Building a new home in Franklin is one of the largest financial commitments most families will make. Before any ground breaks, you will sign a contract that sets the terms for everything: cost, timeline, inclusions, and what happens when things go sideways. Getting that contract right protects your budget and your build.
Get a fixed-price quote from Rag Reno’s before comparing builders, so you can see exactly what is included with no surprises.
What Is a Fixed-Price New Build Contract?
A fixed-price contract locks in the agreed cost of your build before construction begins. Your builder commits to completing the specified work for that price, regardless of fluctuations in labour rates or material costs during the build. You pay what the contract says: nothing more, as long as the scope stays the same.
This is the most common contract type offered by residential new build companies in Franklin and across the Waikato. It gives homeowners a defined budget ceiling from day one, making mortgage planning and financial sign-off significantly more straightforward.
Fixed-price contracts differ fundamentally from cost-plus arrangements, where you pay the builder’s actual costs plus a margin. Under cost-plus, your final bill is only known at the end. Under a fixed price, it is known at the start.
Fixed-Price vs. Cost-Plus: A Direct Comparison
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Fixed price is the standard for most residential builds in the Franklin area. If a builder is pushing cost-plus for a straightforward new build, ask for a clear explanation of why.
The Hidden Traps: PC Sums and Provisional Sums
You cannot understand a fixed-price contract in New Zealand without understanding Prime Cost (PC) Sums and Provisional Sums. These are the two mechanisms that allow costs to blow out even after you have signed a “fixed” price.
- Prime Cost (PC) Sums: This is an allowance for materials where you have not yet made a final selection. For example, the contract might include a PC Sum of $3,000 for tapware. If the tapware you eventually choose costs $4,500, you pay the $1,500 difference as a variation.
- Provisional Sums: This is an allowance for work whose final scope cannot be accurately priced up front. This is very common for earthworks, where a builder might include a Provisional Sum of $15,000. If hitting solid rock means the earthworks actually cost $25,000, you are liable for the extra $10,000.
A contract loaded with PC and Provisional Sums is not truly fixed. At Rag Reno’s, we believe in minimising these allowances by finalising your selections and doing thorough site investigations before you sign the contract.
What Is Typically Included in a Fixed-Price New Build Contract
A well-written fixed-price contract in New Zealand will specify the agreed-upon inclusions in detail. What you should expect to see covered:
- Site works: earthworks, foundations, and retaining walls within the agreed scope (unexpected ground conditions often require a variation, as explained above).
- Structural framing and roofing: timber or steel frame, roof cladding, and flashings.
- Exterior cladding: specified wall system and finishing.
- Interior linings, insulation, and ceiling: to Building Code minimums or specified upgrade.
- Joinery and glazing: all specified windows and doors.
- Kitchen and bathroom fitout: to the selections made in the design phase.
- Flooring: to the specification sheet.
- Electrical and plumbing fit-out: to consent drawings.
- Painting: two-coat interior paint to the agreed specification.
- Council building consent and processing fees: confirm that this is explicitly stated in your contract.
- Code Compliance Certificate (CCC) application: the builder should carry this through to CCC.
If any of the above is missing from your contract’s inclusion schedule, ask for it in writing before signing.
What Is Typically Excluded (and Where Budget Surprises Happen)
No fixed-price contract covers everything. Understanding the exclusions protects you from post-contract shock. Common exclusions in Franklin new build contracts include:
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Ask your builder for a written list of exclusions before you sign. A reputable builder in Franklin will provide this without hesitation.
The Four Contract Clauses That Matter Most
1. Variations Clause
Variations are changes to the agreed scope that affect cost. Your contract must define what triggers a variation, how it is priced, and when you must approve it in writing before work proceeds. Verbal agreements on variations are difficult to enforce. Insist on written variation orders every time.
2. Price Adjustment Clause
Some fixed-price contracts include a price adjustment provision tied to material cost indices. If your contract has this clause, understand the index used, the review frequency, and the cap (if any). In New Zealand, the Producer Price Index is sometimes referenced. Flag if this clause is present and uncapped.
3. Practical Completion Definition
The contract must define what “practical completion” means and what your obligations are at that point. In New Zealand, practical completion typically means the build is ready for occupation, even if minor defects remain for a defects list. Do not pay final balances before you understand what triggers practical completion. At Rag Reno’s, we conduct our strict 151-point quality check before we ever reach this stage, ensuring you move into a flawless home.
