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What is a Section 106 Agreement?

A Section 106 agreement, often called s106 agreements or a planning obligation, is a legal contract between a developer, landowner and the local planning authority under the Town and Country Planning Act 1990. Its purpose is to make a development acceptable in planning terms by securing contributions or obligations that mitigates impact of the development.

Typical obligations include:

  • Affordable Housing and viability – ensuring new developments provide homes for all income levels.
  • Infrastructure Improvements – funding roads, schools, healthcare facilities.
  • Environmental Enhancements – protecting green spaces, provision of open space and biodiversity net gain.
  • Financial Contributions – supporting community facilities and services.

Why Are Section 106 Agreements Important?

Section 106 agreements help balance development with community needs. They ensure growth is sustainable and that local services can accommodate new residents. Without these agreements, planning permission may be refused, and failure to comply can lead to enforcement action or costly delays.

Our Expertise in Section 106 Agreements

At Lester Aldridge, we provide clear, practical advice tailored to your project. Our services include:

  • Drafting and Negotiating Agreements – ensuring terms are fair and legally sound.
  • Advising on Planning Obligations – helping you understand your responsibilities.
  • Reviewing Existing Agreements – identifying risks and opportunities for variation.
  • Resolving Disputes – supporting developers and landowners in complex negotiations.

We work closely with planning consultants, local authorities, and other stakeholders to deliver timely, cost-effective solutions.

Meet Our Specialist

Sabah Siddiq, a highly experienced planning solicitor in London and Southampton, advises on complex Section 106 agreements for developers, landowners, and commercial projects. Her expertise ensures agreements are negotiated efficiently and in compliance with planning law.

Why Choose Lester Aldridge?

  • Specialist Expertise: Decades of experience in planning law and complex agreements.
  • Tailored Advice: Solutions designed for your project’s unique requirements.
  • Proven Track Record: Trusted by developers, housing associations, and landowners nationwide.

Get in Touch

If you need advice on Section 106 agreements, please contact Sabah Siddiq on:
023 8082 7505 or sabah.siddiq@LA-law.com

Frequently Asked Questions

It’s a legal contract between a developer, landowner and the local planning authority, ensuring developments are acceptable in planning terms by securing contributions or obligations that mitigates impact of the development.

Timescales vary, but early engagement with legal experts can prevent delays.

Yes, variations are possible if circumstances change. We can advise on the process.


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