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Sizing and Specification

What Your Site Needs Before a Building Can Go Up

A temporary building is only as good as the ground it stands on. Whether an existing yard will do, whether you need pads or a slab, and who is responsible for the groundworks are the questions that most often move a programme, so it pays to settle them early.

Published 2026-09-18  ·  4 min read

Which surfaces a temporary building can stand on

Some temporary building systems can be installed onto suitable existing concrete, asphalt or other firm hardstanding, subject to level, condition, anchoring requirements and structural review. Other sites or applications require local pads, foundations or a new slab. The correct base solution is confirmed after reviewing the ground conditions, building loads and intended use.

Tarmac, concrete or hardcore

Potentially, yes, but suitability cannot be confirmed from the surface description alone. We need to consider the condition and depth of the existing construction, level changes, drainage, anchoring method, structural loads and what will happen inside the building. A technical site survey is the best way to confirm whether the existing surface can be retained or needs improvement.

Foundations and floors

Not always. Lightweight systems may be capable of being anchored to suitable existing hardstanding, while larger, more highly loaded, occupied or permanent buildings may require engineered foundations or a concrete slab. Foundations are therefore project-specific rather than determined only by whether a building is described as temporary.

Is a floor included?

Not automatically. In many industrial applications the existing concrete slab or suitable hardstanding becomes the working floor. Other projects require a new concrete slab, raised floor or another engineered solution. The quotation states whether a floor or slab is included and what base condition is required before installation.

Who is responsible for groundworks

This depends on the agreed project scope. Noah can identify the required base or foundation solution and, where agreed, can coordinate the associated groundworks through the project. In other cases the client may provide the slab or foundations to an agreed design before the building installation starts. Responsibility is made clear in the quotation and pre-installation information.

Uneven ground, and what a survey tells you

We assess levels and visible ground conditions during the site survey and identify whether local adjustment, levelling, pads, foundations or a new slab may be required. Where ground conditions create structural uncertainty, further investigation or engineering information may be needed before the final base design can be confirmed.

What the free site survey does and does not confirm

Our initial site survey reviews visible conditions, access, available space, levels and operational constraints. It is not a structural, geotechnical, drainage, contamination or underground-services investigation. Where ground suitability is uncertain, additional surveys, service scans or engineering information may be required before the foundation or anchoring solution can be confirmed.

Sending plans, drawings and photographs

Yes, and we encourage it. A site plan, general arrangement drawing, planning drawing, aerial image or clear photographs can help us understand the site before the survey. If you already have racking layouts, equipment drawings or required door positions, send those too so the building can be considered around the operation from the outset.

What you need to have ready

The customer must provide safe and suitable access, a prepared installation area, accurate information about underground and overhead services, the required permissions, suitable welfare and utilities, and sufficient clear working space for delivery vehicles and installation equipment. Project-specific requirements are confirmed following the site review and before delivery.

Drainage and severe weather

The customer is responsible for maintaining the surrounding ground, gutters, downpipes and drainage so water is directed away from the building. The building must be operated within its stated wind and snow design criteria. Doors and openings must be secured during adverse weather, and any damage, movement or unusual roof loading must be reported immediately.

This is general information rather than advice on your site. The 28-day rule is narrower than it looks, the alternatives are workable but limited, and planning is the item that most often delays these projects. We work with a planning consultant who specialises in temporary and relocatable buildings and can introduce you early. In the meantime, see the range of temporary industrial buildings, or compare temporary building hire against temporary buildings for sale while the planning route is being established.
The brochure

Download the Noah brochure

Explore the building systems we supply, the main specification choices and what to expect from installation.

  • Plan the space. A practical guide to span, length and eave height before you brief the project.
  • Compare specifications. Insulation, cladding, doors and access, with the purpose of each option explained.
  • Share it with your team. A single PDF for colleagues in operations, finance and procurement.
  • Prepare the site. The key points on groundworks, access and the scope of a quotation.

We send the brochure by email, and nothing else unless you ask.

White steel-framed temporary building with a PVC roof, standing in open countryside
Pricing

Request a quote

Send us the approximate dimensions, postcode, intended use and likely duration. We can prepare an initial figure without a site visit.

  • Hire and purchase compared. Both options are priced against the same brief, so you can compare them properly.
  • Built around your specification. The figure reflects the size, insulation, access and intended use of your building.
  • An indicative programme. We include the likely project sequence alongside the initial cost.
  • No obligation. Use the quotation to review the project internally and come back when you are ready.

Next you will add the project details. Pricing is confirmed against the site and the agreed specification, and any survey date is arranged with you.

Good to know

Frequently asked questions

Do temporary buildings need foundations?

Not always. Lightweight systems may be capable of being anchored to suitable existing hardstanding, while larger, more highly loaded, occupied or permanent buildings may require engineered foundations or a concrete slab. Foundations are therefore project-specific rather than determined only by whether a building is described as temporary.

Is a floor included with the building?

Not automatically. In many industrial applications the existing concrete slab or suitable hardstanding becomes the working floor. Other projects require a new concrete slab, raised floor or another engineered solution. The quotation states whether a floor or slab is included and what base condition is required before installation.

Does the free technical site survey confirm that the ground is suitable?

Our initial site survey reviews visible conditions, access, available space, levels and operational constraints. It is not a structural, geotechnical, drainage, contamination or underground-services investigation. Where ground suitability is uncertain, additional surveys, service scans or engineering information may be required before the foundation or anchoring solution can be confirmed.

What must the customer provide before installation?

The customer must provide safe and suitable access, a prepared installation area, accurate information about underground and overhead services, the required permissions, suitable welfare and utilities, and sufficient clear working space for delivery vehicles and installation equipment. Project-specific requirements are confirmed following the site review and before delivery.

See all frequently asked questions