Quantity Surveyors Wellington




Reports Completed to Date

18+ years

Industry Expertise


Average Cost Savings

Our Wellington Quantity Surveying services

We help builders, architects, developers, & homeowners across residential and commercial with:

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
Hai Nguyen building estimator sydney

Quantity Surveying that offers NO Surprises

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 it gets completed to budget and without any cost surprises.

We are a property and construction advisory firm specialising in Quantity Surveying and Construction Cost Estimation services across Wellington and Auckland. We work with domestic, commercial, and industrial builders, home-owners, architects, and developers at various phases: prior to construction, during construction, and post-construction.

Our why?

Over the years we’ve seen clients get caught out with 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.

The result- greater confidence that your project will be delivered on time and within budget.

Powered by 18 years+ of industry expertise, over 7000 reports behind us, we’d love to help with your building project whether it’s a renovation, new home build, commercial or even a high-rise residential project.


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

The importance of project cost planning in Wellington

Failure to accurately plan the costing of your Wellington construction can affect everybody involved with the project. You or your client can be left with an unfinished project and no budget to finish it, and architects and contractors may be out of pocket for work which they have already completed.

In a lot of cases, a failed project can further impact finances via long drawn out legal action.

The importance of project cost planning goes beyond ensuring the best chance of finalising the construction, as actual costs can also help ensure you get the best ROI for every dollar invested.

Save at least 10% on your building cost

In most Wellington building costing jobs completed by Newin, we’ve been able to save clients from 10% to 15% because of our unique process which highlights opportunities for savings which may otherwise slip by unnoticed.

With most projects reaching into the hundreds of thousands of dollars, it’s not hard to see that these sorts of savings can potentially reduce the cost of your project by tens of thousands of dollars.

We Help

Architects & Designers

Ensure your proposed designs stay within clients budgets


Win more projects and stay up to date with market rates

Home Owners

Don’t get caught out with overpriced builders


We partner to help you profit

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

Call Hai for a Free No-Obligation Consultation or Request a Call Back

09 802 0902 


Request a callback today!

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