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 Welwyn Garden City?
In Welwyn Garden City, a planning or building regulations application typically costs £750–£2,750 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 across the East of England are typically 6% above the UK average for this kind of work, which is reflected in the range for Welwyn Garden City. Council application fees are extra.
| Size or type | Guide range |
|---|---|
| Application management (council fees extra) | £750–£2,750 |
| Larger or more complex projects | £2,750–£3,500 |
Your quote will depend mainly on:
- Council fees
- Party wall surveyor appointments
- Type of application
- Planning conditions
A guide range is only a starting point: the guide price tool gives an instant figure for your size, and a free survey turns it into a fixed quote.
Planning and building regulations in Welwyn Garden City
Approvals for a planning or building regulations application in Welwyn Garden City 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
Handled as part of most planning and building regulations applications:
- Discharge of planning conditions
- Permitted development assessment
- Party wall notices
- Building control application and inspections
- Planning or householder applications
- 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 Welwyn Garden City
Many towns in the East of England have estates built since the 1970s, where garage conversions and rear extensions are popular.
If your home is in Welwyn Garden City or close by in Hatfield, Hertford and St Albans, a free home visit is the first step.
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
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 Welwyn Garden City
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 Welwyn Garden City?
Yes. We handle planning and building regulations applications across Welwyn Garden City, including postcodes AL8. Every project starts with a free home visit.
How much does a planning or building regulations application cost in Welwyn Garden City?
In Welwyn Garden City, a planning or building regulations application typically costs £750–£2,750 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 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 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.
