Tree Surveys Explained: BS5837, Mortgage & Planning Reports in Harrogate

Most people don't go looking for a tree survey. Someone tells them they need one, usually a planning officer, a mortgage lender or a solicitor mid-purchase, and suddenly it's a box that has to be ticked before things can move forward. This guide explains the different types of tree survey, when you actually need each one, and what to expect.

A tree survey is a separate service from standard tree surgery. It's an assessment and a written report rather than a job with a chainsaw, and it needs to come from someone qualified to give it. Our team is City & Guilds NPTC qualified with visual tree assessment training, which is the recognised method for inspecting a standing tree's condition.

Do I need a tree survey for planning permission?

If you're applying for planning permission and there are trees on or near your site, the answer is usually yes. The council will typically ask for a survey carried out to BS 5837:2012, the British Standard covering trees in relation to design, demolition and construction.

A BS5837 survey does two jobs. It records each relevant tree and gives it a quality category (A, B, C or U), and it maps the root protection area around the trees worth keeping. That second part is what saves you money: it tells you what you can realistically build, and where, before an architect draws up plans that turn out to clash with a tree you can't disturb.

The common mistake is leaving the survey until a planning condition forces it. Done early, it shapes the design. Done late, it can mean redrawing the whole thing.

What is a mortgage or homebuyer tree report?

Lenders get cautious about large trees close to a building, particularly on clay soils, because of subsidence risk. If a surveyor flags a tree during a house purchase, the lender may want a specialist report before releasing the mortgage.

These reports look at the species, how close it is to the foundations, the soil, and whether there's any actual evidence of movement. More often than not the conclusion is reassuring: the tree is fine and the lender simply needs that confirmed in writing. But it does need to be in writing, and it's usually holding up a sale, so the sooner it's commissioned the better.

What about a tree that's just worrying me?

Sometimes there's no planning application and no house sale. You've just got a tree that's making you uneasy: a crack you've noticed, fungus at the base, a large limb over the patio, or a lean that seems worse after winter.

That calls for a straightforward tree health and safety inspection. It's a visual assessment of the roots, trunk, branches and crown, with an honest verdict on whether anything needs doing. Often the answer is that there's nothing to worry about and you should keep an eye on it. When work is needed, you'll get a clear explanation of what and why, whether that's crown reduction, crown thinning, tree pruning or, where the tree is beyond saving, removal and felling.

If your tree is protected by a Tree Preservation Order or sits in a Conservation Area, a survey is also the document that supports your application to the council. Our guide to Tree Preservation Orders in North Yorkshire covers that side in detail.

What about emergency situations?

A survey isn't always something you can plan in advance. If a storm brings a tree down or a large limb fails overnight, the priority is making the site safe rather than a formal report. Our emergency tree services are available for exactly those situations, and we can document the condition of the tree as part of that response if it's needed for insurance or a council record.

What happens during a survey?

There's no mystery to it. We come out, walk the site, and assess each relevant tree from the ground using visual tree assessment, which covers the vast majority of domestic jobs. Occasionally a tree warrants closer investigation, such as suspected decay in a veteran specimen, and we'll tell you if that's the case rather than guessing.

You then get a written report with the findings and clear recommendations, plus whatever the purpose requires: the tree categories and constraints plan for a BS5837 job, or the species-and-distance assessment for a mortgage report. For planning and lending work, the report is written to be handed straight to the council, surveyor or solicitor.

What does a tree survey cost?

As with our tree surgery work, we don't publish fixed survey prices because no two jobs are the same. What changes the figure is how many trees are involved, the type of report, and how complex the site is. We look at what you actually need and give you one clear, fixed figure with no open-ended day rates.

Frequently asked questions

How long does a tree survey take? The site visit for a typical domestic property is usually a matter of hours, with the written report following shortly after. Larger or more complex sites take proportionally longer.

Can you survey a tree with a TPO? Yes. If your tree has a Tree Preservation Order or is in a Conservation Area, a survey is exactly what supports your application to the council for consent to carry out work.

Do you cover my area? We cover Harrogate, Knaresborough, Ripon, Wetherby and the surrounding North Yorkshire villages. If you're not sure, just ask.

Not sure which survey you need?

Tell us what's prompted it, whether that's a planning application, a house sale or a tree you're worried about, and we'll point you to the right one. Tom is City & Guilds NPTC qualified and the business is fully insured.

Get in touch for a free no-obligation quote. You may also want to read our guides to how much tree surgery costs in Harrogate and Tree Preservation Orders in North Yorkshire.