The six-week conservation-area notice, walked through.
Canterbury district holds 97 conservation areas. If you own a garden inside one - most of the walled city, all of Wincheap, most of St Dunstan's, Northgate, the Old Dover Road belt, plus dozens more across the villages - then any tree in your garden over a certain size needs six weeks' written notice to the council before it's touched. Get it wrong and the penalty is up to £20,000 per tree in a Magistrates' Court and unlimited in the Crown Court. Here's how it actually works.
The rule is section 211 of the Town and Country Planning Act 1990. In a conservation area, no one may cut down, top, lop, uproot, wilfully damage or wilfully destroy a tree without giving the local planning authority - here, Canterbury City Council - six weeks' written notice of the proposed work. The council either objects (and typically then serves a Tree Preservation Order to formalise the protection), consents in writing, or lets the six weeks lapse. If they lapse, you're free to proceed for the next two years.
When it bites - the 75mm rule
Not every twig in a conservation area needs a notice. The threshold is a stem over 75mm diameter measured at 1.5m above ground level. That's about the thickness of a wine bottle at chest height. Anything smaller is exempt. Multi-stemmed shrubs are measured on the largest stem.
Routine trimming of hedging species - privet, laurel, leylandii, thuja, box - is exempt regardless of stem size. The definition of "tree" is deliberately unclear in the Act, and case law has drifted towards excluding species maintained as a hedge from the s.211 requirement. Where the trouble starts is with mature standards within a hedge line. An old holly, a self-sown yew, a beech that grew out of a hornbeam hedge and is now three storeys of trunk - each of those is a tree, each hits the 75mm threshold, each needs the notice.
A real case, walked through
Client in the Old Dover Road conservation area. Victorian villa, long back garden, boundary hedge of mixed native species that has been unmanaged for maybe fifteen years. Client wants it reduced from twenty feet back to six. Inside the hedge line: two self-sown yews, a holly, and what turned out to be a lime that had grown up through the middle. All four measured over 75mm at 1.5m. All four triggered s.211.
The paperwork: a written notice to CCC's tree officer, submitted through the council's online notification portal. Includes a plan showing the property boundary and the location of each tree, a photograph of each, a description of the work proposed, and the reason. Once submitted, the six weeks starts. In this case the council came back after three weeks with a query on the lime (why was removal necessary rather than reduction), we submitted a supplementary answer with an arboricultural note, and consent came through in week five. We started work in week six.
The neighbour opposite tried to short-circuit an oak on their front lawn the previous year, no notice, and was reported by a passerby. Investigation, prosecution, £8,000 fine plus replanting order. The council will act when notified, particularly on high-visibility trees along the Old Dover Road, along New Dover Road, and inside the walled city.
How to check if you're in a conservation area.
Canterbury City Council publishes conservation-area boundaries on its planning portal ArcGIS layer. Search your postcode. If it shows a coloured overlay, you're in one. The 97 areas across the district cover most of the historic urban cores and dozens of village conservation areas - Bridge, Bekesbourne, Chartham, Sturry, Fordwich, Chilham, Wickhambreaux and many more. Rural properties outside these designated areas are not affected by s.211.
Where the confusion sits
The 2016 Article 4 Direction is not this. Central Canterbury has an Article 4 Direction from February 2016 that removed permitted-development rights for C3-to-C4 HMO conversions. Landlords ask us about it constantly, assuming it affects hedges. It doesn't. Hedges and trees are governed by TCPA 1990 s.211, not by the Article 4.
TPOs are separate. A Tree Preservation Order is a specific instrument that protects a named individual tree or defined group. If a TPO is on your tree, you need explicit written consent to work on it - a six-week notice isn't enough. Check the CCC Protected Trees open-data layer to see if any tree on your plot is TPO-listed. Some are, particularly along the Whitstable Road corridor and around the Cathedral Precincts.
Dead, dying, or dangerous trees are exempt. The Act allows immediate work on trees that are dead, dying, or presenting an urgent safety risk, without notice - but you must still give five working days' written notice after the fact, with photographic evidence. "It looked a bit dodgy" is not sufficient. In practice we insist on an arboricultural report before invoking the exemption, because the burden of proof is on you.
The penalty
Under the Act, breach of s.211 or damage to a protected tree carries a fine of up to £20,000 per tree in the Magistrates' Court and an unlimited fine on indictment in the Crown Court. Courts also routinely impose replanting orders, which for a mature specimen tree can run to another five-figure sum in nursery stock, transport, and aftercare. Insurance won't cover it - it's a criminal offence, not a civil one.
Prosecutions in Canterbury are not routine, but they happen. The council keeps enforcement records, and high-visibility breaches inside the walled city or along the Old Dover Road get reported by neighbours within hours.
What we do before we quote
For any job inside a Canterbury conservation area, we measure the stem of every tree in the work zone before we quote. Anything at or over 75mm at 1.5m goes on a list, and the six-week notice is submitted before we book the diary date. If the client wants the job done next weekend, we tell them honestly - we can trim the hedging species now, and we can come back for the standards in six weeks. Skipping the notice to hit a deadline is not something we do.
In a conservation area and not sure?
Send your postcode and photos of any mature trees in the work zone to hello@canterburyhedges.co.uk, or call 07763 100 477. We'll tell you whether s.211 applies, submit the notice for you if it does, and phase the work around the six-week window.
Sources: Town and Country Planning Act 1990, section 211; Town and Country Planning (Tree Preservation) (England) Regulations 2012; Canterbury City Council conservation areas register and tree protection guidance; Planning (Listed Buildings and Conservation Areas) Act 1990.