Why guarantees matter in landscaping
Landscaping is a mix of outdoor construction, plant selection, drainage, irrigation, paving, retaining walls and soft-furnishings like turf or garden beds. Because so many parts of the job sit outside for years, mistakes can be expensive to fix. A gravel path that sinks, a retaining wall that leans, or an irrigation line that leaks may not show up straight away — which is why you should ask about guarantees before work starts.
In New Zealand, a solid landscaper should be willing to put their promises in writing. That does not mean they guarantee every plant will live forever or that weather will never affect the site. It does mean they should stand behind their workmanship, explain any product warranties, and be clear about what is covered if there is a defect.
The three layers of protection you should understand
When hiring a landscaper, there are usually three separate types of protection:
| Protection type | What it covers | Who provides it | Why it matters |
|---|---|---|---|
| Workmanship guarantee | Errors in the contractor’s labour, installation, or design execution | The landscaper | This is your main protection if the work is poorly done |
| Product warranty | Defects in materials supplied, such as pavers, retaining wall blocks, pumps, lights or irrigation components | Manufacturer or supplier, sometimes the installer | Useful if a product fails despite correct installation |
| Consumer law rights | Work that is not carried out with reasonable care and skill, or products that are not of acceptable quality | The Consumer Guarantees Act 1993 | Applies even if the contract says otherwise |
A professional landscaper should explain all three, not just hand you a vague “guarantee” and leave it at that.
What a workmanship guarantee should cover
A workmanship guarantee is the landscaper’s promise that they will fix problems caused by poor installation or defective labour within a stated period. The exact length can vary depending on the type of work, but the important thing is clarity.
A useful workmanship guarantee should set out:
- the length of the guarantee period
- what is covered and what is excluded
- how defects are reported
- how quickly the landscaper will inspect the issue
- whether labour, materials, or both are covered if something needs fixing
- whether the guarantee is transferable if you sell the property
For example, if a paved patio develops uneven sections because the base course was not properly compacted, that is a workmanship issue. If a hedge dies because it was planted in the wrong season without adequate watering advice, that may also point to poor workmanship or poor specification.
A workmanship guarantee should be specific enough to be useful. “All work guaranteed” sounds reassuring, but it is often too vague to be worth much if there is a dispute.
What product warranties usually apply to landscaping
Landscaping projects often include products with their own warranties. Common examples include:
- pumps and irrigation controllers
- garden lighting and transformers
- membrane and drainage products
- retaining wall systems
- decking boards, sleepers or composite materials
- turf products, fertilisers or soil conditioners
- paving, stone, concrete products and adhesives
Product warranties are usually provided by the manufacturer or supplier, not the landscaper. A good contractor should tell you which products have warranties and pass on the warranty documents.
Keep in mind:
- warranties may require correct installation and maintenance
- some warranties only apply if the product is used for its intended purpose
- some products have wear-and-tear exclusions
- many warranties require proof of purchase and batch numbers
If a landscaper supplies the materials, ask who is responsible for claiming under the warranty if something fails. In many cases, the installer will manage the process as part of good service, but that should be confirmed upfront.
How the Consumer Guarantees Act applies in NZ
The Consumer Guarantees Act 1993 (CGA) is one of the most important protections for homeowners. It applies when you buy goods or services from a trader for personal, domestic or household use.
For landscaping services, the key guarantee is that services must be carried out with reasonable care and skill. They must also be completed within a reasonable time, and any materials supplied must be of acceptable quality and fit for purpose.
That means a landscaper cannot rely on a contract to dodge basic legal responsibilities. Even if their written warranty is short, your CGA rights may still apply.
Under the CGA, if services are faulty, the landscaper may need to:
- fix the problem
- redo the work
- pay for the cost of repair by someone else, if they refuse or cannot fix it
- compensate you for reasonably foreseeable loss caused by the failure
If the problem is serious and cannot be fixed, you may be entitled to cancel the contract for that part of the work and seek a refund or damages, depending on the circumstances.
What a good landscaping guarantee should not try to exclude
Be cautious if a landscaper’s terms try to wipe out your legal rights. In New Zealand, a contract should not attempt to remove CGA protections for ordinary household landscaping work.
Watch for clauses that say:
- “No responsibility for any defects after handover”
- “All sales final, no warranties expressed or implied”
- “Landscaper is not liable for any subsidence, movement or drainage issues” without any qualification
- “Plants are sold as-is” with no explanation of planting conditions or replacement policy
Some exclusions can be fair, such as damage caused by a storm, drought, vandalism, poor homeowner maintenance or changes made by another contractor. But exclusions should be reasonable and clearly explained.
