13 Feb Planning Permission and Building Regulations for Steel Structures in the UK
Planning Permission Versus Building Regulations
Steel structures’ versatility, durability, and cost-effectiveness make them ideal for everything from agricultural buildings and industrial warehouses to residential extensions and garden offices.
However, before starting any steel construction project, you need to understand the regulations that govern these buildings. Navigating planning permission and building regulations can be a headache, but with the right knowledge, you can ensure your project proceeds smoothly and legally.
The Big Distinction
Many property owners mistakenly believe that planning permission and building regulations are interchangeable terms, but they have entirely different purposes. Planning permission is concerned with whether you should be allowed to build something in a particular location.
Local planning authorities assess factors such as the visual impact on the surrounding area, the effect on neighbouring properties, highway safety, and whether the proposed structure aligns with local development plans.
Building regulations, on the other hand, focus on how you build. They’re technical standards that ensure any construction work meets requirements for structural stability, fire safety, energy efficiency, ventilation, drainage, and accessibility. Most steel structure projects will need to meet both sets of requirements, though there are important exceptions.
Understanding Permitted Development Rights
Not every steel structure requires planning permission, thanks to permitted development rights. These rights allow certain types of building work to proceed without formal planning approval, subject to specific limitations and conditions. For instance, agricultural buildings on farms may qualify for permitted development if they’re reasonably necessary for agriculture and meet size restrictions.
Similarly, some garden buildings, garages, and outbuildings can be erected under permitted development rights, provided they don’t exceed certain height thresholds, don’t take up more than half the garden area, and aren’t positioned forward of the principal elevation facing a road.
However, permitted development rights come with caveats. They don’t apply in conservation areas, Areas of Outstanding Natural Beauty, National Parks, or on listed buildings, where much stricter controls exist. Additionally, even if planning permission isn’t required, you’ll almost certainly still need to comply with building regulations. It’s always advisable to check with your local planning authority before assuming your project qualifies for permitted development, as the rules can be complex and vary depending on your specific circumstances.
Building Regulations for Steel Construction
Regardless of whether planning permission is needed, building regulations approval is mandatory for most permanent steel structures. The regulations are divided into various parts, each addressing different aspects of construction. Part A governs structural safety and is particularly relevant for steel buildings, requiring detailed structural calculations prepared by a qualified engineer to demonstrate that the frame can safely support all anticipated loads, including wind and snow loads.
Part B addresses fire safety, which is crucial for steel structures since steel loses strength rapidly at high temperatures. Your building may require fire protection measures such as intumescent coatings or fire-resistant boarding. Part L covers energy efficiency and insulation, ensuring your steel structure meets thermal performance standards, whilst other parts address matters like ventilation, drainage, electrical safety, and access for disabled people where applicable.
Building control approval can be obtained either through your local authority’s building
control department or via an approved inspector. You’ll typically need to submit detailed plans and specifications before work commences, and inspections will be carried out at key stages of construction to verify compliance.
The Application Journey
If planning permission is required, the process begins with preparing detailed drawings and supporting documents that demonstrate how your steel structure complies with local planning policies. Applications are submitted to the local planning authority along with the appropriate fee, with standard applications typically taking eight weeks to determine, though this can extend to thirteen weeks for major developments.
During this period, your application may be subject to public consultation, allowing
neighbours to comment. Planning officers will assess the proposal against various criteria and may request additional information or modifications. If you get approval, permission usually lasts three years, within which you must commence construction.
For building regulations, you’ll need to provide technical drawings, structural calculations, and specifications demonstrating compliance. Building control will inspect the work at various stages, from foundations through to completion, issuing a completion certificate once they are satisfied that all regulations have been met.
Seeking Professional Guidance
Given the technical and legal complexities involved, most steel structure projects benefit from professional input. Structural engineers are essential for ensuring your building is properly designed and meets structural regulations, whilst architects or architectural technologists can help navigate planning requirements and create compliant designs.
Some structural steel fabricators, like Baker Steel Trading, also offer design services and can assist with regulatory processes. Investing in professional advice early can prevent costly mistakes and delays, ensuring your steel structure project achieves both regulatory approval and your practical objectives.
Structural Steel Fabricators Near You
If you’re looking for high-quality, CE-marked steel fabrication that will help any domestic or commercial project in the construction industry maximise its potential, Baker Steel Trading can help.
To learn more, contact a member of our team today.