Southampton's Premier Garden Base Builders. Guaranteed 10 Years.
Hampshire's largest city deserves solid foundations. We provide engineering-standard bases for garden rooms, sheds, and hot tubs across Southampton (SO14-SO19), understanding the city's diverse properties and clay soils.
Expert Foundations for Southampton's Urban Gardens
Southampton sits on the Hampshire Basin with its Tertiary clays and sands, plus some flint gravels. These mixed ground conditions—with clay shrink-swell potential—require expert assessment. From Victorian terraces in Shirley to modern developments in Ocean Village, we understand the specific foundation requirements for city properties, compact access routes, and varied soil stability across different neighbourhoods.
A Flawless Foundation in 3 Simple Steps
Get in Touch
Send us your measurements or give us a call. We're experienced with Southampton's varied access requirements, from narrow Victorian side passages to modern gated developments.
Receive Your Quote
We provide a clear, fixed-price quote. We factor in the specific ground conditions for your area—whether you're in clay-heavy Bitterne or the sandier soils of Bassett.
Flawless Installation
Our expert team installs your base—often in just one day—leaving your city garden immaculate and ready for your new building.
The Right Base for Your Southampton Garden
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Poured Concrete
The ultimate rock-solid foundation. Perfect for heavy garden rooms or hot tubs. We understand Southampton's clay soils and ensure proper drainage and sub-base preparation for long-term stability.
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Raised Timber Frame
The smart solution for sloping ground. Many Southampton gardens—especially in Portswood and Swaythling—have gradients; this creates a level platform without massive excavation.
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Slabbed Base
Neat, durable, and permeable. The classic choice for greenhouses and sheds in urban Southampton gardens from Highfield to Woolston.
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Ground Screw Base
Quick, tree-friendly foundations. Ideal for gardens in the Common area or Bassett where protecting mature trees matters. No mess, no curing time.
Learn MoreSpecialist Foundations For Any Application
Need a Shed Base in Southampton?
Ground screws, concrete, timber frames - see all your options for Southampton gardens.
Expert Advice for Southampton Properties
"Hi, I'm Craig. I've been working in groundworks across Hampshire for over a decade, and my family has been in the trade since 1970. If you're unsure what base you need for your Southampton garden, or worried about clay movement, limited access, or city-specific challenges, just give me a call. I'll give you honest advice backed by over 50 years of Phillips family experience."
Why Choose JustBases in Southampton?
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City Garden Expertise
We understand urban gardens—compact spaces, limited access, and the need for efficient installation with minimal disruption.
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10-Year Guarantee
We offer a rock-solid written guarantee on both materials and labour, giving you complete peace of mind.
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Local Soil Knowledge
We know how to prep the sub-base correctly for Southampton's Tertiary clay and sand soils, preventing future settlement issues.
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Respectful & Tidy
We treat your property with respect. City gardens mean close neighbours—we work cleanly and considerately.
Trusted Across Hampshire For Decades
JustBases is the specialist base installation sister company of Sunset Developments. Our reputation is built on 50 years of family history serving communities across Dorset and Hampshire.
"The team are extremely hard working but most important to me is the quality of their workmanship. The cabin base was spot on in terms of dimensions and perfectly level. I would highly recommend."
— Verified Reviewer, SO53
"Craig and Luke are great. They turn up on time, do a quality job and leave the area clean and tidy."
— Verified Reviewer, SO18
Family Heritage
The Phillips family have 50 years of high-quality groundworks experience across Dorset & Hampshire.
Ready to Build on a Solid Foundation?
Get your free, no-obligation quote today.
Common Questions from Southampton Homeowners
JustBases Southampton.
Serving all of Southampton including: Shirley, Portswood, Bitterne, Woolston, Sholing, Swaythling, Bassett, Highfield, Lordshill, Millbrook, St Denys, Freemantle, and surrounding Hampshire areas.