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Tell Craig about the site office, approximate size and postcode. You do not need a finished specification to start.
Specialist foundation installation
Site Office & Modular Office Foundations
A site office foundation needs defined support points, safe access and service routes ready before the module arrives.
50+ years
Family groundwork experience
Full 10-year
Written JustBases guarantee
Call Craig directly
Friendly practical advice
One clear price
Written foundation scope
Still comparing the options? What Is the Best Foundation for a Site Office? A Practical Modular Guide
Start with what you want to build
The right foundation for your site office
Portable and modular offices are delivered to a chassis or structural floor with particular bearing points. A broadly level patch of ground is not the same as a correctly set foundation.
Module support plan
Chassis rails, corner positions and maximum support spacing govern the foundation layout.
Explore the details →Delivery tolerances
Levels and diagonals should be checked before crane or HIAB placement.
Explore the details →Safe access
Steps, ramps and thresholds need an agreed external level from the outset.
Explore the details →Service coordination
Power, water, waste and data routes should emerge where the module design expects them.
Explore the details →Three easy steps
From first call to a finished foundation
Getting started is simple. We will guide you through the choices and explain any information needed before installation.
Talk through the options
We discuss the site and suitable foundations, identify any supplier information needed and provide a clear written quotation.
Install and hand over
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
Foundation options for your site office
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.
Installed ground screws
Ground screws and support frame
Commercial ground screws and a suitable support arrangement can provide promptly loadable points for approved modular designs.
Worth considering for: Time-sensitive sites, uneven ground and relocatable modular buildings
Ask about this option →
Concrete
Concrete foundation
Individual pads, strips or a slab can be constructed to the module supplier's bearing and anchoring detail.
Worth considering for: Long-term offices, high traffic and sites needing a hard surrounding surface
Ask about this option →Clear prices, agreed scope
A price for your project
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 guideThe structure
Its loads, footprint and accepted support arrangement.
The site
Ground conditions, levels, buried services and practical access.
The foundation package
Specified materials, installation and any agreed testing or supporting frame.
The written quotation
Clear inclusions, responsibilities and timing before work is booked.
Easy to start, free to ask
Tell us about your site office
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
- Module GA and support drawing
- Bearing reactions if supplied
- Delivery and crane plan
- Finished floor level
- Service entry positions
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.
Request your free quote
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
Site Office Foundations installation
Planned around its use
What matters for your site office
We install pads, slabs or ground-screw supports to an approved module layout and coordinate finished levels with steps, ramps, drainage and incoming services.
Discuss your project with Craig →Module support plan
Chassis rails, corner positions and maximum support spacing govern the foundation layout.
Delivery tolerances
Levels and diagonals should be checked before crane or HIAB placement.
Safe access
Steps, ramps and thresholds need an agreed external level from the outset.
Service coordination
Power, water, waste and data routes should emerge where the module design expects them.
When the design and ground are suitable
Why consider ground screws?
Year-round flexibility
A screw-only foundation avoids pouring and curing concrete, reducing one source of weather-related delays. Unsafe access, flooding, frozen or unsuitable ground can still mean postponing installation.
Less digging and mess
Localised supports can reduce excavation and spoil compared with extensive concrete foundations. Clearance, pre-drilling, service trenches and machinery access may still disturb the site.
A lower-impact approach
Using less concrete and moving less spoil can reduce material use and transport. Retaining vegetation may benefit habitats, but trees and wildlife still need protection. Steel manufacture and the full project design matter to any carbon comparison.
Before installation
Dimensions, approvals and responsibilities
The modular supplier or structural designer should provide the bearing locations and reactions. JustBases installs the approved base rather than inventing a generic pad pattern.
Temporary status does not automatically remove planning, building-control, access or welfare obligations. The project team remains responsible for the complete installation.
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
A full 10-year JustBases guarantee
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
Foundation installation across the South
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
Site Office Foundations FAQs
Yes, with suitable notice and approved drawings. The programme depends on the chosen system, site access and any concrete curing requirement.
Still unsure? Send Craig a short enquiry and we will help with the next step.
Related applications
Temporary Classroom Foundations
Accurate foundations for single and linked classroom modules, planned around access and services.
Explore this application →Shipping Container Foundations
Level pads, slabs and ground-screw supports for single, linked and converted containers.
Explore this application →Industrial Unit Foundations
Engineer-led groundworks for small steel, framed and modular industrial buildings.
Explore this application →Tell us what you want to build
An outline of the project and your postcode are enough to start.