A fixed-price commercial build is one where the full cost of the building is confirmed in the contract before construction starts. Advance Build offers fixed-price contracts* on commercial buildings across Northland, Auckland and Waikato.
For a business, trust, or community organisation, a commercial project is rarely signed-off on an estimate. Boards, trustees, committees, lenders, and funders need a solid figure they can evaluate, sign off, and rely on right through the build.
Organisations across New Zealand are planning carefully, putting financial certainty at the very top of their list. Knowing the total investment before a spade enters the ground removes any financial risk and gives everyone a clear path forward.
Alongside our established fixed-price residential offering, Advance Build can deliver fixed-price contracts for commercial projects. By taking care of all the detailed site investigation and design analysis before the contract is signed, the price agreed upon is the exact price paid.
A fixed-price building contract (without any provisional costs) locks in a firm cost for an agreed scope of work before construction gets underway. Under this type of fixed-price contract, the price remains fixed unless the client requests a change.
Understanding the difference between contract types is essential for commercial decision-makers. For commercial projects, relying on an estimate, or including provisional costs introduces a financial risk that may not be acceptable. Boards, lenders, and funding organisations are likely to require the security of a fixed-price building contract. This ensures that approved budgets hold firm from project approval through to completion.
Many building contracts in New Zealand that are labelled ‘fixed-price’ still include provisional sums. A provisional sum is an allowance for work for which the extent is not fully known at the time of signing a contract. This most frequently includes site works including foundations and utility connections. As actual costs are incurred, the contract price is adjusted accordingly, which is usually how budgets start to creep up.
In a commercial context, provisional sums represent risk. If a board or funding body approves a project based on a figure that still contains variable allowances, any variance must be absorbed by the organisation.
Advance Build removes this uncertainty by pricing site reports, structural engineering, and most local council requirements upfront during the Project Starter Pack stage. Before the construction contract is signed. This groundwork ensures the contract covers the complete, agreed scope of the build, and leaves customers with no unexpected financial surprises after a job has started.
| Contract Feature | Standard Fixed Price with Provisional Sums | Advance Build Fixed Price* |
| Confirmed at Contract | Usually contains the building structure and fit-out specifications. | Full project scope, including build, site preparation, foundations, and connections. |
| Variable Allowances | Site works, foundations and service connections remain variable. | Identified, engineered, and fixed upfront prior to signing the contract. |
| Final Budget Known | Only after site works and utility connections are completed. | Fully confirmed before the contract is signed. |

Getting to a place of real budget certainty requires rigorous work upfront. Advance Build locks in a fixed price through their proven process. Prior to any contract being signed, the following steps take place:
This meticulous upfront work is what makes a fixed price possible. We do the deep dive before you sign your contract. Eligibility for a fixed-price contract is confirmed during the Project Starter Pack stage and while no commercial building type is excluded, every project is evaluated on its individual site conditions and scope requirements.
Having a fixed price provides everyone within your organisation the clarity and confidence they need to move projects forward.

By combining cost certainty with a clear completion timeline, organisations get all the benefits of a custom space, without the usual construction headaches.
Advance Build delivers smart, custom factory-built commercial spaces across the upper North Island, including Northland, Auckland and Waikato.
Our commercial build capabilities cover a diverse range of sectors:

When College Rifles required a modern, durable amenity facility, they partnered with Advance Build for an efficient offsite solution. The club gained high-quality, fit-for-purpose clubrooms delivered with minimal disruption to ongoing sports operations and club activities.

“We contracted Advance Build to provide a new Sports Pavilion at our home ground in Remuera. The company was excellent to work with. Efficient, flexible, and on time. The workmanship was of a very high standard.” Derek Rope, General Manager (former)

Our end-to-end commercial building process keeps everything simple, clear, and organised across six distinct stages:

Got more questions? Read our full commercial FAQs for more details.
What is a fixed-price building contract?
A fixed-price building contract is a legally binding agreement that sets the full cost for an agreed scope of work. The contracted figure remains unchanged unless you formally request and agree to a scope variation.
What are provisional sums?
A provisional sum is an estimate that is sometimes included in a contract for work that is not fully priced upfront. These allowances are adjusted once final work is complete. This can introduce budget variations.
What is included in an Advance Build fixed-price commercial contract?
Our fixed-price contracts cover the complete agreed scope of your project, including architectural design, engineering, site works, foundations, offsite factory construction, transportation, onsite installation, service connections, and full compliance management.
Can a fixed price help with finance or funding approval?
Yes. Banks, commercial lenders, funding bodies, and government agencies may require guaranteed figures before releasing capital or approving grants. A fixed-price contract provides the cost certainty required for straightforward financial approval.
How long does a factory-built commercial build take?
The core construction stage in our controlled factory facility takes approximately 8 weeks. Combined with simultaneous site preparation, overall project timelines are significantly shorter than traditional on-site construction methods.
Does Advance Build manage commercial consents?
Yes. We manage the entire consent process end to end. From preparing architectural drawings right through to securing the final Code Compliance Certificate (CCC).
Which regions does Advance Build operate in?
Advance Build designs, delivers, and installs commercial buildings across the upper North Island, covering Northland, Auckland and Waikato.
Planning a commercial building and need a number you can take to your board, trustees or funder? Talk to Advance Build about a complimentary feasibility quote and scheme plan on 0800 448 353.
Disclaimer: Fixed-Price Contract Eligibility
Please note that while Advance Build strives to bring absolute certainty, clarity, and peace of mind to every project, not every build automatically qualifies for a fixed-price contract. Site-specific variables, unique land topographies, access requirements, and custom design scope must first be evaluated.
Eligibility for a fixed-price contract is thoroughly investigated and determined during the Project Starter Pack stage. This upfront research ensures everything is fully assessed before you sign your contract.