbourhood Plan reflects the historic Saxon town, conservation, archaeology, landscape and Poole Harbour setting. Those matters are property-specific. They do not stop you asking for a base quotation while the building details are checked.
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
Still choosing the building? These Dorset businesses provide useful places to compare rooms, cabins and timber structures. Ask for the external base size and any floor-support requirements when available.
Made-to-order timber garden buildings supplied in Dorset.
Bespoke timber rooms, workshops and garden structures.
Poole-based garden rooms and timber buildings serving the south coast.
These are independent research links, not endorsements or partner relationships. Confirm current delivery area, specification and base requirements with the supplier.
Service area
Our Wareham service includes Sandford, Stoborough, Ridge, Wool, Bere Regis and surrounding rural addresses. A postcode is enough for us to confirm the practical service area.
Straight answers
A building type, approximate size and postcode are enough to start.