Planning permission versus building regulations: what does a homeowner need?
Planning and building regulations are separate systems. Planning deals broadly with whether and how a development is allowed in its setting; building regulations set technical requirements for building work. A project in England may need one, both or neither application, depending on the work and applicable exemptions. Check each route before committing to a builder.
What planning considers
Planning permission, where required, addresses the proposed development and its effects, such as scale, appearance and neighbours. Some home alterations may be permitted development subject to conditions or other restrictions. A conservation area, listed building, flat or previous planning condition can change the answer. The Planning Portal’s common projects guidance is a starting point; confirm the position for the actual property with the planning authority or a qualified adviser.
What building regulations consider
Building control focuses on compliance with technical requirements, including structure, fire safety, insulation, ventilation, drainage and access where relevant. Many extensions require approval even when planning permission is not needed. The Planning Portal explains the distinction. The type of application, drawings, inspections and certificates depend on the work and route used.
Approval is not a tender package
A planning drawing may establish the shape of a project while leaving steel sizes, insulation build-ups, electrical layout and finishes unresolved. Building control approval also does not tell a builder exactly which products you want or create a complete priceable scope. You still need coordinated construction information and a specification. Read can a builder price from planning drawings? and what the specification should include.
Other checks may run alongside
Party wall notices, covenants, leasehold consent, structural design, utility approvals or specialist permits can matter independently. The party wall guide explains one common programme risk. Make a permissions and information register: required decision, responsible person, status, evidence and deadline. Do not schedule irreversible work against an unresolved approval.
What to ask before signing
Which planning and building control route applies to this property?
Who prepares, submits and pays for each application?
What drawings and technical design are still needed?
Which inspections and certificates are required during and after construction?
How are changes to an approved design handled?
Build Advocate can review the available project information and identify commercial or delivery gaps; statutory and design decisions remain with the appropriate authority and professionals. See our comprehensive £999 package.
