What Is a Tree Preservation Order?

A Tree Preservation Order, often referred to as a TPO, is a legal protection placed upon individual trees, groups of trees or woodlands that are considered to provide significant public amenity.

In simple terms, it means certain works cannot normally be carried out without the consent of the Local Planning Authority.

That protection exists because some trees contribute far more than simply occupying private land.

They shape streetscapes. Define historic landscapes. Support biodiversity. Provide shade. Store carbon.

Offer visual character that benefits the wider community.

When those trees are altered or removed, the impact extends beyond the property on which they stand.

A Tree Preservation Order recognises that wider value. It does not mean protected trees can never be managed. Deadwood can still require removal. Defects may still need addressing. Dangerous trees can still be made safe. The difference is that the work must be properly justified.

Our Philosophy

People sometimes assume that advising on Tree Preservation Orders means choosing a side.

The homeowner wants one thing. The council wants another. The tree sits somewhere in the middle. We see it rather differently. Our responsibility is not to stand with one party against another. Our responsibility is to stand alongside good arboriculture. That means following the evidence wherever it leads.

If the evidence demonstrates that a mature protected tree can continue thriving with little or no intervention, we will explain why.

If the evidence demonstrates that pruning is justified, we will explain that.

If removal genuinely becomes the only reasonable option, we will support that recommendation with clear evidence and careful reasoning.

Every recommendation is guided by the same principles that underpin all of our work.

We balance the needs of the client, the tree, the surrounding landscape and the wider ecology.

We recommend the minimum intervention necessary.

We explain not only what we recommend, but why.

Professional judgement is our greatest strength because no two protected trees, and no two protected sites, are ever exactly the same.

We Build Evidence, Not Applications

One of the biggest differences between simply completing a Tree Preservation Order application and providing professional arboricultural advice is the order in which the process takes place.

Some people begin with a desired outcome.

"I'd like this tree reduced." "I'd like it removed.""I'd like more light in the garden."

They then look for reasons to support that outcome. We believe that approach is fundamentally backwards.

Our process begins with the tree. We inspect it carefully. We assess its condition. We consider its species, age, vitality, structural characteristics and surroundings.

We think about the potential consequences of intervention, but also the consequences of doing nothing.

Only after we have gathered the evidence do we begin discussing recommendations.

That distinction matters enormously.

We are not simply submitting applications.

We are building an evidence base that allows everyone involved, including the client, the Local Planning Authority and ourselves, to understand why a particular course of action is appropriate.

If an application is eventually submitted, it should be the natural conclusion of that process, not the starting point.

Helping Clients Understand the Process

One aspect of our work that often surprises people is how much time is spent talking rather than writing.

Many clients have never encountered a Tree Preservation Order before.

They understandably feel uncertain about what can and cannot be done.

Some assume the council will refuse any request.

Others believe they have an automatic right to carry out whatever work they feel is appropriate because the tree grows on their land.

The reality sits somewhere between those two positions.

Part of our role is simply helping people understand how the system works.

We explain what the Local Planning Authority is trying to achieve.

We explain what evidence is likely to be required.

We explain when an application is unlikely to succeed and, just as importantly, when there is strong justification for making one.

Those conversations often prevent unnecessary expense and disappointment because expectations become grounded in the biological reality of the tree rather than assumptions or frustration.

We have found that informed clients almost always experience a smoother application process because they understand the reasons behind it.

The Relationship Between Arborists and Tree Officers

People sometimes assume that arborists and Tree Officers spend their time arguing with one another.

That certainly happens on occasion.

Like any profession, there are differing opinions, different personalities and different interpretations of individual situations.

Our experience, however, is that the vast majority of arborists and Tree Officers are ultimately trying to achieve exactly the same thing.

They want appropriate tree work to be carried out where it is genuinely necessary. They also want important trees protected from unnecessary harm. That shared objective is worth remembering. It encourages respectful dialogue rather than confrontation, it encourages evidence rather than emotion, and most importantly, it creates better outcomes for the trees themselves.

Where disagreements do arise, our aim is always to return to the evidence.

Not because evidence eliminates every difference of opinion.

But because it provides the strongest possible foundation for constructive discussion.

