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Building-Regs FAQ

LABC vs Approved Inspector — which?

LABC is council-based, slightly cheaper, sometimes slower. Approved Inspector is private, faster, marginally more rigorous. Both have same legal status.

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

Both apply the same Building Regulations and both issue a certificate with the same legal standing. A registered building control approver often gives faster plan checks and a named inspector; the local authority is sometimes cheaper and holds enforcement powers directly. For most domestic work the choice is practical, not technical.

What changed under the Building Safety Act?

Private approved inspectors are now called registered building control approvers and must be registered with the Building Safety Regulator. They cannot take on higher-risk buildings — at least 18 m tall or seven storeys with two or more residential units — which go to the Regulator under the gateway regime. Domestic extensions and lofts are unaffected.

How does a private approver take the work on?

By serving an initial notice on the local authority, which has five working days to reject it. Once accepted, the approver is the building control body and the council's powers are suspended for that project.

If the approver resigns — usually because a project has stalled or diverged from the approved design — the initial notice is cancelled and the work reverts to the council, which then has to be satisfied about work it never saw. That is the main practical risk of the private route.

Which is better for a London extension?

If your contractor already works regularly with a particular approver, that continuity is worth a lot: the inspector knows their detailing and inspections get booked easily. If not, the council is a reasonable default and its charge is published rather than quoted.

Does either affect planning?

No. Building control has no say on planning, and a planning approval says nothing about building regulations compliance.

What does this mean for a London project?

LABC or approved inspector — which should you use? in a Havering context: London Borough of Havering (Havering Council) runs 15 conservation areas including the Romford Market Conservation Area and the Upminster Conservation Area, and there is no borough-wide Article 4 direction, so permitted development generally survives outside conservation areas. That decides how labc or approved inspector — which should you use? is handled: £548 and 8 weeks for a Havering householder application, or £274 for the Lawful Development Certificate that records labc or approved inspector — which should you use? as lawful. The law behind labc or approved inspector — which should you use? sits in the Town and Country Planning Act 1990, the GPDO 2015 and the Building Regulations 2010.

Key figures

Key figures for LABC or approved inspector — which should you use?
Private body's legal nameRegistered building control approver
Register held byBuilding Safety Regulator
Initial notice rejection window5 working days
Cannot handleHigher-risk buildings
CertificateFinal certificate — same standing as council completion
Typical domestic charge£500–£1,200

Related questions

Is a private final certificate acceptable to lenders?

Yes. It has the same legal standing as a council completion certificate.

Can I switch mid-project?

Yes, but the new body must be satisfied about covered-up work, which usually means opening up.

Who is cheaper?

It varies by borough and by project; the council scale is published, approvers quote.

LABC vs Approved Inspector — which? in London — a London terraced street of the type we survey
A london terraced street of the type we survey — labc vs approved inspector — which? in London.
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A building regulations drawing pack open on a desk — a construction section sheet and its specification schedule — labc vs approved inspector — which in London
The building regulations pack: construction sections and the specification building control signs the work off against.

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