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 Chiswick?
In Chiswick, 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). Building costs in London run about 30% above the UK average, and the figures for Chiswick are adjusted to reflect that. 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:
- Planning conditions
- Building control route
- Council fees
- Type of application
Use the guide price tool to see how size and specification change the figure, then ask for a written, itemised quote.
Planning and building regulations in Chiswick
Whether you need planning permission depends on your house and its location in 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.
Where work involves a shared wall, building on the boundary, or digging foundations within 3 metres of a neighbour’s building and deeper than its foundations (or within 6 metres for deeper work), the Party Wall etc. Act 1996 applies and notices must be served before work starts.
We check this for your address before design work starts, so there are no surprises later.
What we handle
From survey to sign-off, the job normally involves:
- Build-over agreements with the water company
- Permitted development assessment
- Discharge of planning conditions
- Prior approval (larger home extension) in England
- Party wall notices
- Planning or householder applications
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 Chiswick
Space is at a premium in London, so homeowners often build out into the side return or up into the roof rather than move.
Projects in Chiswick (W4) are surveyed in person before we quote, so the price reflects your actual property.
How it works
- 01
Measured survey
We visit and measure the house so the drawings start from accurate information.
- 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
Approval
We follow the application through to a decision and pass on the approved drawings.
Questions about planning and building regulations applications in Chiswick
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.
How long does a planning decision take?
Councils aim to decide most householder applications within 8 weeks.
How much does a planning or building regulations application cost in Chiswick?
In Chiswick, 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.
What is the difference between planning permission and building regulations?
Planning permission controls what you build and how it looks and affects neighbours. Building regulations control how it is built: structure, fire safety, insulation and drainage.
Do you handle planning and building regulations applications in Chiswick?
Yes. We handle planning and building regulations applications across Chiswick, including postcodes W4. Every project starts with a free home visit.