Glossary
Lawful Development Certificates for London projects
A formal confirmation from the council that a proposal qualifies as Permitted Development. Useful for selling and for certainty before building.
A formal confirmation from the council that a proposal qualifies as Permitted Development. Useful for selling and for certainty before building.
An LDC is a formal decision that a proposed or existing use or operation is lawful. For proposed works the fee is £274 — half the householder rate — and the determination period is eight weeks. It is not permission; it is proof that permission was never needed.
A certificate of lawfulness for proposed use or development confirms that work you intend to carry out is permitted development. A certificate of lawfulness for existing use or development confirms that something already built or in use has become immune from enforcement through the passage of time.
The evidential burden differs sharply. For a proposed certificate the drawings prove the case. For an existing certificate the applicant must prove, on the balance of probabilities, the date the breach began — usually through dated photographs, invoices, utility bills and sworn statements.
Three reasons. A conveyancing solicitor will ask for it on sale, and its absence can stall a transaction or force indemnity insurance. It removes the risk of a council later disagreeing about a volume calculation or an eaves height. And it converts a judgement call into a binding decision the authority cannot revisit.
For a loft conversion where the volume sits close to the 40 or 50 m³ limit, the £274 is the cheapest insurance in the project.
Existing and proposed plans, elevations and sections at a stated scale, a location plan at 1:1250, a site plan at 1:500, and a written statement setting out precisely which class of the GPDO is relied on and how each condition and limitation is satisfied. There is no design assessment — the decision is a matter of fact and law.
Lawful development certificate (LDC) in a Hackney context: London Borough of Hackney (Hackney Council) runs 29 conservation areas including the De Beauvoir Town Conservation Area and the Stoke Newington Conservation Area, and an Article 4 direction is in force there, so permitted development cannot be assumed. That decides how lawful development certificate (ldc) is handled: £548 and 8 weeks for a Hackney householder application, or £274 for the Lawful Development Certificate that records lawful development certificate (ldc) as lawful. The law behind lawful development certificate (ldc) sits in the Town and Country Planning Act 1990, the GPDO 2015 and the Building Regulations 2010.
| Fee, proposed | £274 |
|---|---|
| Fee, existing | £548 (same as householder) |
| Determination period | 8 weeks |
| Test | Fact and law, not planning merit |
| Location plan | 1:1250 |
| Site plan | 1:500 |
No. It certifies that permission is not required.
No. Design and amenity are irrelevant to the decision.
A proposed certificate is valid for the same three-year implementation period as a permission.
Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.