 

Tree Reports

Tree Risk Assessment

​

When We Recommend Making a Tree Preservation Order Application

One of the first conversations we have with any client is not about paperwork, but about justification. Before discussing application forms, timescales or the likelihood of approval, we ask a much simpler question. "What is the biological or practical reason for carrying out this work?" The answer to that question shapes everything that follows.

There are occasions where the justification is immediately obvious. A tree may have developed structural defects that create an unacceptable level of risk. It may have suffered storm damage, experienced significant decline or begun interacting with nearby structures in ways that genuinely require management. In other situations, the justification is less straightforward. A homeowner may simply feel that a tree has become too large, blocks light or dominates part of the garden. Whilst those concerns are entirely understandable, they do not automatically justify intervention to a protected tree.

We believe it is far better to have an honest conversation before an application is submitted than to encourage a client to spend money pursuing a request that has little realistic prospect of success. There have been many occasions where we have advised clients that, based on the evidence available, we do not believe the Local Planning Authority would be able to support the works they hoped to carry out. Some clients have chosen to proceed regardless, and the outcome has generally been exactly as we anticipated. Although those conversations can occasionally be disappointing, they also demonstrate one of our core principles. Our role is not to tell people what they want to hear. It is to provide the most accurate advice we can, based on the evidence available at the time.

When we do believe there is sound justification for an application, our approach changes completely. We begin gathering evidence methodically, documenting the condition of the tree, recording any relevant defects, considering the wider site and building a clear explanation that demonstrates not only what we are recommending, but why those recommendations represent reasonable arboricultural practice.

Building a Case Rather Than Completing a Form

One of the greatest misconceptions surrounding Tree Preservation Order applications is that success depends upon completing the paperwork correctly. Whilst a properly completed application is obviously important, the application form itself is only the final stage of a much larger process.

Long before we begin writing, we are observing, measuring and questioning. We are asking whether the proposed work is proportionate, whether less intrusive alternatives exist and whether the long term health of the tree can be preserved whilst still achieving the client's objectives. Every observation becomes another piece of evidence and every piece of evidence helps us understand whether the proposed works are genuinely justified.

Over time, this changes the nature of the application itself. It stops becoming a request for permission and instead becomes a professional explanation. Rather than saying, "Our client would like to reduce this tree," we are able to explain why a reduction is appropriate, what biological or structural issues have led to that recommendation and why alternative approaches would be less suitable. That additional context is often invaluable because it allows the responding Tree Officer to understand not simply the proposed works, but the reasoning behind them.

Southfleet Observation

One of the biggest changes in my own career has been recognising that a good Tree Preservation Order application is not an exercise in persuasion. It is an exercise in explanation. If the evidence is strong, it should be capable of supporting the recommendation without exaggeration or unnecessary language.

A Case That Changed My Perspective

One application in particular reinforced how important context can be. We were instructed to advise on two mature Oak trees growing side by side. Over many decades one tree had established itself above the other, forcing its neighbour to grow at a pronounced angle in search of sunlight. The result was a substantial Oak extending across the client's property, with the longer lateral limbs projecting directly over areas where falling deadwood had already become a concern.

From an arboricultural perspective, the solution was relatively straightforward. Most of the canopy required only modest pruning of approximately one metre, whilst two or three particularly extended limbs required a more significant reduction of around three metres to restore a more balanced crown.

Unfortunately, the application process required the proposal to be expressed using only the overall dimensions of the tree before and after pruning. That simple numerical description could not adequately explain that different parts of the canopy required different levels of intervention. We repeatedly clarified that we were not proposing a uniform three metre reduction, but a selective reduction reflecting the biology and structure of the individual branches.

The response remained the same. The application would only be considered if the reduction was described as a single overall figure.

Eventually, our client, understandably frustrated by the lengthy correspondence, instructed us to accept a uniform one metre reduction simply to move the process forward. We explained that this would not resolve the underlying issue and would almost certainly require further applications in the future, but there came a point where continuing the argument served nobody.

When we later carried out the approved work, I asked the client a simple question.

"What did the Tree Officer say when they came to inspect the tree?"

Her answer genuinely surprised me.

"They never came to look at it."

That moment stayed with me because it reinforced an important lesson. The difficulty had not arisen because anybody involved wanted poor arboricultural outcomes. It arose because the application process had reduced a complex biological structure to a handful of measurements, removing much of the context that would have made the proposal easier to understand.