Common landscaping issues and who is usually responsible
Landscaping work can fail for different reasons, so it helps to know where responsibility might sit.
- Paving settles or becomes uneven: often a workmanship issue if the base preparation was inadequate
- Retaining wall moves or leans: may be due to poor design, drainage, compaction or foundation work; can also involve council consent or engineering requirements
- Irrigation leaks: may be faulty fittings, poor installation or a product defect
- Plants die: can be caused by incorrect species selection, poor planting, bad timing, inadequate watering guidance or severe weather
- Drainage performs badly: may involve design, installation, site fall, or work that should have involved another specialist
This is why a written scope matters. A landscaper should spell out what they are responsible for, and where specialist trade input is needed.
When other licences, consents or regulated trades may be involved
Landscaping often overlaps with other regulated work in New Zealand. A trustworthy landscaper will know when to bring in licensed specialists or advise you to do so.
They should not carry out restricted or regulated work unless properly authorised. For example:
- Electrical work must be done by, or under the supervision of, a person authorised under the Electrical Workers Registration Board (EWRB) framework.
- Plumbing, gasfitting and drainlaying are restricted trades overseen by the Plumbers, Gasfitters and Drainlayers Board (PGDB).
- Building work such as retaining walls, decks or structures may need a building consent from your local council, depending on height, design, and site conditions.
If your landscaping project includes retaining walls, significant excavation, site drainage, lighting, or structures, ask who will handle any consent or compliance requirements. If a landscaper says consent is not needed, ask them to explain why in writing and consider checking with the council yourself.
Questions to ask before you sign
Before accepting a quote, ask these questions and get the answers in writing:
- What workmanship guarantee do you offer, and for how long?
- Which parts of the project are covered by your guarantee?
- Which product warranties apply, and who issues them?
- If a product fails, will you deal with the supplier on my behalf?
- What maintenance is required to keep the warranty valid?
- Are there any exclusions for weather, drainage, settlement or plant survival?
- Will you provide as-built information, product manuals or care instructions?
- Do you have public liability insurance?
- Do you hold any licences or qualifications relevant to the work?
- Will any work require council consent or a specialist trade?
A landscaper who answers clearly is usually easier to deal with if something goes wrong later.
What to look for in a written quote or contract
Get multiple written quotes so you can compare not only price, but also warranty terms, scope and exclusions. A cheap quote that omits guarantees can become expensive if defects appear.
Your contract should ideally include:
- a detailed scope of work
- the exact products and brands to be used
- start and completion dates, or a realistic programme
- payment stages tied to milestones
- what happens if the weather delays the job
- workmanship guarantee terms
- product warranty details
- who is responsible for cleanup and waste removal
- maintenance obligations after completion
- dispute process and contact person for defects
If the landscaper uses subcontractors, the contract should still clearly identify who is responsible to you for the final result.
If the work is faulty: your practical recourse
If you think the landscaping work is faulty, act quickly and keep records. Take dated photos, make notes of when the issue appeared, and save all emails, texts, invoices and warranty documents.
A sensible process is:
- Notify the landscaper in writing and describe the problem clearly.
- Give them a reasonable chance to inspect the issue.
- Ask for a proposed remedy and time frame.
- Do not authorise another contractor to fix major defects too quickly unless there is an urgent safety issue or the first contractor refuses to act.
If the landscaper does not respond or disputes responsibility, you can:
- seek advice from a building adviser or consumer support service
- use your contract’s dispute resolution process if it has one
- make a claim through the Disputes Tribunal for smaller claims within its monetary limit
- consider legal advice for more complex or higher-value disputes
If the issue involves council consent, structural failure, electrical faults or drainage problems, you may also need advice from the relevant authority or a qualified specialist.
How to tell if a landscaper is standing behind their work
A reputable landscaper usually:
- gives a written quote with clear exclusions
- explains the difference between workmanship and product warranties
- does not overpromise on plant survival or weather resilience
- recommends maintenance requirements in plain language
- carries appropriate insurance
- is willing to revisit defects after completion
- encourages you to ask questions before signing
By contrast, be wary of anyone who pressures you to pay a large deposit, refuses to put guarantees in writing, or says “you won’t have any comeback” after handover.
The bottom line
A good landscaping job should come with more than a pretty finish. In New Zealand, you should expect a clear workmanship guarantee, relevant product warranties, and the protection of the Consumer Guarantees Act. You should also know which parts of the project involve consent, licensed trades or specialist input.
The safest approach is simple: get at least three written quotes, check references and credentials, ask exactly what is guaranteed, and make sure the contract spells out what happens if something fails. That way, you know who is responsible before the first shovel goes in the ground.
Licensed Building Practitioner (LBP)
