Do you need a supply-only kit or an erected building?
Choose a supply-only steel building kit if you have the site equipment and construction team to assemble the frame; choose a fully erected building if you want Buildings UK Ltd to manage the on-site erection. Both options use bespoke, British-made steelwork, so the decision depends on your available labour, equipment and preferred level of project responsibility.
A supply-only steel building kit gives you the designed and fabricated components to arrange construction yourself, while an erected building includes the on-site assembly of the steel frame by Buildings UK Ltd. The right option depends on who will coordinate the work, what site equipment is available and how much responsibility you want to retain during construction.
What a supply-only kit involves
With a supply-only package, the building is manufactured to the agreed specification and supplied as a kit for assembly by your own construction team or an independent contractor. This approach can suit agricultural, industrial and equestrian projects where you already have suitable labour, lifting equipment and experience with structural steelwork.
Before choosing this route, establish who will:
- prepare and check the site before delivery;
- provide cranes, telehandlers, access equipment and other lifting machinery;
- unload, store and protect the steelwork;
- interpret the fabrication drawings and organise the erection sequence;
- install the frame, connections, bracing and any specified secondary steelwork;
- coordinate cladding, doors, concrete work, services and other trades; and
- inspect the completed structure and deal with any work that does not match the agreed design.
A kit is not simply a collection of standard parts. Buildings UK Ltd provides bespoke British-made, CE marked hot rolled steelwork designed for the requirements of the individual building. The supplied documentation can include planning elevation drawings and isometric fabrication blueprints, helping the appointed construction team understand the building layout and assembly details.
What a fully erected building involves
A fully erected option transfers the on-site steel frame assembly to Buildings UK Ltd’s erection service. This can reduce the amount of construction coordination required from the building owner, particularly where the owner does not have access to lifting equipment or a team familiar with steel frame installation.
The precise scope should be confirmed before the order is placed. Ask whether the quotation covers only erection of the steel frame or also includes items such as cladding, doors, concrete foundations, drainage, electrics and internal fit-out. These elements may involve separate design decisions, site preparation and specialist trades, even when the principal steelwork is being erected as part of the package.
The site still needs to be suitable for the erection team. Access routes, ground conditions, working space, overhead obstructions, foundation positions and arrangements for receiving materials should be checked in advance. The building owner remains responsible for providing accurate site information and identifying restrictions that could affect delivery or assembly.
Comparing responsibility and risk
The main difference is not the quality or design of the steelwork; it is the allocation of work and responsibility. A supply-only kit leaves the owner or appointed contractor responsible for organising construction. An erected building gives Buildings UK Ltd a direct role in assembling the frame on site, but the boundaries between erection, groundwork, cladding and later fit-out must still be documented clearly.
Supply-only may be appropriate when you have an established contractor, in-house construction capability or equipment already available for another project. Erection may be more suitable when coordinating multiple suppliers would create additional administration or when specialist frame assembly is not part of your normal work. Neither option removes the need to confirm planning, foundation and building-control requirements where applicable.
What to confirm before selecting an option
- Request a clear schedule of what is included in the kit or erection package.
- Confirm the design loads, dimensions, openings, roof and wall requirements before fabrication.
- Identify who is responsible for foundations, groundworks, cladding, doors and services.
- Check the proposed delivery and unloading arrangements against the access available at the site.
- Confirm what drawings and installation information will be provided to the person assembling the building.
- Agree how changes, site restrictions and additional work will be handled before construction begins.
In practical terms, choose supply-only when you are equipped to manage the construction process, and choose full erection when you want the steel frame assembly included within Buildings UK Ltd’s service. Comparing the scope, responsibilities and site requirements in writing will give you a more meaningful basis for pricing than comparing the kit price alone.
The fairest comparison is between the total construction cost of each option, not the price of the steel package alone. A supply-only quotation may need to be assessed alongside the cost of arranging competent erection labour, lifting plant, unloading, site supervision and coordination with other contractors. For an erected building, check which of these activities are included in the erection price and which remain separate responsibilities.
Set out both options against the same building specification, including the frame dimensions, openings, foundations, cladding and access arrangements. This makes it easier to identify whether a lower initial figure reflects a genuine cost difference or simply excludes work that someone else will need to organise.