My aunt has had a house at Hannahs Bay on the Rotorua lakefront since 1978, and for most of that time the coast redwood in the front corner was the thing everyone photographed. Planted in the late 1950s, it was 32 metres tall by 2022 and over a metre through at the base. It stood 4 metres from the house and 6 metres from the neighbour’s garage, and its roots ran under the lawn to within a few metres of the lake edge. When a 2022 arborist inspection found a 1.8-metre seam of decay at the base on the lake side and a lean that had increased since the previous check, the question stopped being whether and became how.
I drove up from Christchurch because my own macrocarpa in Sydenham is 25 metres and on a boundary; I wanted to see what a big removal in a tight space looks like.
Why the redwood had to go
Coast redwoods in Rotorua grow fast in the pumice and the rain. A single specimen on a lawn is not a forest tree; it has no neighbours to share wind load, its roots are shallow in pumice, and in the lakefront settlements the water table is close to the surface. My aunt’s tree had a soft, sunken area at the base where a root had been damaged when the sewer lateral was replaced in the 1990s; decay had worked up from there. The tree was putting on weight at the top faster than the base could carry it. A 32-metre tree with a compromised base and a house within its fall line is not something you monitor.
Parts of the lakefront have warm soil and hydrogen sulphide seeping up, making root systems shallower than the size of the tree suggests. Nobody could say how much that contributed, only that it did not help.
Dismantling, not felling
There was no room to fell it; the only open direction was the lake, and the tree would have reached the water. Instead it was taken apart from the top down over two days. A climber went up on ropes, took out the upper crown in pieces of 100 to 200 kilograms, and lowered them to the ground workers. Once the tree was a bare pole of about 20 metres, a truck-mounted crane arrived for the trunk sections, which at 1.2 to 1.5 metres long and up to a metre in diameter weighed 900 kilograms to well over a tonne each. The crane parked on the road and reached over the front fence; the largest lift was 1.4 tonnes at a 14-metre radius.
Rigging trunk sections off the tree would have loaded the suspect stem and dropped pieces into a landing zone 3 metres wide between the house and a garden wall. The crane added roughly NZ$1,600 for the half day and was the cheapest part of the job in terms of risk removed.
What it cost and what was in the price
The quotes came in between NZ$6,500 and NZ$11,000 excluding GST. The spread was about method: the cheapest wanted to rig everything off the tree over three days; the one my aunt chose priced two days plus the crane. The price included chipping the brash, carting the trunk wood, and a traffic management plan because the crane blocked a lane. It did not include the stump. Grinding to 300 mm below ground was another NZ$700 to NZ$900, and it matters because redwood coppices from the stump and roots if you leave it. Six months after grinding, shoots were still coming from roots under the lawn.
Two other costs surprised her. The lawn needed re-levelling after the crane’s outrigger pads left 40 mm depressions in the soft ground, about NZ$400, and the neighbour’s garage roof had to be checked for damage from falling debris.
Consent and the lake edge
The tree was not scheduled in the district plan and the section was not in a protected overlay, so no consent was needed for removal itself. The lake margin was the question; anything within a set distance of the water can trip regional rules about earthworks and vegetation. The stump grinding stopped well short of the bank and no soil was moved, so nothing triggered, but it is the kind of thing to ask before the crane is booked, not after.
What struck me watching was how much of the two days was planning and rigging rather than cutting. The sawing on a tree that size is a small fraction of the time; the rest is making sure every piece goes where it is meant to. That is the difference between a Rotorua tree removal crew that dismantles big trees regularly and someone with a chainsaw and a ute, and beside a lakefront house it is not a difference to save money on.
Frequently asked questions
How much does it cost to remove a 30-metre tree in New Zealand? For a large tree dismantled in sections beside a house, expect NZ$5,000 to NZ$12,000 excluding GST, plus NZ$500 to NZ$1,000 for stump grinding. A crane adds NZ$1,200 to NZ$2,500 but often shortens the job and reduces risk.
Do you need consent to remove a tree in Rotorua? Not for an unscheduled tree on a residential section, but trees listed in the district plan, trees in protected overlays and vegetation near a lake margin can trigger district or regional rules. Check before booking the work.
Will a redwood stump regrow? Yes. Coast redwood sprouts vigorously from the stump and from roots, so the stump should be ground out or treated, and shoots removed for a year or two afterwards.