How do I compare two building quotes fairly?
Put both quotes against one scope schedule and drawing revision. Mark each line as included, excluded, allowed for or unresolved, and reconcile quantities and specification before comparing totals. Ask each contractor to identify work by others and assumptions about the site. A cheaper total can reflect less work, different materials or a missing allowance; it does not establish a lower cost to finish the same project.
Link to this answer · 01Does a fixed-price building contract mean the price can never change?
No. Read the applicable contract and its documented change mechanisms. In domestic contracts, variations and specified allowances can affect the price within the legal framework. Our practical check is to identify every unselected item, uncertain scope and owner obligation before signing, then record how a change will be priced and approved. The words fixed price do not resolve an incomplete design or an undefined site condition.
Link to this answer · 02What is the difference between a prime cost item and a provisional sum?
A prime cost item concerns a fixture or fitting whose selection or price is not final. A provisional sum allows for work that cannot yet be priced definitively. For either, ask what quantity and specification the allowance assumes and how the actual cost and any agreed margin will be reconciled. Prioritise selections and investigations that turn the largest allowances into clearly defined items.
Link to this answer · 03What should happen before a design variation is built?
Record the revised scope, drawings, cost, programme effect and required approvals before authorising the work. Check whether other trades, permit documents or future subdivision conditions also change. Follow the notice and agreement rules of the applicable contract; domestic building guidance requires written variation controls subject to its limited exceptions. Keep the accepted version in a single register so a verbal instruction does not become conflicting site information.
Link to this answer · 04Who is actually contracting to deliver the work?
The written proposal and contract should identify the legal contracting party and who is responsible for the building work. Verify the relevant practitioner registration and insurance for that party, scope and building use. A brand, product supplier and registered builder may have different roles. DollarBuild’s coordinated delivery model should be set out in the proposal; a website description is not a substitute for the project-specific contractual allocation.
Link to this answer · 05How do I compare material kit, prefab and local-build pricing?
Compare the completed dwelling and all on-site work, not just the package leaving a factory. Align the specification, foundations, transport, lifting, installation, connections, approvals and handover scope. Record who measures the site and accepts tolerances at each interface. Different methods can move work between suppliers and the site programme; they do not remove the need to coordinate the whole delivered building.
Link to this answer · 06Are owner-supplied materials automatically a saving?
Only after accounting for the whole responsibility. Confirm specification acceptance, ordering, delivery, storage, compatibility, installation and warranty handling, together with what happens if the item arrives late or is wrong. Remove the corresponding supply item from the quote only after the builder confirms the revised scope. The purchase price alone does not capture rework, lost time or gaps between product and installation warranties.
Link to this answer · 07Does the building surveyor check everything promised in my contract?
No. Regulatory inspection and contractual quality checks have different purposes. The surveyor checks the applicable building requirements; that does not establish that every finish, appliance or contracted item has been supplied as agreed. Maintain your own specification and handover checklist, and consider an independent building consultant for contract-quality review. Resolve discrepancies against the signed documents and follow the contract’s completion process.
Link to this answer · 08What belongs in a building handover pack?
Start with the final documents required by the permit and contract. Then organise approved plans, inspection and trade compliance records, operating manuals, warranties, keys, service details and the agreed defects record. Identify outstanding tasks and who owns them. Subdivision title evidence, where relevant, belongs on a separate linked checklist; handing over a completed home does not itself issue a new land title.
Link to this answer · 09Can I use an ordinary home-building checklist unchanged for a rooming house?
No. Confirm the legal framework, practitioner requirements and insurance for the proposed rooming house before relying on ordinary-home protections or payment rules. BPC’s domestic-building guidance distinguishes a home from a rooming house under the Residential Tenancies Act. The useful scope disciplines still apply: complete drawings, clear responsibilities and written changes. Have the project’s contract and insurance reviewed for its actual use instead of copying a standard house arrangement.
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