Building Estimation & Quantity Surveying Services for

Home Owners/ Owner- Builders

Auckland – Wellington





Reports Completed to Date

18+ years

Industry Expertise


Average Cost Savings

Get the Honest Truth on what your Build will Cost

Dear Homeowner/ Owner Builder?

Want to know how much it’ll cost to build?

Don’t want to risk getting “caught out” with an overpriced builder?

Are you planning a new home build or construction and need quantity surveying support?

Hi, I’m Hai Nguyen, founder of Newin Building Estimating Services, and that’s what I’ll help you do – cost and manage your building projects to ultimately ensure your project gets completed to budget and without any cost surprises.

We are a property and construction advisory firm specialising in Construction Cost Estimate Reports, Quantity Surveying, and Cost Management services across Auckland and Wellington. We work with home-owners and owner-builders at various phases: prior to construction, during construction, and post-construction.

Our why?

Over the years we’ve seen clients get caught out with overpriced builders, poor project tracking systems, inaccurate costings, or simply “paying too much”, sadly leaving many financially strained.

We have a proven risk management system and industry track record for addressing all these.

We are very return-on-investment (ROI) driven. And that means we’ll spend the time with you to identify opportunities to save and get the best bang for your dollar.


Servicing Auckland and Wellington

We help homeowners and owner-builders across residential and commercial and at any and every stage of the building cycle:

New Construction Building Cost Estimate Reports
Extension and Renovation Cost Estimate Reports
Independent Building Contract Price Evaluations
Material and Trade Price Cost Evaluations
Finance Reports for Banks & Financial Institutions
Feasibility Studies for Builders & Developers
Cost Planning by Project Phase- Concept, Design, Detailed & Tender

Our expert services safely support you from start to end

  • A fast 3-day turnaround (Additional cost)
  • Compiling a detailed budget analysis prior to construction
  • Compiling an accurate budget breakdown of all trade items
  • Creating a budget based on real-world costs using current market values
  • Creating budgets for any size project – from single room renovations to self-contained dwellings – no job is too big or too small
  • Providing an itemised cost based on each room, trade, or stage of work
  • Making it easy to deal with local authorities or financial institutions by providing all the necessary documentation
  • Summarising and selecting building tenders based on the value
  • Keeping subcontractors and builders honest with expert evaluations of progress claims
  • Keeping the client up-to-date with regular progress reports
  • Cost to complete report
  • Works completed to date report
  • Rectification cost report
  • Variation assessment report
  • Building cost dispute report
  • Building contract review
  • Building dispute report.

How it works?

A budget analysis is just the start of your journey with us, as Newin will be there to support you through to the completion of your project. With our expert guidance, Newin typically saves homeowners 10 – 15% on their construction costs – which could mean an extra $30,000+ in your pocket.

We bring knowledge and experience to your project, so you can see your dream home take shape and become a reality without any hidden surprises or unexpected costs.

Our genuine, trusted service ensures that you enjoy a rewarding building experience.

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Newin is a trusted partner of choice across the Building & Construction industry


We enjoy a great working relationship with Hai at Newin Building Estimating Services. He is always incredibly responsive and never misses a deadline. As a growing building company we rely on professionals that we can trust and we look forward to continuing our working relationship with Hai for many, many years to come
Mark Baddock
Baddock Building
“Fast and professional, they provided high-quality work and were very efficient. Very happy and will use again”
Sydney Road Dental Care, Manly
“I found using Newin Estimating Services helped me win more business. Their professional approach and efficiency enabled me to go for more tenders and increase my strike rate. I would recommend their services to any builder or subcontractor who does not have the time to do estimating themselves”
Frank Tarabay – Managing Director
Every Trade Building Services
“They explained the process clearly and were able to complete the renovation and fit out of our practice well within the budgetary estimates”
BDS – Faculty of Dentistry
The University of Sydney
Ethics and transparency are his biggest strengths”. Knowing Hai for over 5 years, I rely on his services. He has outstanding attention to detail, is punctual, and sticks to deadlines. I support him completely, I refer him to others in the industry and there is no doubt.

Tarn Miller
TCM Building Services

He is very accurate with his building estimations. I find him reliable, hard-working, and extremely likable which is why I continue to engage his services and refer him to others.
Mick Dryver
Billabong Construction & Development
building estimates construction cost estimating services Sydney Melbourne

Our accurate cost estimation services

Newin will create a comprehensive budget that accounts for every cent you invest.

We are versatile and can create detailed breakdowns from simple architectural sketches up to highly detailed council or construction documents.

We are fast too and can have your document ready in as little as three days (Additional cost)

Our complete breakdown will tell you everything you need to know about the cost of every room, every trade, and every dwelling going into the new construction or renovation. You can then use the breakdown in local authority submissions, financial institution negotiations, or issue them to a builder or architect as a complete project budget.

All rates and quantities are included to ensure your peace of mind.

By using our genuine trusted service, you won’t be caught out with any unexpected surprises.

Contact Hai today for a FREE no-obligation discussion about your project.

09 802 0902 

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