Quantity Surveying Services Castle Hill, NSW
Achievements:
7,000+
Reports Completed to Date
18+ years
Industry Expertise
10-15%
Average Cost Savings
Our Quantity Surveying Services across Castle Hill NSW
Construction Cost Management and Contract Administration
We serve as the primary link between clients—whether homeowners, builders, or developers—and the design and construction teams. Our services include conducting construction audits, pre-verifying costs before the project begins, and tracking and monitoring expenses throughout the construction process to ensure financial control and efficiency.
Construction Cost Project Claim Assessments and Performance
We provide thorough assessments of progress and variation claims, ensuring project costs remain within the approved budget. Our team monitors budgets, completed works, ongoing construction costs, and potential defects when necessary. Through our construction project management services, we also conduct on-site evaluations of builder progress claims, offering accurate cost assessments and financial oversight.
Registered Quantity Surveyor’s Cost Report
A Quantity Surveyor’s Cost Report may be required by your local council for Development Application (DA)-approved renovations, constructions, or developments. Our expert team provides accurate and compliant cost reports to meet council requirements, ensuring a smooth approval process for your project.
Independent Bank Reports and Assessments
We specialise in preparing comprehensive bank reports, including Initial Reports, Drawdown Valuation Reports, and progress claims. Our expertise extends to valuing completed and in-progress works, ensuring compliance with banking requirements. With experience working alongside leading banks, Newin understands the intricacies of financial reporting for construction projects.
Construction Cost Plans and Estimations
We provide accurate cost assessments for materials and labour based on your project’s design and specifications. From high-level feasibility cost analyses to detailed design costings, our pre- and post-tender cost plans offer independent budget evaluations, helping you identify risks and potential savings while ensuring financial feasibility.
Find out more about our Sydney NSW construction cost estimate services here.
About

Quantity Surveying that offers NO Surprises
Hi, I’m Hai Nguyen, founder of Newin Building Estimating Services.
My goal is simple: to help you cost and manage your building projects effectively, ensuring they stay within budget and free from unexpected cost surprises.
At Newin, we are a trusted property and construction advisory firm, specialising in Quantity Surveying and Cost Management services. We work with homeowners, builders, architects, and developers across residential, commercial, and industrial projects—providing expert support before, during, and after construction.
Why we do what we do
Too often, we’ve seen clients struggle with inaccurate costings, poor project tracking, or overpaying, leading to unnecessary financial strain. That’s why we’ve developed a proven risk management system to ensure cost accuracy, transparency, and financial control throughout your project.
The result? Greater confidence that your project will be delivered on time and within budget.
With offices in Sydney, Melbourne, and Auckland, New Zealand, and backed by 18+ years of industry experience and over 7,000 reports, we’re here to help—whether it’s a renovation, new home build, commercial project, or high-rise development.
Let’s discuss how we can support your next build.
Estimate Samples

Click here to view a sample cost estimate.
Estimate Samples
Overview
Newin can will you at all or any stage of a project- residential, commercial or industrial. Our reports are tailored to suit the specific needs of your project type.
Our Cost Estimates are:
- Tailored to suit the specific needs of your project type
- Always accurate and thorough
- Easy to understand, with detailed breakdowns provided
- Delivered on time and to your requirements
- Quick turn around, with optional 72hr turn around available.

I’m Building! Do I need a Section 94 Council report?
If you’re planning a new development project exceeding $500,000, a Section 94 Quantity Surveyor Report is likely required. This report is mandatory for a Section 94A form and cost estimate, which must be prepared by a registered Quantity Surveyor before being submitted with your Development Application to your local Sydney council.
At Newin, our chartered and AIQS-registered Quantity Surveyors provide accurate and compliant Section 94 Reports, ensuring your application meets council requirements efficiently and without delays.
A Quantity Surveyor Report and Section 94 Council Reports can be undertaken by chartered surveyors and those quantity surveyors registered with the Australian Institute of Quantity Surveyors.
Our full range of Castle Hill NSW services
We help builders, architects, developers, & homeowners across residential and commercial with:
Feasibility Studies for Builders & Developers
Building Progress Claim Reports & Variation Assessments
Newin is a trusted partner of choice across the Building & Construction industry







What Our Clients and Industry Partners are Saying

Hai from Newin has prepared a number of estimates for us. His understanding of the detail in our projects and the current trade rates is very accurate. We will continue to work with Hai and have no hesitation in recommending him.
Hai has been a joy to work with over the last year. I strongly recommend Newin for all estimating services.
Unreal service, goes above and beyond and never had any issues, highly recommend
See more reviews
Top 4 reasons to engage a reputable quantity surveyor in Castle Hill and South West Sydney
1. Precise Cost Estimation – A Quantity Surveyor ensures accurate project cost estimates, covering materials, labour, and other expenses. This helps clients set a realistic budget, preventing cost overruns and project delays.
2. Cost Optimisation – By identifying cost-saving opportunities, a Quantity Surveyor suggests alternative materials and construction methods that reduce expenses without compromising quality.
3. Contract Management – Quantity Surveyors assist in managing contracts with architects, contractors, and suppliers. They review contract terms, ensure fair pricing, and help negotiate favourable conditions when necessary.
4. Dispute Resolution – If cost disagreements or contract issues arise, a Quantity Surveyor provides expert guidance to help resolve disputes efficiently and fairly, minimising project disruptions.
We Help
Architects & Designers
Ensure your proposed designs stay within clients budgets
Builders
Win more projects and stay up to date with market rates
Home Owners
Don’t get caught out with overpriced builders
Developers
We partner to help you profit
Cost Estimation Outsourcing
Solutions for builders, developers and architect to outsource the cost estimation side of their operations to save time, money & risk
Latest tips from Newin

How to Save Money on Your Home Construction
A construction cost estimation report is a detailed service that calculates the cost of materials and labour and everything else you’ll need to build your home, from building materials like bricks and timber to labour costs for your general contractor and subcontractors.
The estimation will also include items like fixtures, fittings, and appliances, down to the last nail and tile. Accurate estimates can make or break your budget, so an accurate one will help you save a lot of money or identify other ways to save on materials and labour. Your building cost estimator will use their experience, current cost data and industry connections to develop this.

Sydney Building Contracts Consideration and Tips
Selecting the right builder for your home build or construction project in Sydney is one of the most critical decisions you’ll make. A poorly chosen builder can lead to project delays, cost blowouts, and significant stress.
However, a well-chosen builder backed by a solid contract can protect your interests and ensure a smooth construction process.
Here are some key considerations when picking a Sydney home builder and ensuring proper contract administration.

Home Building Tips Sydney- 6 Ways to Play it Safe
The first step in avoiding the risks of home building or completing renovations is to understand what they are. One of the most critical risks involves the health and safety of all the trades and tradies engaged with the project.
Make sure you have a detailed list of all the contracts needed to complete the project, and the key contacts, and know how to organise them all, so everyone turns up at the right time to do what needs to be done.
Having electricians, plumbers, painters, and builders turn up too early or too late can be costly to the project, but early planning will help you streamline the project.
REQUEST A CALLBACK TODAY!
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