A detailed, well-structured quote is one of the best protections a homeowner has before building work begins. It defines what's included, what it costs, and what happens if things change. Most building disputes in NZ stem from ambiguous or incomplete quotes. This guide explains what a professional builder's quote should contain.
The Core Elements of a Builder's Quote
1. Project description and scope of work
The quote should describe the project clearly — not just "bathroom renovation" but specifically: - What work is being done (demolition, framing, waterproofing, tiling, fixtures, etc.) - The exact area or rooms involved - The standard to which work will be completed (reference to drawings or plans if applicable) - Any specific products or brands included (or the grade of product where brand isn't specified)
What this protects: Scope creep — the gradual expansion of work beyond what was agreed. Without a defined scope, additional charges later are difficult to dispute.
2. Materials specification
Professional quotes separate materials from labour and specify what materials are included: - Materials by name or grade where specific quality matters (e.g., "Marley roofing iron gauge 0.55mm, coloursteel finish") - Where the homeowner supplies materials vs the builder - Provisional sum (PS) allowances for materials that aren't fully specified yet
What this protects: Being substituted cheaper materials after the quote is accepted. If a quote says "timber flooring" with no specification, the builder could supply the cheapest product available. Specification prevents this.
3. Labour costs and charge-out basis
The quote should state whether it's: - Fixed price: Total labour cost is defined. You pay this amount regardless of how long it takes (subject to variations). - Cost-plus (time and materials): Labour is charged at an hourly rate. Total cost is unknown until completion. - Hybrid: Fixed price for defined elements, time and materials for unknowns
Fixed price is better for most homeowners on well-defined projects. Cost-plus makes sense where significant unknowns exist (e.g., demolition revealing unknown issues).
If cost-plus, the quote should specify: - Charge-out rate per hour (typically $85–$130/hour for tradespeople, $120–$180 for builders in Auckland, 2026) - Whether travel time is charged - How overtime or weekend work is handled
4. Consent and compliance costs
Building consent, engineering sign-off, plumbing compliance, and council inspection fees are significant additional costs. The quote should clearly state: - Whether consent has been obtained or applied for - Who lodges the consent (builder, homeowner, or designer) - Whether consent fees are included in the quote price or are extra - What inspections are included and who manages them
Common issue: Many quotes exclude consent costs, which can be $2,000–$6,000+ for significant residential work. This is legitimate to exclude but must be stated explicitly.
5. Exclusions
A well-written quote lists what is not included. Common legitimate exclusions: - Site clearance and waste disposal (often quoted separately) - Concrete supply (typically charged as a provisional sum) - Electrical or plumbing work by specialist subcontractors - Painting and finishing (if not in scope) - Landscaping or reinstatement of grounds - Costs arising from discovering unexpected conditions (rot, asbestos, substandard prior work)
Why this matters: Homeowners often assume "build a new room" includes everything. The builder may legitimately quote only for structural carpentry and leave painting, electrical, and flooring to others. Listing exclusions prevents surprises.
6. Provisional sums (PS) and PC sums
Provisional sum (PS): A budget allowance for work where the exact cost can't be determined at quote stage (e.g., "Allow PS $2,500 for concrete foundations — exact amount subject to engineer's specification").
PC sum (Prime Cost sum): A budget allowance for a specific item chosen by the homeowner (e.g., "PC sum $800 for tapware — homeowner to select").
For both: - The PS/PC figure should be realistic, not artificially low to win the job - The adjustment process at completion should be specified (actual cost vs PS, difference charged/refunded) - High PS totals relative to the overall quote indicate significant price uncertainty
Question to ask: "Is this PS realistic, and what's the likely actual cost in your experience?" A professional builder will give you a straight answer.
7. Payment schedule
The payment schedule should be clear, tied to milestones, and fair to both parties:
| Typical milestone | Typical payment |
|---|---|
| Contract signing | 10–15% deposit |
| Materials delivery / work commences | 20–25% |
| Framing/structure complete | 20–25% |
| Enclosed/weathertight | 15–20% |
| Practical completion | 10–15% |
| Final completion / code compliance | 5–10% |
What to watch for: - Front-loading (large deposit before work starts) — a deposit of more than 15–20% before commencement is unusual - No clear link between payment and completion of a stage - No provision for retaining a final payment until code compliance is obtained
8. Timeline
The quote should state: - Proposed start date (or trigger conditions — "subject to council consent being granted") - Estimated completion date - Key milestone dates if a longer project
Timeframes in construction are not guarantees — weather, material availability, consent delays, and site conditions all affect progress. But a professional builder will give realistic estimates and communicate clearly if they change.
9. Variation process
A variation is a change to agreed scope — additional work, a change in materials, or something unexpected. The quote should define: - How variations are authorised (verbal? written? email?) - Who can approve variations (homeowner only, not just partner or family member?) - Whether a quote is required before variation work proceeds - How the variation price is calculated (hourly rate, or negotiated fixed price?)
Best practice: All variations in writing before the work proceeds. "I'll sort it out at the end" creates disputes.
10. Warranty and defects period
The quote or accompanying contract should state: - The builder's workmanship warranty period (typically 12 months for workmanship defects) - What the warranty covers - How defect claims are made and resolved
Under the Consumer Guarantees Act, builders must also meet guarantees regardless of what the contract says — but a clearly stated warranty sets expectations clearly.
What to Do If a Quote is Incomplete
Ask the builder to address the missing elements before you accept. A professional builder will do this willingly — they want a well-defined scope too, since it protects them from scope creep arguments as much as it protects you.
If a builder is resistant to providing detail, or insists the quote is "complete" when it clearly isn't, treat that as a red flag about how the project will be managed.