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Glossary

Section 106 agreements on larger London developments

A legal agreement attaching obligations to a planning permission. Major schemes only.

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In short

A section 106 agreement is a planning obligation entered into under the Town and Country Planning Act 1990, binding on the land and its successors. It secures things a condition cannot — affordable housing, financial contributions, restrictions on occupancy — and is negotiated rather than calculated.

How does it differ from CIL?

CIL is a fixed formula per square metre, non-negotiable, and applies to floorspace. A section 106 obligation is negotiated, site-specific, and must meet three statutory tests: necessary to make the development acceptable, directly related to it, and fairly and reasonably related in scale and kind.

The two cannot be used to charge twice for the same infrastructure item.

When does a homeowner meet one?

Rarely for an extension. It arises where a new dwelling is created — a garden plot, a subdivision, an outbuilding conversion — and the borough seeks a car-free agreement removing the right to a residents' parking permit, a carbon offset payment, or occasionally an affordable housing contribution.

Car-free agreements are near-universal for new dwellings in inner London and are registered as a local land charge, so they bind future owners.

Can one be varied?

Yes. After five years, an application can be made to modify or discharge an obligation, with a right of appeal. Before that, variation is by agreement with the authority. A deed of variation is the usual instrument.

What does section 106 agreement mean for a London project?

Section 106 agreement in a Croydon context: London Borough of Croydon (Croydon Council) runs 24 conservation areas including the South Norwood Conservation Area and the Crystal Palace Conservation Area, and there is no borough-wide Article 4 direction, so permitted development generally survives outside conservation areas. That decides how section 106 agreement is handled: £548 and 8 weeks for a Croydon householder application, or £274 for the Lawful Development Certificate that records section 106 agreement as lawful. The law behind section 106 agreement sits in the Town and Country Planning Act 1990, the GPDO 2015 and the Building Regulations 2010.

Section 106 agreement at a glance

Key figures for Section 106 agreement
Legal basisSection 106, TCPA 1990
Binding onThe land and successors in title
Statutory testsNecessary, directly related, fairly and reasonably related
Common London obligationCar-free agreement for a new dwelling
VariationBy agreement, or by application after 5 years
Registered asLocal land charge

Common questions about section 106 agreement

Will my extension need a section 106?

Almost never. They attach to new dwellings and larger schemes.

Can I get out of a car-free agreement?

Only by variation with the authority, or by application after five years.

Is it the same as CIL?

No. CIL is a formula; a section 106 obligation is negotiated.

Section 106 in London — a London terraced street of the type we survey
A london terraced street of the type we survey — section 106 in London.
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An architectural technologist checking a printed set of house drawings, marking a proposed elevation in red — section 106 in London
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