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 Harrow?
In Harrow, 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). We start from a UK-wide guide and adjust it for London, where labour and materials are typically about 30% above average. 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
- Revisions requested by the council
- Building control route
- Party wall surveyor appointments
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 Harrow
Before anything is built in Harrow, we confirm which approvals apply 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.
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
On a typical planning or building regulations application we handle:
- Permitted development assessment
- Discharge of planning conditions
- Building control application and inspections
- Build-over agreements with the water company
- Planning or householder applications
- Prior approval (larger home extension) in England
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 Harrow
Many London boroughs have conservation areas and detailed design guides, so early design advice saves time at the planning stage.
From HA2 outwards, we take on projects throughout Harrow and the surrounding parts of Greater London.
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 Harrow
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.
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.
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.
How much does a planning or building regulations application cost in Harrow?
In Harrow, 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.
Do you handle planning and building regulations applications in Harrow?
Yes. We handle planning and building regulations applications across Harrow, including postcodes HA2. Every project starts with a free home visit.