It reminded me that one of our most important responsibilities is to communicate that missing context as clearly as possible. Trees cannot always be reduced to dimensions on a form. They are living structures with unique architecture, individual defects and biological characteristics that deserve explanation rather than oversimplification.

Good Arboriculture Depends Upon Good Communication

It is easy to assume that disagreements surrounding protected trees arise because people fundamentally disagree about the trees themselves. In our experience, that is often not the case. More commonly, disagreements arise because different people are working with different information.

The homeowner understands how the tree affects their daily life.

The Tree Officer understands the legislative framework and the wider public interest.

The arborist has the opportunity to stand between those two perspectives, interpreting the biology of the tree and communicating it in a way that allows both parties to make informed decisions.

That is why we see ourselves as far more than application writers. We are interpreters, translating the language of the tree into evidence that can be understood by homeowners, Local Planning Authorities and anyone else with an interest in the future of that landscape.

 

Tree Reports

Tree Inspections

Arboricultural Consultancy

​

When New Evidence Changes Everything

One of the most important disciplines in arboriculture is remaining willing to change your opinion.

That may sound obvious, but it is remarkably easy to form an early impression of a tree and then spend the rest of the inspection subconsciously looking for evidence that supports it. Human beings naturally seek to confirm what they already believe. Good arboriculture requires us to do the opposite.

Our philosophy has always been simple. Gather the evidence first, then make the decision.

Sometimes that evidence confirms your initial assessment.

Sometimes it completely changes it.

A mature Sycamore in Farningham remains one of the best examples I have encountered. Viewed from the ground, it appeared to be a healthy, vigorous tree. The canopy was full, the foliage was vibrant, annual growth appeared entirely normal and there was little to immediately concern us beyond a relatively small cavity visible low on the stem and some ivy beginning to establish within the crown. Most people, including experienced arborists, could have walked past that tree and concluded that it was in excellent condition.

Something about its structure, however, prompted us to investigate further. The crown architecture suggested that the tree may have suffered a significant failure many years previously, and the visible cavity hinted that there might be more occurring internally than was immediately apparent. Rather than making assumptions from the ground, we recommended a closer inspection.

Once we climbed into the crown and removed the ivy, the true condition of the tree became obvious. The cavity extended throughout the entire main stem. Sunlight could be seen passing through the trunk, which had become little more than a living cylinder of cambium surrounding extensive decay. Externally the tree appeared healthy. Internally it had lost almost all of its structural integrity.

By coincidence, the Tree Officer was visiting the site that same day to discuss unrelated protected trees. We showed him what we had discovered and, having seen the evidence for himself, he immediately requested that the tree be removed as a matter of public safety.

That experience reinforced something we have learned repeatedly throughout our careers. Trees do not always tell their story from the ground. Sometimes careful investigation reveals exactly what we expected to find. Sometimes it reveals something entirely different. Our responsibility is to remain open to both possibilities.

Working With Tree Officers Rather Than Against Them

One question we are occasionally asked is whether Tree Officers and arborists are naturally at odds with one another.

The honest answer is that, occasionally, they are.

Different professionals will inevitably hold different opinions, just as doctors, architects or structural engineers sometimes reach different conclusions. There are also practical realities that influence decision making. Local authorities work within limited budgets, individual councils operate slightly differently and Tree Officers often manage significant workloads whilst carrying the responsibility of protecting some of the most important trees within their districts.

Against that backdrop, disagreements are inevitable.

What is important is how those disagreements are approached.

Our experience has been that the vast majority of Tree Officers and professional arborists are trying to achieve the same objective. We all want necessary work to proceed where there is sound justification, whilst preventing unnecessary harm to valuable trees. When discussions remain centred on evidence rather than emotion, those shared objectives usually become remarkably clear.

Occasionally, however, relationships become strained before professional advice has even been sought. We are sometimes contacted by homeowners who have already spoken directly with the Local Planning Authority and, understandably wanting to strengthen their own case, have focused on personal frustrations rather than arboricultural justification.

One consultation in Sidcup illustrated this perfectly. A client asked us to inspect a mature Ash tree protected by a Tree Preservation Order. The tree required some routine deadwooding but was otherwise in good physiological condition. During our discussion she asked whether we could identify a defect that would justify removing the tree entirely. When I explained that there was no evidence supporting such a recommendation, she eventually admitted that a Tree Officer had already inspected the tree and suggested that further investigation might be worthwhile, albeit potentially expensive. Rather than pursuing that route, she had simply explained that she wanted the tree removed because it shaded her swimming pool.

