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Commercial Lease Law

Privity of Contract in Commercial Leases — Landlord and Tenant (Covenants) Act 1995

Privity of contract: original tenant's personal liability under commercial lease covenants after assignment. Old leases (pre-1 January 1996): original tenant remains personally liable for full lease term under common law privity of contract doctrine; landlord can pursue any former tenant for rent/covenant breaches throughout the term; s.17 L&T(C)A 1995 notice: landlord must serve prescribed form notice on former tenant/guarantor within 6 months of fixed charge becoming due or right to recover is permanently barred; overriding lease (s.19): former tenant who pays under s.17 can call for overriding lease (mesne landlord) to forfeit the undertenant and mitigate. New leases (post-1995 Act): automatic release of outgoing tenant on lawful assignment; s.8 notice procedure; Authorised Guarantee Agreement (AGA): s.16 — outgoing tenant guarantees immediate assignee only; released when immediate assignee reassigns; Scotland: L&T(C)A 1995 does not apply; Scots law default: original tenant not liable for post-assignment rent.

10 min readUpdated 7 June 2026Last reviewed: 17 May 2026privity-of-contractlandlord-tenant-covenants-act-1995agaauthorised-guarantee-agreement

Old Leases — Pre-1996 Position

Common law privity of contract: original tenant remains personally liable under tenant's covenants (including rent) for full lease term — regardless of how many times the lease has been assigned. Former tenant liability: each former tenant who assigned with landlord's consent also remains liable. Guarantor exposure: corresponding full-term exposure. s.17 L&T(C)A 1995 (applies to old AND new leases): landlord must serve prescribed form notice on former tenant/guarantor within 6 months of fixed charge becoming due — failure bars recovery of that sum permanently. s.19 overriding lease: former tenant who pays under s.17 can call for overriding lease — steps in as mesne landlord; can forfeit undertenant; mitigates future exposure.

New Leases — The 1995 Act Regime

L&T(C)A 1995 applies to leases granted on or after 1 January 1996 ('new leases'). Automatic release: outgoing tenant automatically released from burden of tenant's covenants on lawful assignment (not unlawful assignment in breach of no-assignment covenant). s.8 notice: tenant serves notice on landlord before or within 4 weeks after assignment applying for release from landlord's covenants; if no counter-notice within 4 weeks, release automatic. Landlord release: landlord also automatically released from landlord's covenants on lawful transfer of freehold reversion; same s.8 notice procedure. Anti-avoidance: s.25 — agreements purporting to exclude tenant's right to release are void.

Authorised Guarantee Agreements (AGA)

AGA (s.16 L&T(C)A 1995): outgoing tenant guarantees performance of tenant's covenants by the immediate assignee — and only the immediate assignee. Permitted pre-condition: landlord can require AGA as condition of consent to assign new lease where lease contains no-assignment-without-consent covenant; requirement must be reasonable. Release of AGA guarantor: when immediate assignee reassigns the lease (with landlord's consent), the AGA guarantor is automatically released from liability for that subsequent assignee's obligations. Direct covenant: AGA may also include a direct covenant by outgoing tenant to observe/perform tenant's covenants during immediate assignee's occupation. Guarantor of AGA: landlord can require guarantor of the AGA — but same limitation (immediate assignee only; released on reassignment).

Section 17 Notices — Both Old and New Leases

s.17 L&T(C)A 1995 applies to both old and new leases. Prescribed form notice required: landlord must serve on former tenant/guarantor within 6 months of fixed charge (rent; service charge; other liquidated sum) becoming due. Six-month bar: failure to serve within 6 months = right to recover that charge permanently lost; no extension. Prescribed form: must use the form prescribed by the 1995 Act and regulations; failure to use prescribed form may invalidate notice. Practical importance: landlords must maintain records of all former tenants and their contact details for the full lease term; serve s.17 notices promptly on default.

Scotland and Practical Implications

Scotland: L&T(C)A 1995 does not apply; Scots law governs; default position — original tenant generally not liable for rent accruing after date of assignment (contrasting with pre-1995 English common law). Specific lease terms: express personal liability covenants in Scottish commercial leases may modify the Scots law default; take Scottish specialist legal advice. Pre-1996 English lease holders: any business that assigned an English commercial lease before 1 January 1996 retains potential exposure for the full remaining term — check with specialist commercial property solicitors. Due diligence: before accepting assignment of old lease, take advice on former tenant liability profile. Negotiating release: on assignment of old lease, parties may agree to release former tenants — requires formal documentation.

Frequently asked questions

What is privity of contract in a commercial lease?+

Privity of contract means the original tenant remains personally bound by the tenant's covenants (including rent) even after assigning. Under old leases (pre-1996), this continued for the full term regardless of subsequent assignments. The L&T(C)A 1995 abolished this for new leases (post-1 January 1996), providing automatic release on lawful assignment.

What is an Authorised Guarantee Agreement (AGA)?+

An AGA (s.16 L&T(C)A 1995) is a guarantee by the outgoing tenant of the performance of tenant's covenants by the immediate assignee only. The landlord can require an AGA as a condition of consent to assign. The AGA guarantor is released when the immediate assignee reassigns the lease.

What is a section 17 notice?+

A s.17 notice under L&T(C)A 1995 must be served on a former tenant or guarantor within 6 months of a fixed charge (rent etc.) becoming due, if the landlord wishes to recover that sum from them. Failure to serve within 6 months permanently bars the landlord from recovering that payment from the former tenant. Applies to both old and new leases.

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