How to Choose a Roofing Contractor in NZ (Without Getting Burned)

Quick answer: To choose a trustworthy roofing contractor in NZ: verify their LBP licence at lbp.govt.nz, confirm they carry public liability and worksite insurance, get a written fixed-price quote, check reviews on Google or No Cowboys, and ask about their workmanship warranty. Never hire based on price alone.

Choosing the wrong roofing contractor in New Zealand is one of the most expensive home mistakes you can make. Unlike a bad paint job, poor roofing workmanship isn’t always immediately visible — the consequences often emerge months or years later as leaks, structural damage, or compliance failures that cost tens of thousands to resolve.

This guide gives you a clear, step-by-step process for finding and hiring a trustworthy NZ roofing contractor.

Step 1: Verify Their Licensed Building Practitioner (LBP) Status

In New Zealand, roof work is restricted building work under the Building Act 2004. This means it legally must be performed or supervised by a Licensed Building Practitioner (LBP).

How to verify: Ask for the contractor’s LBP number and check it at lbp.govt.nz. The register is public and free to search. Look for:

• Active licence status
• Licence class includes “Roofing” or appropriate category
• No disciplinary actions recorded

If a contractor cannot provide a verifiable LBP number, do not hire them for roof work.

Step 2: Confirm Insurance

Ask for certificates of:

• Public liability insurance — minimum $2M; protects you if damage occurs to your property or a neighbour’s during work
• Worksite insurance — covers the contractor’s workers; without it, an injured worker on your property may become your liability
• Professional indemnity (for some types of roofing work)

A reputable contractor will produce these documents without hesitation. An evasive response is a serious red flag.

Step 3: Get Multiple Written Quotes

For any job over $1,500, obtain 2–3 written fixed-price quotes. This serves three purposes:

1. Establishes the fair market price for the work
2. Lets you compare scope, materials, and warranty terms
3. Gives you leverage if negotiating with a preferred contractor

Ensure all quotes cover the same scope — a quote that’s missing significant items isn’t cheaper, it’s incomplete.

Step 4: Check Their Track Record

Where to look:

• Google Reviews — look for pattern across multiple reviews, responses to negative feedback, volume of reviews relative to claimed experience
• No Cowboys (nocowboys.co.nz) — NZ-specific tradesperson review platform
• BuildersCrack (builderscrack.co.nz) — verified NZ tradespeople with job history
• Neighbourly — community recommendations from locals

What to look for:

• Consistent positive feedback over multiple years
• Specific project descriptions (not generic “great service” reviews)
• Evidence of responding professionally to negative feedback
• Reviews from jobs similar to yours (same material, similar scope)

Step 5: Ask About Subcontracting

“Will your own team do all the work?”

Some roofing companies win contracts and then pass the work to subcontractors who may have different — or no — credentials. The quality control and warranty implications of subcontracted work are significant.

OneRoofing only uses its own LBP-certified team. We never subcontract roofing work.

Step 6: Evaluate the Warranty

A roofing contractor confident in their work backs it with a warranty. The industry standard for quality contractors is:

• New roof installation: 5-year workmanship warranty minimum
• Major repairs: 2–5-year workmanship warranty
• Minor repairs: 1–2-year workmanship warranty

This is separate from the manufacturer’s product warranty (e.g., Colorsteel’s 30–50-year coating warranty). Always get both warranty terms in writing.

Step 7: Understand the Deposit & Payment Structure

Normal deposit for NZ roofing:

• 0% deposit for small repairs (under $1,000)
• 10–20% deposit for larger jobs
• Progress payments for large projects (milestone-based)

Red flags:

• 50%+ deposit required upfront
• Cash-only arrangements
• Payment before inspection of completed work

A professional contractor doesn’t need large deposits to fund the job — they have working capital.

The Contractor Evaluation Checklist

Before signing any contract, confirm:

• LBP licence verified at lbp.govt.nz
• Public liability insurance confirmed
• Worksite/workers insurance confirmed
• Written fixed-price quote received
• Scope of work clearly described
• Materials specified by brand/grade
• Workmanship warranty terms stated
• Start date and completion estimate agreed
• Payment terms clearly stated
• Reviews checked on Google/No Cowboys

Why OneRoofing Meets Every Criteria

OneRoofing has served Auckland homeowners for over 15 years. We’re transparent about our credentials:

• LBP-certified team (licence details available on request)
• $10M public liability insurance and full worksite cover
• Free fixed-price written quotes
• 5-year workmanship warranty on all installations
• 4.9-star Google rating across 147+ reviews
• No subcontracting — our own team does all work
• Available for Auckland, Northland, Wellington, Tauranga, and Hamilton

Frequently Asked Questions

What does LBP mean in NZ roofing? LBP stands for Licensed Building Practitioner — a government-issued licence required under the NZ Building Act for restricted building work, which includes all roof work. Verify any contractor’s LBP status at lbp.govt.nz.

What questions should I ask a roofer before hiring? Key questions: Can I have your LBP number? Do you carry public liability and worksite insurance? Is this a fixed-price quote? Who does the work — your own team or subcontractors? What warranty do you offer?

Is it worth paying more for a better roofer in NZ? Almost always, yes. The cost difference between a good and average roofer is often 10–20%. The cost difference between a good and poor roofer — when the poor work needs remediation — is often 50–200% of the original job cost.

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Ready to work with a trusted NZ roofing contractor? Call 022 196 9021 or request a free quote. OneRoofing — Licensed, insured, and backed by a 5-year warranty.