Crown reduction is the most commonly requested and most commonly misunderstood job in tree surgery. It is also the point where quotes start to diverge sharply between contractors, which is usually a sign they are quoting for different work rather than the same work at different prices.
What a reduction actually is
A proper crown reduction shortens the branches back to suitable growth points — side branches large enough to take over as the new leader. The tree ends up smaller but still shaped like itself, and it seals the wounds and carries on.
If a quote is materially cheaper than the others, this is the first thing worth asking about. Topping is quicker, so it is cheaper to carry out.
The five things that set the price
| Factor | Why it moves the number |
|---|---|
| How much comes off | A 15% reduction and a 30% reduction are very different amounts of time and material |
| Height and spread | Sets the crew size, the climbing time and the equipment |
| Species | Dense hardwood is slower to cut and far heavier to lower |
| Access | Whether a chipper reaches the tree, or every branch is carried out |
| What is beneath | Clear ground allows dropping; buildings mean roped sections |
Ask for an outcome, not a number of feet
The commonest mistake at quotation is specifying a height. "Take six feet off" sounds precise, but it takes no account of where the growth points are, and it can force cuts into places the tree will not recover well from.
Describing the outcome works far better. "I want the light back into that window", "I want it clear of the conservatory roof", "I want it manageable so it doesn't need doing again for five years" — each of those points to a different and often cheaper piece of work.
How much can safely come off
As a general rule, a healthy broadleaf tree tolerates a reduction of around a quarter to a third of the crown in a single operation. Beyond that you are stressing the tree, and stressed trees respond with vigorous regrowth, which means you are paying again sooner.
Older trees want less. Large cuts on a mature tree take years to seal and can start decay, so a modest reduction now and another in a few years is usually both kinder to the tree and cheaper over the decade than one severe cut.
Conifers are the exception, and it matters
Almost every conifer — Leylandii, Lawson, spruce, pine — will not regrow from bare brown wood. Cut past the green and it stays brown permanently. Yew is the notable exception and does reshoot from old wood, which is why it has been used for formal hedging for centuries.
Before agreeing a reduction on a conifer, push a hand into the foliage and find out how deep the green actually goes. That depth is the limit of what can be taken off, whatever figure you had in mind. It is a two-minute check and it is the difference between a tree that recovers and one that is brown for the rest of its life.
Is the tree protected?
Reduction counts as work to the tree, so the same rules apply as for any other operation. A tree in a Bromsgrove conservation area needs six weeks' written notice to Bromsgrove District Council; a tree with a Tree Preservation Order needs written consent, at any size. Worth establishing before you commit to a date.
How long a reduction lasts
This is worth asking at quotation, because it turns a price into a cost per year. A well-judged reduction on a healthy broadleaf typically holds for three to five years before it wants looking at again. A hard reduction on a vigorous species can be back within two, because the tree responds to heavy cutting with heavy growth.
Thinking about reducing a large tree?
Tell us roughly how tall it is and what you want to change about it. We'll arrange a free quotation based on the actual work required.
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