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 Lewisham?
In Lewisham, a planning or building regulations application typically costs £1,000–£3,250 for application management (council fees extra), including VAT at 20% (standard rate; planning application fees carry no VAT, council building control fees include VAT). The guide for Lewisham reflects typical costs in London, roughly 30% above the UK-wide figure. Council application fees are extra.
| Size or type | Guide range |
|---|---|
| Application management (council fees extra) | £1,000–£3,250 |
| Larger or more complex projects | £3,250–£4,000 |
The biggest cost drivers are:
- Type of application
- Revisions requested by the council
- Building control route
- Party wall surveyor appointments
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 Lewisham
Approvals for a planning or building regulations application in Lewisham 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.
Our first visit includes a check of your planning history, so you know the route before paying for drawings.
What we handle
Handled as part of most planning and building regulations applications:
- Build-over agreements with the water company
- Planning or householder applications
- Building control application and inspections
- Discharge of planning conditions
- Permitted development assessment
- Party wall notices
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 Lewisham
Space is at a premium in London, so homeowners often build out into the side return or up into the roof rather than move.
Our Lewisham coverage includes postcode districts SE13 and SE22, and we also work in nearby places such as Forest Hill, Catford and Peckham.
How it works
- 01
Survey and brief
We visit, talk through what you want and record the existing building.
- 02
Design options
Sketch layouts to agree the approach before detailed drawing starts.
- 03
Application drawings
Plans, elevations and supporting documents prepared for the council.
- 04
Submission and follow-up
We submit the application and deal with questions from the council or building control.
Questions about planning and building regulations applications in Lewisham
Do you handle planning and building regulations applications in Lewisham?
Yes. We handle planning and building regulations applications across Lewisham, including postcodes SE13 and SE22. Every project starts with a free home visit.
How long does a planning decision take?
Councils aim to decide most householder applications within 8 weeks.
Who carries out building control?
Either the council’s building control service or, in England and Wales, a private building control body registered to do the work. In Scotland and Northern Ireland building control is provided by the council.
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.
How much does a planning or building regulations application cost in Lewisham?
In Lewisham, a planning or building regulations application typically costs £1,000–£3,250 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.
