020 7864 7245 [email protected] WhatsApp
Building-Regs FAQ

Do I need building regulations even if I have planning?

Yes. Planning and building regs are separate. PD removes the planning requirement only — building regs always apply to structural and habitable space changes.

Victorian terraced street in London — building regulations in London
Short answer

Yes. Planning permission and building regulations are separate regimes with separate bodies, separate applications and separate fees. Planning governs what you may build; building control governs how it must be built. Almost all structural, drainage, energy and fire-related work is notifiable regardless of whether planning was needed.

Where does the confusion come from?

Both are administered by the council, often in the same building, and both involve drawings. But the planning officer never checks a beam size and the building control surveyor never comments on whether an extension is too deep for the neighbour. A permitted development extension needing no planning application still needs full building control.

Which route: full plans or building notice?

A full plans application submits the drawings and calculations for checking before work starts, and must be decided within five weeks, extendable to two months by agreement. You get a written approval to build to and to sell against.

A building notice gives 48 hours' notice with no plan check and the work is judged on site. It is faster to start and looks cheaper, but it carries the whole risk of a wrong detail being found after it is built.

What is inspected?

Excavation, foundation concrete, damp-proof course and oversite, drains laid and drains tested, floor and roof structure, insulation, and completion. Covering up work before inspection is the usual cause of opening up later.

What do you end up with?

A completion certificate from the council, or a final certificate from a registered building control approver. Without it a conveyancing solicitor will raise the absence on sale, and a buyer's lender may require indemnity insurance or a regularisation application.

What does this mean for a London project?

A worked Waltham Forest example of do i need building regulations even if i have planning?: with 17 conservation areas — the Walthamstow Village Conservation Area and the Lloyd Park Conservation Area among the best known — London Borough of Waltham Forest (Waltham Forest Council) sees do i need building regulations even if i have planning? constantly, and an Article 4 direction is in force there, so permitted development cannot be assumed. Where do i need building regulations even if i have planning? pushes a Waltham Forest scheme out of permitted development, the route becomes a £548 application decided in 8 weeks rather than a £249 prior approval in 6 weeks. is governed by the Town and Country Planning Act 1990, the GPDO 2015 and the Building Regulations 2010.

Key figures

Key figures for Do I need building regulations even if I have planning?
Planning and building controlSeparate regimes
Full plans decision5 weeks, extendable to 2 months
Building notice48 hours
Typical London charge£500–£1,200
OutputCompletion or final certificate
Retrospective routeRegularisation application

Related questions

Does permitted development avoid building regulations?

No. The two are entirely independent.

Can I use a private approver?

Yes — a registered building control approver has the same legal standing as the council.

What if work was done years ago without approval?

A regularisation application is the route, though it usually means opening up.

A building regulations drawing pack open on a desk — a construction section sheet and its specification schedule — do i need building regulations even if i have planning in London
The building regulations pack: construction sections and the specification building control signs the work off against.
Book a call

Speak to a chartered technologist — free 15 minutes

Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.

Do I need building regulations even if I have planning? in London — a London terraced street of the type we survey
A london terraced street of the type we survey — do i need building regulations even if i have planning? in London.

Found this useful? Share it

Copies the headline and the link, ready to paste anywhere — helpful if you are planning an extension with a neighbour, builder or architect.

Free quote in 60 seconds
Call us Free quote →

Before you go…

Get a free, no-obligation quote for your project. MCIAT chartered.

council-ready drawing review · All 33 London boroughs