What is a planning or building regulations application?

Planning permission decides whether a project can be built; building regulations decide how it must be built. Most extensions, lofts and conversions need building regulations approval even when planning permission is not required.
How much does a planning or building regulations application cost in Bath?
In Bath, a planning or building regulations application typically costs £750–£2,500 for application management (council fees extra), including VAT at 20% (standard rate; planning application fees carry no VAT, council building control fees include VAT). Prices in the South West sit near the national average for this kind of work, and the range for Bath reflects that. Council application fees are extra.
| Size or type | Guide range |
|---|---|
| Application management (council fees extra) | £750–£2,500 |
| Larger or more complex projects | £2,500–£3,000 |
The biggest cost drivers are:
- Building control route
- Council fees
- Party wall surveyor appointments
- Revisions requested by the council
Your exact price depends on the survey and drawings. The guide price tool gives a quick range in the meantime.
Planning and building regulations in Bath
Approvals for a planning or building regulations application in Bath follow the rules for England. In England householder applications, lawful development certificates and prior approvals for larger home extensions go to the local planning authority. Building control can be the council or a registered building control approver.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
At the survey we check your house’s planning history and any restrictions, and tell you which route applies.
What we handle
On a typical planning or building regulations application we handle:
- Permitted development assessment
- Party wall notices
- Planning or householder applications
- Lawful development certificate applications
- Prior approval (larger home extension) in England
- Build-over agreements with the water company
How long does it take?
Allow about 8 weeks for a householder planning decision (two months in Scotland). If the drawings are for a planning application, add the council’s decision period once they are submitted.
Building in Bath
The South West mixes stone and render cottages with post-war and newer estates, and local materials matter more here when matching an extension.
From BA1 outwards, we take on projects throughout Bath and the surrounding parts of Somerset.
How it works
- 01
Measured survey
We visit and measure the house so the drawings start from accurate information.
- 02
Concept design
Options for layout and appearance, revised until you are happy.
- 03
Application drawings
Plans, elevations and supporting documents prepared for the council.
- 04
Approval
We follow the application through to a decision and pass on the approved drawings.
Questions about planning and building regulations applications in Bath
How much does a planning or building regulations application cost in Bath?
In Bath, a planning or building regulations application typically costs £750–£2,500 for application management (council fees extra), including VAT at 20% (standard rate; planning application fees carry no VAT, council building control fees include VAT). Your fixed price depends on the survey and drawings.
What is a lawful development certificate?
A certificate from the council confirming that a project is permitted development. It is optional but useful when selling the house.
Do you handle planning and building regulations applications in Bath?
Yes. We handle planning and building regulations applications across Bath, including postcodes BA1. Every project starts with a free home visit.
Do I need a party wall agreement?
In England and Wales, if your work affects a shared wall, boundary or nearby foundations, notices must be served. Neighbours can consent or appoint surveyors.
What happens if I build without approval?
The council can take enforcement action, and missing approvals cause problems when selling. It is always better to get approvals first.
