What is a Section 106 Agreement
Understanding planning obligations is critical when developing or purchasing land. Under Section 106 of the Town and Country Planning Act 1990, local planning authorities can enter into legally binding agreements with landowners. These arrangements, commonly known as Section 106 agreements, secure developer planning contributions or developer obligations to make a proposed development acceptable in planning terms.
Typically, these agreements focus on mitigating the local impact of a development. Common requirements include the delivery of affordable housing, financial contributions to local infrastructure, highway works, or environmental measures.
Wider Planning Objectives and Boundaries
Local planning authorities hold considerable flexibility when drafting these contracts. An authority may impose planning obligations not only on the land directly subject to the planning application but also on adjoining or nearby land. This broader reach ensures that developments support wide-ranging public interests and proceed in a coordinated, sustainable manner.
The Binding Nature of s106 Agreements
A defining characteristic of a Section 106 agreement is that it runs with the land. This means the contract binds the physical property itself rather than the specific individual who signed it.
When the land is sold, transferred, or changes hands, the responsibilities automatically pass to the new owner. This feature ensures long-term continuity and enforceability. Furthermore, any lenders holding a mortgage over the land must also sign the s106 agreement to make it fully enforceable.
Landowner s106 Liability and Historic Breaches
As a general rule of law, the liability of the original landowner ends once they completely dispose of their interest in the property—provided the contract contains a suitable exclusion clause.
However, timing matters:
- Past Breaches: If a breach of contract occurred while the original landowner owned the property, they may remain legally liable for that historic breach even after selling the land.
- Future Compliance: If no breach took place during their ownership, the responsibility for future compliance passes entirely to the successor in title.
Retained Land and Phased Developments
Phased developments or fractional land sales introduce an important qualification to landowner s106 liability. If an original landowner retains any portion of the land subject to the Section 106 agreement, they may stay liable for the obligations linked to that specific retained parcel. To manage this risk, owners often seek to formally vary the agreement to remove their remaining land from ongoing developer planning contributions.
Essential Due Diligence for Purchasers
Because planning obligations are long-term and legally binding commitments, prospective buyers must undertake robust due diligence before acquiring affected land. A thorough review should include:
- Examining the full terms and clauses of the s106 agreement.
- Verifying whether any financial or practical obligations remain outstanding.
- Assessing the total cost and practical impact of long-term compliance.
- Determining if any formal variations or legal releases are necessary before completing the transaction.
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- Immediate Financial Strains: Unpaid local authority fees, delayed infrastructure levies, or sudden demands for cash contributions can drain emergency capital reserves before construction even begins.
- Operational Gridlock: Local councils hold the power to freeze development progress entirely. If prior obligations—like constructing a specific access road or delivering public green space—are neglected, authorities can legally block the sale of completed units or withhold final building sign-offs.
- Diminished Profit Margins: Discovering late in the process that a high percentage of the site must be allocated to subsidized affordable housing can severely depress the gross development value (GDV) of the entire asset.
