In many cases, yes — a homeowner can remove a small tree that's pushing up through a concrete path. However, before you reach for the chainsaw, there are a few important checks around council rules, tree protection orders, and safety that could save you a hefty fine or a nasty accident.
Check for Tree Protection Orders First
This is the single most important step before doing anything. Many NZ councils have District Plan rules that protect certain trees — particularly large, mature, or heritage specimens — regardless of whether they're on your property. Removing a protected tree without consent can result in significant fines.
Contact your local council (or check their GIS mapping tool online) to find out whether your tree is listed as a Notable Tree or falls within a Significant Ecological Area. Rules vary widely between councils, so don't assume — always confirm directly with your local authority.
Also check whether the tree is close to a boundary. If it straddles a neighbouring property, you'll need your neighbour's agreement before removing any part of it.
Does the Work Need a Building Consent?
Removing a tree itself generally doesn't require a building consent, but repairing or replacing the concrete path afterwards might, depending on the scope of work. Minor path repairs typically fall under Schedule 1 of the Building Act 2004 as exempt work — but always confirm this with your council before starting, as exemptions have conditions. You can find guidance on what requires consent at MBIE Building Performance.
Assessing the Tree: Is It a DIY Job?
Not every tree removal is the same. Ask yourself these questions before deciding to go it alone:
- How big is the tree? A small self-seeded sapling or young tree with a trunk under 100 mm in diameter is generally manageable for a competent DIYer. Anything larger gets progressively more dangerous.
- How tall is it? If the tree is tall enough that branches could fall on a structure, fence, power line, or person, the risk increases significantly.
- Are there overhead power lines nearby? If the tree is within falling distance of power lines, stop. This is a job for a qualified arborist and potentially your lines company. Working near live power lines is extremely dangerous.
- Is the root system extensive? A tree that has been lifting concrete for years may have a large, deep root system that's also affecting drainage pipes or foundations nearby.
How to Remove a Small Tree Through a Concrete Path
If you've confirmed the tree is unprotected, small, and away from hazards, here's a general approach:
1. Break Up the Concrete
- Hire an electric demolition hammer (jackhammer) from a hire centre — available at Bunnings or Mitre 10.
- Wear safety glasses, hearing protection, steel-capped boots, and gloves at all times.
- Break the concrete in sections, working away from the trunk.
2. Cut Down the Tree
- Use a pruning saw or chainsaw appropriate to the trunk size. If you're not experienced with a chainsaw, use a hand saw for small trunks or hire a professional.
- Cut the trunk close to ground level.
3. Remove the Stump and Roots
- For small stumps, a mattock and spade may be enough to dig out the root ball.
- For larger stumps, consider hiring a stump grinder — many hire centres stock these — or engage a local arborist to grind it. Leaving a stump in place risks regrowth and ongoing root damage.
- Apply a stump treatment product if you can't grind it, to prevent resprouting. Ask at your local hardware store for a suitable herbicide and follow label directions carefully.
4. Repair the Path
- Once the stump and major roots are removed, compact the base, add fresh AP20 compacted gravel, and re-pour concrete or lay pavers. For a neat finish, consider consulting a concreter.
Safety Notes
WorkSafe NZ takes tree work seriously — falls from height and chainsaw injuries are among the most common serious incidents in this type of work. Always:
- Keep bystanders and children well clear of the work area.
- Never work alone when using a chainsaw.
- Wear full PPE including a helmet with face shield if cutting overhead.
See WorkSafe NZ for guidance on safe tree and chainsaw work.
When to Call a Professional
Call a qualified arborist if any of the following apply:
- The tree is large (trunk over 100–150 mm diameter) or tall
- There are overhead power lines within falling distance
- The tree is protected under your District Plan
- The root system may be affecting drainage pipes or foundations
- You're not confident using a chainsaw safely
- The tree is leaning toward a structure or fence
A professional arborist has the equipment, training, and insurance to handle complex removals safely and efficiently. You can find qualified local arborists on tradedirectory.co.nz.
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