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    6 min read

    Section 20 Timelines: How Long Does Consultation Actually Take?

    26 May 2026

    Key takeaway

    A full Section 20 consultation takes roughly three to four months before works start. Stage one, the notice of intention, runs for a 30 day observation period. Tendering and obtaining comparable estimates typically takes four to eight weeks. Stage two, the notice of estimates, adds another 30 day period, and there is then contractor mobilisation on top. Nominations from leaseholders extend the process further. The practical lesson is to start consulting as soon as a need is identified rather than when it becomes urgent, because compressing the timetable is what leads to dispensation applications.

    On paper a Section 20 consultation runs 60 days. In practice it almost always takes longer - and how much longer matters when you are trying to commission urgent works in a residential block.

    The statutory minimums

    • Notice of Intention - 30 days for leaseholder observations
    • Notice of Estimates - 30 days for leaseholder observations on estimates
    • Notice of Award - confirmation of contractor selection

    What that looks like in real time

    From decision to instruct, to contractor on site, a clean Section 20 typically runs 4 to 6 months. Drivers of delay include contractor availability for estimates, leaseholder observations that need a substantive response, and any specialist surveys needed before scopes can be finalised.

    Where consultations stall

    • Insufficient contractor estimates obtained (the Act requires the landlord to obtain estimates from any nominated contractors)
    • Observations from leaseholders that raise scope issues requiring re-design
    • Section 20 ZA dispensation applications in fire safety or emergency cases
    • Building Safety Act approvals running alongside Section 20 for higher-risk buildings

    Practical scheduling advice

    Plan major works at least 9 months out where possible. Communicate with leaseholders before serving notice - the Act sets a floor, not a substitute for engagement.

    Section 20 timeline tight for your block?

    If you are facing urgent works in an East London block, we can help structure the consultation and, where appropriate, prepare a dispensation application.

    Speak to our team about your block

    We manage residential blocks and estates across Romford and East London. If this article raised a question about your specific situation, send it across - we will give you a straightforward, plain-English answer.

    When to seek professional advice

    Most questions on this topic are management questions rather than legal ones, and the two are worth separating. A managing agent can tell you how something works day to day and what it will cost. A solicitor tells you what your rights are and how a Tribunal is likely to view them.

    Speak to a managing agent when

    • You need the consultation run properly - notices drafted, estimates obtained and observations logged.
    • You want the scope and specification tested before the works go out to tender.
    • You are budgeting for major works and need a reserve fund and payment plan that works for the block.
    Request a free block review

    Take specialist legal advice when

    • You need to apply to the Tribunal for dispensation.
    • A leaseholder is formally challenging the reasonableness of the costs.
    • The lease wording on recovery of the works is genuinely unclear or disputed.

    East Valley Properties provides management expertise, not legal advice. Where a matter turns on the wording of your lease or on formal proceedings, we will say so and work alongside your solicitor.

    Primary sources

    The official material behind this guide. We summarise it in plain English rather than reproducing it.

    Frequently Asked Questions

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