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Tell Craig about the swim spa, approximate size and postcode. You do not need a finished specification to start.

Specialist foundation installation
A swim spa is larger and heavier than a standard hot tub, so its slab must follow the exact model specification and finished access plan.
50+ years
Family groundwork experience
Full 10-year
Written JustBases guarantee
Call Craig directly
Friendly practical advice
One clear price
Written foundation scope
Start with what you want to build
Once filled, a swim spa applies a substantial, sustained load over a long footprint. An apparently solid patio or domestic shed slab should not be assumed adequate.
The exact model, water capacity and manufacturer base specification are needed before work is priced.
Explore the details →The slab must support the cabinet as the spa manufacturer intends, without local high points or unsupported areas.
Explore the details →Panels, pumps and isolation equipment must remain reachable after landscaping is finished.
Explore the details →Rain, splash and drain-down water need a route that does not undermine or pond around the base.
Explore the details →Three easy steps
Getting started is simple. We will guide you through the choices and explain any information needed before installation.
Tell Craig about the swim spa, approximate size and postcode. You do not need a finished specification to start.
We discuss the site and suitable foundations, identify any supplier information needed and provide a clear written quotation.
Our team marks out and installs the agreed foundation, with the required checks before the next stage of your project.
Choose the foundation, not the complication
These are the methods worth assessing for this application. The structure, support plan and actual ground determine the right choice—not a one-size-fits-all specification.

Concrete
A reinforced concrete slab is commonly specified for swim spas. Thickness, reinforcement, sub-base and flatness follow the selected model and site design.
Worth considering for: Full-size swim spas and exercise pools with high filled weights
Ask about this option →Clear prices, agreed scope
Specialist foundations need a quotation matched to the structure, ground and installation scope. A generic garden-building price would not reliably represent this project. Call Craig with your idea and postcode to get started.
No VAT is added to the guide prices shown.
Get your exact written priceView the full base price guideIts loads, footprint and accepted support arrangement.
Ground conditions, levels, buried services and practical access.
Specified materials, installation and any agreed testing or supporting frame.
Clear inclusions, responsibilities and timing before work is booked.
Easy to start, free to ask
You do not need drawings or a finished specification before getting in touch. Send what you have and Craig will explain the useful next step.
Helpful details, if available
Talk to Craig
Craig will listen to what you are planning and help establish the foundation information that matters.
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
Swim Spa Foundations installation
Planned around its use

We install the specified reinforced concrete foundation and coordinate its level with access steps, service clearances, drainage and any surrounding terrace.
Discuss your project with Craig →The exact model, water capacity and manufacturer base specification are needed before work is priced.
The slab must support the cabinet as the spa manufacturer intends, without local high points or unsupported areas.
Panels, pumps and isolation equipment must remain reachable after landscaping is finished.
Rain, splash and drain-down water need a route that does not undermine or pond around the base.
Before installation
Choose the swim spa model before final foundation installation. Cabinet dimensions, access-panel positions and base instructions vary and cannot safely be inferred from a generic length and width.
Electrical supply, lifting access, drainage and any recessed installation should be designed by the relevant specialists alongside the base.
JustBases quotes the agreed foundation and groundwork. Product installation, specialist connections, commissioning and third-party design remain outside our scope unless the written quotation expressly includes them.
Genuine customer feedback
Our full written guarantee covers installation workmanship and the foundation materials we supply, subject to your quotation. Read what customers say about our foundation work below, with the original job types and sources shown.
"I couldn't recommend Craig highly enough! Communication prior to the job was outstanding even considering our ever changing goal posts. Craig and his team turned up exactly at the agreed time, were well presented, friendly and professional. The cleanliness, attention to detail and quality of the job was outstanding."
— Verified Customer
Checkatrade · BH16 · 2020-05-27
Work listed by the source: Log cabin foundation
"Good standard of workmanship. Friendly and efficient. Prompt response for estimate and fitted into our timescale. Will be using the firm in future and thoroughly recommend them."
— Verified Customer
Checkatrade · SP6 · 2019-09-16
Work listed by the source: Concrete base for new summerhouse
"Craig and his team were very professional throughout the job. They worked tirelessly and extremely hard. The job involved digging up a thick reinforced concrete base. Then creating a whole new base with precision engineering in preparation to accept a new building on top. The result was an excellent job all round."
— Verified Customer
Checkatrade · BH24 · 2021-11-30
Work listed by the source: Building foundations and landscaping
Our service area
For this application we cover Dorset, Hampshire, South Wiltshire. Tell Craig the postcode and we will confirm the suitable installation options and travel requirements.
Straight answers before you decide
Still unsure? Send Craig a short enquiry and we will help with the next step.
An outline of the project and your postcode are enough to start.