From her perspective, that was an honest answer.

From the Tree Officer's perspective, it demonstrated that the requested works were not being driven by the condition of the tree.

The application was refused.

That experience highlights an important lesson. Tree Preservation Order applications are not judged against how inconvenient a tree has become. They are judged against whether the proposed works are justified. Once that distinction is understood, conversations between homeowners, arborists and Tree Officers tend to become far more constructive.

Southfleet Principle

We are not here to build a case for removing trees.

We are here to build the strongest possible case for the correct arboricultural outcome, whatever that outcome may be.

Whose Side Are We On?

Clients occasionally ask us this question directly, particularly when they have become frustrated with a planning process or previous decisions made by the council.

The answer is both simple and, perhaps, slightly unexpected.

We are on the side of good arboriculture.

That means we are not employed to tell clients what they want to hear, nor are we employed to defend every decision made by a Local Planning Authority. Our responsibility is to understand the biology of the tree, gather the available evidence and provide recommendations that balance the needs of the tree, the client, the surrounding landscape and public safety.

Sometimes that means supporting an application for substantial work.

Sometimes it means recommending only very light intervention.

Occasionally it means advising a client that no application should be submitted at all because there is simply no reasonable arboricultural justification.

We appreciate that those conversations are not always what clients hope to hear. However, we have found that honesty at the beginning of a project almost always leads to better outcomes than false optimism followed by disappointment.

More importantly, it preserves something that takes years to build and only moments to lose.

Trust.

Our clients know that our recommendations are not influenced by the amount of work involved or the commercial value of a project. They are influenced by the evidence we gather and the professional judgement we apply to it.

That independence is one of the reasons many of our clients continue to return to us year after year, asking not simply for tree work, but for advice.

The Value of Independent Advice

There is an important distinction between employing somebody to carry out tree work and employing somebody to advise you about trees.

The first asks, "Can you do this work?"

The second asks, "Should this work be done at all?"

We believe the second question is almost always the more important one.

Anyone can complete an application form.

Anyone can quote for a reduction or a removal.

Professional advice begins much earlier. It begins with understanding the tree, the legislation, the landscape and the long term consequences of intervention. Only then can sensible recommendations be made.

Our hope is that, by the end of every consultation, clients feel exactly the same way.

They understand the reasoning behind our advice.

They know what their options are.

Most importantly, they have confidence that those options are based upon evidence rather than assumption.

 

Tree Reports

Tree Inspections

Arb & Environmental

​

Common Misconceptions About Tree Preservation Orders

Tree Preservation Orders are often surrounded by misunderstanding, and many of those misconceptions create unnecessary frustration long before an application is ever submitted. In our experience, a little understanding goes a remarkably long way.

"A Tree Preservation Order means I can't touch my tree."

This is perhaps the most common misconception we encounter. A Tree Preservation Order does not mean a tree can never be pruned, reduced or, in exceptional circumstances, removed. It simply means that proposed works must be properly justified and approved before they are carried out. Many protected trees continue to be managed successfully throughout their lives.

"If I own the tree, I should be able to do whatever I like with it."

Whilst protected trees may stand on private land, their value often extends well beyond the property boundary. Mature trees contribute to the wider landscape, support biodiversity, improve air quality, provide shade, store carbon and often become important landmarks within their communities. Tree Preservation Orders recognise that wider public benefit and ensure it is considered alongside the rights of the property owner.

"The council always says no."

This simply has not been our experience.

Where applications are well justified, supported by evidence and propose reasonable arboricultural works, approvals are regularly granted. Equally, there are occasions where applications are refused because the proposed works would cause unnecessary harm or because insufficient justification has been provided. Neither outcome should be viewed as a victory or a defeat. Both are part of a system designed to encourage thoughtful decision making.

"A Tree Preservation Order application is just another form."

The application form itself is one of the least important parts of the process.

The real work happens beforehand. It involves understanding the biology of the tree, identifying any defects, considering alternative management options, assessing the surrounding environment and presenting clear evidence that explains why a particular recommendation is appropriate.

That is where professional advice adds genuine value.