4. Defects Liability Period
New Zealand residential construction requires a minimum 12-month defects liability period under the Building Act 2004. Your contract should state this period and outline the process for reporting and rectifying defects after handover. We back our work with the Rag Reno’s Guarantee alongside the 10-year Master Build Guarantee, giving you total peace of mind long after the keys are handed over.
Why Fixed-Price Matters in the Franklin Market, Specifically
The Franklin District sits at the southern edge of the Auckland metropolitan area. Land releases in Pukekohe, Tuakau, and Pokeno have driven a significant volume of new residential development over the past five years. In this market, a fixed-price contract is not just a convenience: it is a lender requirement.
Most residential construction loans in New Zealand require a fixed-price build contract before funds are drawn. ASB, ANZ, BNZ, and Westpac all require a signed fixed-price agreement as part of their construction lending criteria. Without it, finance approval is unlikely to proceed.
This is one reason why reputable Franklin builders structure their proposals around fixed-price contracts from the initial quote stage. It removes a significant barrier to your finance approval and keeps your build on the timeline your lender expects.
A Franklin Build That Got the Contract Right
When we took on the Kennelly Cres new build, the clients needed absolute certainty on their budget before breaking ground. Their home was priced, contracted, and delivered at the agreed fixed price.
The inclusions schedule covered everything from foundations through to the CCC application, supported by our 151-point quality check to eliminate headaches from defects. The only variations were client-initiated selection upgrades, each of which was approved in writing before proceeding.
What to Ask Your Builder Before Signing
Bring these questions to your pre-contract meeting with any Franklin builder:
- Is the price truly fixed, or does it include a price adjustment clause?
- What are the specific exclusions, in writing?
- How many PC Sums and Provisional Sums are included in this quote?
- How are variations handled, and who approves them?
- Are council consent fees included?
- What is the defects liability period?
- Are you a member of Master Builders NZ or a similar trade association?
- What does practical completion mean under this contract, and when is final payment triggered?
A builder who cannot answer these questions clearly and in writing before signing is a risk worth reconsidering.
FAQs: Fixed-Price New Build Contracts in Franklin, NZ
Can a fixed-price contract change after signing?
Yes, through variations. Any scope change you request (or that is required due to unforeseen site conditions) will generate a variation order with an agreed cost. You must sign off on variations in writing before work proceeds. The original fixed price only holds if the scope does not change.
What happens if building costs go up during my build?
Under a standard fixed-price contract, cost increases are the builder’s risk, not yours. The exception is a price adjustment clause tied to a materials index. Read this section carefully before signing, or ask a solicitor to review it.
Does a fixed-price contract protect me if the builder goes under?
Not directly. If your builder becomes insolvent mid-build, a fixed-price contract alone does not guarantee completion. A Master Build Guarantee or similar construction insurance provides that protection. Confirm what happens to your project if the builder cannot complete before signing.
Are site works always included in Franklin new build contracts?
Not always. Ground preparation costs depend on your site’s actual conditions. Most contracts include an allowance (Provisional Sum) for standard earthworks, but if your site has rock, poor drainage, or requires significant retaining, this may generate a variation. Get a geotechnical assessment completed before finalising your contract.
What is the difference between practical completion and the Code Compliance Certificate?
Practical completion is the builder’s determination that the home is ready to occupy. The Code Compliance Certificate (CCC) is the council’s formal sign-off confirming that the construction complies with the approved consent drawings and the NZ Building Code. Both matter: practical completion triggers handover, and the CCC confirms legal compliance. Your builder should manage both.
Do I need a lawyer to review my new build contract?
It is strongly recommended. A fixed-price new build contract in New Zealand is a legally binding document, typically 20 to 60 pages long. A construction solicitor can identify unfavourable clauses, unclear variation terms, and missing inclusions before you are committed. The cost of a legal review is small relative to the contract value.
Ready to Build in Franklin? Get a Fixed-Price Quote From Rag Reno’s
Don’t leave your build contract to chance. Rag Reno’s provides fixed-price new build contracts in Franklin with a full inclusions schedule, a written variation process, and no surprises at handover.
Schedule your initial consultation today, and let’s map out a realistic path to your new home: on budget, on time.