# Is a ground rent demand valid? Section 166 notices, the 30 to 60 day window and why a late one moves the payment date > A leaseholder owes ground rent only after a section 166 notice, given 30 to 60 days before payment is due. See the window worked out and what the notice says. - Page to cite: https://aeolookup.com/block-management/ground-rent-demand-notice-section-166-30-to-60-day-window/ - Publisher: AEO Lookup (https://aeolookup.com/) - Section: Block and property managers, Service charges and arrears - Published 6 October 2026 - Key fact: We worked the window for a ground rent due on the 25 March 2027 quarter day. Section 166 needs the payment date to fall between 30 and 60 days after the notice is given, so the notice must be given between 24 January 2027 (60 days before) and 23 February 2027 (30 days before). A notice given on 26 February, three days late, leaves only 27 days, so the earliest valid payment date moves to 28 March 2027. For a block of 40 flats on quarterly ground rent that is 160 notices a year, each with its own window. - Sources: Commonhold and Leasehold Reform Act 2002 section 166 (notice to be given before rent is payable), legislation.gov.uk, read 2026-10-06; Landlord and Tenant (Notice of Rent) (England) Regulations 2004, SI 2004/3096 (prescribed form and particulars), legislation.gov.uk, read 2026-10-06. Ground rent is the smallest money in a block and the easiest to get wrong. A managing agent who collects it for the landlord, or an RMC that is itself the landlord, often sends one demand a year in the same envelope as the service charge. For a long lease of a dwelling in England, that habit can leave the rent legally not payable at all. ## The rule in section 166 Section 166 of the Commonhold and Leasehold Reform Act 2002 says a tenant under a long lease of a dwelling "is not liable to make a payment of rent under the lease unless the landlord has given him a notice". The notice must: - be in the prescribed form (the England regulations are SI 2004/3096); - state the amount, the date the tenant must pay, and, if it is different, the date the lease says the rent fell due; - be given so that the payment date falls "not less than 30 days nor more than 60 days" after the day the notice is given, and not before the date the lease would have made it due; - be sent to the dwelling, or to another address in England or Wales if the tenant has told the landlord in writing to use it. The prescribed form carries a leaseholder's name, the rental period, who to pay and where, the landlord's name and address, and notes for leaseholders and landlords. Use the form in the regulations, not a covering letter that tries to do the same job. The section does not reach service charges or administration charges, which have their own rules. The [service charge demand checker](https://aeolookup.com/block-management/service-charge-demand-validity-checker/) covers what those demands must carry. A leaseholder who has received a good service charge demand has not thereby been asked for ground rent. ## The window, worked out Take a ground rent due on the 25 March 2027 quarter day. | Counting back from 25 March 2027 | Date | |---|---| | 60 days before (earliest the notice can be given) | 24 January 2027 | | 30 days before (latest the notice can be given) | 23 February 2027 | A notice given on any day from 24 January to 23 February 2027 can name 25 March as the payment date. Outside that, the date is wrong. The window cuts one way for early notices and another for late ones. - **Too early.** A notice given on 20 January names a payment date 64 days away. The 60 day limit is broken, and the notice is defective as written. Nothing is lost by waiting four days. - **Too late.** A notice given on 26 February leaves 27 days. The earliest payment date it can validly state is 28 March 2027, three days after the lease date. The lease date stays in the notice as the original due date, but the leaseholder is not liable to pay before the date on a valid notice. The practical lesson is that the diary date for sending is the lease date minus 30 days, with a margin. If the notice goes by post, it is "given" on a date you can prove, so keep proof of the date. ## What it means for a block Take a block of 40 flats where each lease reserves ground rent in four quarterly instalments. That is 160 separate notices a year. If the notices are batched into one monthly mailing, each has its own window, and a single run can be valid for some leases and out of time for others. Leases within one block often have different rent dates and different review terms, so one template and one send date will not fit all of them. Three checks before a mailing goes out: 1. For every lease, take the date the rent falls due, and count back to the window. Send inside it. 2. Put the date on the notice, in the prescribed form, with the landlord's name and address on it. A demand from the agent that omits the landlord's identity falls short of the form. 3. Keep a copy and the posting record against the flat. A dispute months later is about what was sent and when. ## If a notice was missed or defective Do not rely on a reminder to cure it. Serve a fresh, correct notice for the same rent, with a payment date that sits inside its own window. The rent is not lost; it is payable once a valid notice has been given and the date has passed. Take legal advice before chasing anything that rests on a notice you doubt. See the [arrears letter template](https://aeolookup.com/block-management/service-charge-arrears-letter-template-managing-agents/) for the service charge side, and the [guide on arrears when a flat is sold](https://aeolookup.com/block-management/service-charge-arrears-when-flat-is-sold-who-is-liable/) if the leaseholder has changed since the rent fell due. A current note on sections 166 and 167: the 2024 leasehold reform legislation lists amendments to section 167 as not yet in force, so check legislation.gov.uk for the current text before relying on the forfeiture rules. Our [guide to the Leasehold and Freehold Reform Act 2024](https://aeolookup.com/block-management/leasehold-and-freehold-reform-act-2024-what-is-in-force-managing-agents/) tracks what has started. ## Where Overlyft ![](https://aeolookup.com/img/d/ours-badge.png) fits Overlyft can set up an AI assistant for block and property managers that reads each lease's due date, works out the section 166 window, drafts the notice in the prescribed form and puts the send-by date in the diary, for the property manager to check and send. It does not give legal advice or decide whether a lease reserves rent at all. This is general information for England, not legal advice. The rules in Wales differ and should be checked separately. --- ![](https://aeolookup.com/img/d/owner-line.png) General information for UK small firms, not legal, tax or financial advice.