The short answer
If you need scaffolding for longer than the quoted period, the scaffold simply stays up and you pay an extra-week charge for the additional time. The included hire period (often around 6 to 8 weeks) covers a typical job; beyond it the firm charges a weekly rate until the scaffold is dismantled. There is no penalty as such, it is continued hire, but the cost accrues week by week, so an overrun adds up. The scaffold must remain safe and inspected throughout under the Work at Height Regulations 2005, and where it stands on a public pavement, the local authority licence must be renewed if it lapses. Telling the scaffold company as soon as you know a job will overrun helps them plan and confirm the extension rate.
Projects often run longer than expected, and scaffolding hire is built to accommodate that, for a price. The sections below explain what actually happens at an overrun, how charges are calculated, and how to keep the extra cost under control.
At a glance
- At overrunScaffold stays; you pay weekly
- No penaltyIt is continued hire
- CostAccrues each extra week
- ComplianceStay safe, inspected, licensed
- Best moveTell the firm early
What actually happens at an overrun
An overrun is a normal and expected part of scaffolding hire, not a contractual breach. When the included period ends and work is still going, the scaffold remains in place and the hire continues on an extended basis. The table outlines the typical sequence.
| Stage | What happens | Cost effect |
|---|---|---|
| Within included period | Scaffold up, work proceeds | Covered by the quote |
| Period ends, work done | Firm dismantles and removes | Covered by the quote |
| Period ends, work ongoing | Hire continues, scaffold stays | Per-week charge begins |
| Long overrun | Extended hire over months | Ongoing weekly charge, plus licence renewal |
Indicative sequence only. Extension rates and included periods vary by firm and quote.
How extra-week charges work
Beyond the included window, scaffolding is normally charged at a weekly hire rate for the additional time. This is separate from the original erect-and-dismantle cost, which you have already paid for; the extra charge is purely for the scaffold continuing to occupy your wall and tie up the firm's materials. Because it accrues each week, a short overrun of a week or two is usually modest, while a long delay can add a meaningful sum, so it is worth understanding the rate before you find yourself in that position.
The extension rate should ideally be set out in the original quote or terms, alongside the included period, so you can see what an overrun would cost. If it is not stated, ask before booking. Where the scaffold stands on a public pavement or road, the local authority licence is issued for a set period and a longer hire may require the licence to be renewed, which is a separate cost and administrative step. Keeping both the scaffold firm and, where relevant, the council aware of an extended timeline avoids compliance problems on top of the hire cost.
How to avoid or limit an overrun
The most effective way to control overrun costs is to schedule the work tightly so the scaffold is erected shortly before the job starts and dismantled soon after it finishes, leaving little idle standing time within the included period. Coordinating trades, so a roofer, renderer or painter using the same scaffold work in sequence rather than with long gaps, keeps the structure productive and reduces the chance of running past the window.
When booking, ask the scaffolder for a realistic included period that matches the likely length of your specific job rather than a generic figure, and clarify the extra-week rate up front. Building a small buffer into the schedule for weather or trade delays, common on roofing and rendering, reduces the risk of a costly surprise. If a delay does become unavoidable, telling the firm promptly lets them plan and may make for a more workable extended rate. Overruns are rarely dramatic if you understand the rate and keep the scaffold company in the loop; the cost only becomes a problem when an overrun is long and unmanaged.
Common reasons jobs overrun, and who is responsible
Most overruns trace back to a handful of predictable causes, and recognising them early helps you plan a buffer rather than be caught out. Weather is the biggest on external work: rendering, roofing and painting all stall in wet, frosty or very hot conditions, and a poor spell can push a job past its window through no fault of any trade. Sequencing is another: where several trades share the scaffold, one running late can hold up the next, so the whole job slips. And discovering extra work once access is in place is common, a roofer finding rotten battens, or a renderer uncovering damaged substrate that must be repaired before they can continue.
A frequent question is who bears the extra hire cost when the overrun is caused by a trade rather than the scaffold. The honest answer is that it depends on the contracts involved. The scaffold company charges for the time the scaffold is in place regardless of why it overran; whether you can recover that from a contractor whose delay caused it is a matter between you and that contractor, and depends on what was agreed. The practical lesson is to keep the parties talking: if a roofer expects to need an extra two weeks, that should be flagged to you and the scaffolder together, so the extension is arranged deliberately and everyone understands the cost. Overruns handled openly are simply a known weekly charge; the ones that cause friction are those nobody saw coming or took ownership of.
Keeping the cost of an overrun under control
When a job is going to need the scaffold for longer than the quote allowed, the cost of that overrun is largely within your control if you act early. The first move is to contact the scaffold company as soon as it becomes clear the work will not finish in time, rather than waiting for the included period to lapse. Agreeing the extension in advance lets you confirm the weekly rate, understand exactly when extra charges start, and plan the additional cost into the project. A firm told early can usually accommodate the extension smoothly; one told late may have committed its materials elsewhere, which can complicate matters.
It is also worth being honest with yourself about why the job is overrunning and whether the scaffold genuinely needs to stay up for the whole of the delay. If the hold-up is a long wait on materials or a decision, and no work can happen in the meantime, it can occasionally be more economical to take the scaffold down and re-erect it when work resumes, though the erect and dismantle charges mean that only pays off over a longer gap. Throughout any extension, the scaffold must remain safe and inspected, and any pavement licence must stay valid, so an overrun is not simply a cost question but a compliance one too. Handling it openly and early, rather than letting the scaffold drift past its period unmanaged, is the way to keep both the bill and the safety of the structure in hand.
Frequently asked questions
Will I be charged a penalty for keeping scaffolding too long?
Not a penalty as such. Beyond the included period the scaffold company charges continued hire at a weekly rate. It is an extension of the same service rather than a fine, but the cost accrues each week so a long overrun adds up.
How much does an extra week of scaffolding cost?
It varies by firm and by the size of the scaffold, and is set at a weekly hire rate separate from the original erect-and-dismantle cost. Ask for the extra-week rate when you book so you can budget for any overrun.
What if my pavement scaffold licence expires during an overrun?
The local authority licence covers a set period, so a longer hire may need it renewed before it lapses. An expired licence on a pavement scaffold can lead to enforcement action, so the renewal must be arranged in good time, usually by the scaffold company.
Sources & further reading
Figures on this page are typical UK ranges drawn from published sources and depend on your specific job. They are guidance, not a quotation.