Professional Standards

Our advice is informed by practical experience, current arboricultural research and recognised industry guidance. Depending upon the circumstances, our recommendations may be supported by documents including BS 3998: Tree Work Recommendations, relevant planning legislation, Tree Preservation Order regulations, Conservation Area legislation and ecological considerations such as the Wildlife and Countryside Act 1981 where nesting birds or other protected species may be affected.

Standards provide an essential framework, but no published document can account for every individual tree. Every Oak, Beech, Ash or Sycamore has developed within its own unique environment and carries its own history. Professional judgement exists to bridge the gap between written guidance and the biological reality standing in front of us.

Frequently Asked Questions

Can I prune a Tree Preservation Order tree?

Often, yes. Many pruning operations receive consent where they are supported by good arboricultural justification and represent proportionate management of the tree.

How long does a Tree Preservation Order application take?

Timescales vary between Local Planning Authorities, but most applications are determined within the statutory period. Where works are urgent because of an immediate safety concern, separate emergency provisions may apply.

Can I remove a protected tree if it is dangerous?

Potentially, yes. However, the level of evidence required depends upon the circumstances. Where a tree presents an immediate risk, different legal provisions may apply, but it is always advisable to seek professional advice before undertaking any work.

​

Emergency Tree Works

​

Will my application definitely be approved if you submit it?

No professional should ever promise that.

What we can promise is that any application we prepare will be honest, evidence based and supported by clear arboricultural reasoning. The final decision always rests with the Local Planning Authority.

What if my application is refused?

A refusal does not necessarily mean that no work will ever be appropriate. It may indicate that additional evidence is required, that a different specification would be more suitable or that the tree can continue to be managed safely without intervention. We will always explain your options and help you understand the reasoning behind the decision.

Do Tree Preservation Orders only protect healthy trees?

No. A protected tree may still develop defects, decline or require management as it ages. Protection does not imply perfect health. It simply means that decisions about the tree require careful consideration.

Can you deal with the entire application process for me?

Absolutely. From the initial inspection and evidence gathering through to preparing the application and discussing recommendations with you, we can manage the process from beginning to end, ensuring you understand every stage along the way.

 

Tree Reports

Tree Inspection

​

What We Hope Every Client Understands

If there is one thing we hope every client takes away from a Tree Preservation Order consultation, it is this.

The legislation is not there to prevent people looking after trees.

It exists because some trees are important enough that decisions about their future deserve careful thought.

Most homeowners are not trying to damage their trees.

Most Tree Officers are not trying to frustrate homeowners.

Most professional arborists are not trying to generate unnecessary work.

In reality, almost everybody involved wants the same outcome. Healthy, safe trees that continue contributing to the landscape whilst allowing people to enjoy and manage their property responsibly.

Our role is to help everyone arrive at that outcome through careful observation, honest communication and evidence based professional judgement.

Good decisions begin with good evidence.

A Final Reflection

Some of the finest trees in Kent were already mature before the houses around them were built. They have witnessed generations of families, changing landscapes and the gradual evolution of the places we now call home.

When we are asked to advise on a protected tree, we are conscious that we are making recommendations about something that may have stood quietly for a century or more.

That responsibility should never be taken lightly.

Protected trees are not protected because they are untouchable.

They are protected because they matter.

When decisions affect something that has taken decades, or even centuries, to become what it is today, those decisions deserve time, evidence and careful professional judgement.

If you are unsure about a protected tree, whether you are considering applying for consent, responding to concerns raised by a neighbour or simply looking for honest advice, we would be delighted to help. We will inspect the tree carefully, gather the evidence, explain our findings in plain English and help you understand the options available so that you can move forward with confidence.

 

Contact Southfleet

​

 

 

About the Author

Jackson Moran

Founder, Southfleet Tree Services and Arb & Environmental

Level 4 Arboriculture (Merrist Wood)

AA Technician Member

Over ten years of practical arboricultural experience across tree surgery, tree inspection, surveying and long term landscape management.

Jackson believes the best arboriculture balances the needs of trees, people and the wider landscape through evidence based, proportionate decision making. His work spans practical tree care through Southfleet Tree Services, professional consultancy through Arb & Environmental and, in the future, landscape implementation through Hawthorne Surry.

His guiding principle is simple:

Gather the evidence first. Then make the decision.

That philosophy underpins every inspection, every report and every recommendation he produces, ensuring clients receive advice that is honest, carefully considered and always grounded in the best interests of the trees, the landscape and the people who live alongside them.