Is an LDC guaranteed?

It should be granted if the evidence clearly shows compliance. The quality of drawings and evidence matters.

Can an LDC cover existing work?

Yes, but you must prove the development is lawful.

Lawful Development Certificate (LDC): when it’s worth it

Scope: England Last reviewed: 2026-02-06

The quick answer

An LDC is a formal council decision confirming your proposed or existing works are lawful. It’s not always required, but it can protect you during resale, remortgage, or disputes by giving written proof.

Quick checks

Is it a house (not a flat/maisonette)?
Are you in a conservation area or under Article 4?
Are you measuring from the original house?
Do you need prior approval for deeper rear extensions?
Would an LDC reduce resale risk?

Common fail points

Wrong baseline measurements
Height mistakes near boundaries
Ignoring constraints (Article 4, conservation)
Confusing planning route with building regulations

Next steps

If you want a clear yes/no for your exact property, book a consultation.
If you want proof for resale, consider an LDC pack.

Primary sources

Want a clear decision for your house?

Book a consultation. We’ll tell you what’s likely to pass, what evidence you need, and the safest route.

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