Extension, Renovation & New Build Costing (Residential)
Welcome to Dunvei Construction Consultants
We help homeowners when they are doing extensions, renovations & new builds
with cost estimates that are required for development applications & also to
keep your construction projects on budget.
We provide cost estimates and can also monitor your construction contracts to
ensure that there are no budget blowouts. With our cost estimates, you will be able
to commence your project and get it delivered on time, saving you thousands
of $$$.
Why choose Dunvei Construction Consultants?
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Client's save $150k on average - Our expert quantity surveying services help Sydney clients save up to $150,000 on average by identifying cost-saving opportunities, avoiding budget blowouts, and ensuring smarter financial planning for construction projects.
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We Provide Accurate services - We deliver precise and reliable quantity surveying in Sydney, including detailed cost estimates, BOQs, and value engineering—so you can make informed decisions and avoid costly surprises down the track.
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Transparent - We maintain complete transparency throughout every stage of your project with a detailed breakdown of individual line items. From initial consultations to final reports, you'll always know where your money is going and why.
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Registered and licensed (RICS & AIQS) - A minimum requirement for all financers. Work with a team of licensed and fully registered quantity surveyors in Sydney, committed to upholding Australian standards and providing dependable, professional service.
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Friendly & Fully Committed Team - We’re a client-first team—approachable, reliable, and passionate about your project. From start to finish, we’re here to support your success and bring your vision to life.
Who do we help?
Homeowners and developers who are doing:
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Renovations
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Extensions
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New builds
Why engage a Professional Quantity Surveyor?
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Often a requirement as part of DA Submission or Finance Approval
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Ensuring the project is completed on time and budget.
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Keep the builder honest and accountable.
What solutions do we offer?
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We provide cost estimates from early stage feasibility studies to detailed cost estimates to ensure designs can be delivered within budget.
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We monitor construction contracts to ensure there is no budget blowout.
What are the benefits of working with us?
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Clients save on average $150k vs. self managed projects.
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Projects gets delivered under budget
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Required by Finance lenders / Council Approvals.
Why trust us?
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We provide accurate services with line-by-line breakdowns to understand each individual cost component.
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We offer competitive fees with savings that pay for themselves.
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Clients save on average $150k vs. self managed projects.
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We are transparent, we issue example reports to understand the level of detail provided.
Expertise Backed by Years of Experience
At Dunvei Construction Consultants, our Quantity Surveyors bring years of experience across a wide spectrum of construction projects, equipping them with unparalleled insight into the nuances of cost estimation. Their expertise enables them to deliver precise and reliable estimates tailored to each unique build.
Beyond their experience, our team has access to an extensive database of tools and software that empowers them to generate detailed estimates for projects across Australia. This includes Cordell Estimator, Rawlinsons Cost Handbook, Buildxact, Procore Planswift, CostX and BlueBeam amongst others.
With this combination of knowledge and technology, you can expect swift, accurate estimations that help you move forward with confidence.
Download an Example Residential Cost Estimate
Our History
We have been providing professional quantity surveying services on construction projects for over twenty years. Our construction consultants provide expert advice on building costs of residential and commercial projects, calculators for insurance reinstatement, procurement and tendering.We also offer a freelance quantity surveying service for building contractors and developers to assist in periods of peak demand.
