The estimate that
wins the tender.
Plumbing & hydraulic estimating — exclusively.
We work exclusively in plumbing and drainage. Not as a side service — as our entire focus. When a head contractor, developer or government agency needs a hydraulic estimate they can build a winning bid around, they call SNZ. Tier 1 contractors, Sydney Water, hospitals, universities and national retailers trust us across six states and territories.
Australia's most trusted
hydraulic estimating
specialists.
Plumbing and drainage — exclusively. No generalists. Ever.
SNZ Plumbing Estimating is a specialist hydraulic estimating firm based in Sydney, with offices in Melbourne and Brisbane. We work exclusively in plumbing and drainage — it is all we do, and we do it at the highest level. With a civil engineering foundation and international experience across Australia, the Middle East and South Asia, SNZ brings a level of technical rigour and commercial precision that generalist estimators simply cannot match.
Our clients include Tier 1 contractors, government agencies, Sydney Water, major developers, builders, architects and hydraulic engineers operating across New South Wales, Queensland, Victoria, Western Australia, South Australia and the Northern Territory. From a 25-storey residential tower in Western Sydney to a hospital hydraulic package to three simultaneous government rail station upgrades in Queensland — SNZ has the depth, speed and precision to handle any hydraulic scope, anywhere in Australia.
With 300+ projects estimated and a perfect 5.0 Google rating across 63+ reviews, SNZ is the firm that head contractors, project directors and procurement managers call when accuracy is non-negotiable. We also offer a subscription estimating model — the only one of its kind in Australian plumbing estimating.
Learn more about SNZ Projects that prove
the standard.
Real projects. Real complexity. Real outcomes. These are the actual jobs SNZ has estimated — at scale, across Australia.
What our clients say
in their own words.
63 five-star Google reviews. Real contractors. Real projects. Real outcomes.
“Worth every penny. SNZ estimated a large commercial hydraulic, civil & fire package in SA on a tight timeline. Within 24 hours they had started on our quote. Their detailed estimate provided everything we needed to fill in the tender documents with ease. Will definitely be using them again in the future.”
“The accuracy and detail were second to none. Everything was broken down and very clear to see pricing for each part of the job. Would certainly not hesitate to recommend SNZ to other contractors who need large jobs quoted accurately and professionally.”
“Highly professional and extremely helpful service. The team at SNZ Plumbing Estimating were responsive, knowledgeable and very easy to deal with throughout the process. Their estimating was clear, accurate and well presented — which made quoting and planning much easier on our end. Would highly recommend to anyone in the plumbing industry looking for reliable and professional estimating support.”
“Shoaib and the team went over and above to deliver in a tight timeframe. Everything was detailed and communication was 10/10. The breakdown provided was very thorough and transparent covering all aspects of the job. Will definitely be using SNZ on future projects.”
“We appointed SNZ recently on a potential project and have had a great experience. They provide upfront pricing, great communication throughout and the end result was a well mapped, high detail estimate. Will use again. Thank you — makes our admin time a lot more streamlined.”
Every review is from a real plumbing contractor or construction professional who trusted SNZ with their tender.
Four steps.
Zero surprises.
A clear, simple process designed around one goal — getting you an estimate you can build a winning tender around.
Upload your drawings, specifications and scope documents. We accept PDF, DWG and Revit formats. We review everything before work begins and ask the right questions upfront — nothing is assumed.
Step 1 of 4Every pipe, fitting, fixture and labour item is individually measured and priced using PlanSwift. Nothing is assumed, nothing is averaged. Every line item is based on your specific drawings — not industry templates.
Step 2 of 4Every estimate is checked by a second estimator before it leaves our office. We verify numbers, scope coverage and format. Accuracy before speed — every time. This is the step most estimating firms skip. We never do.
Step 3 of 4Delivered in your preferred format — Excel BOQ, PDF summary or tender-ready breakdown. We remain available throughout your bid for queries, revisions and RFI support. We don't disappear after delivery.
Step 4 of 4 Ready to start?
Send us your plans today.
Most estimates are back within 72 hours. For large or complex scopes we confirm your turnaround time upfront — no surprises. Have questions first? Read our FAQs or explore our subscription plans for ongoing tender support.
Everything you need
to win the tender.
From a quick variation assessment to a full hydraulic package on a 25-storey tower — SNZ has the service to match your scope.
Full hydraulic estimates for projects of any scale — residential towers, commercial buildings, hospitals, schools and government infrastructure. Every pipe, fitting and fixture individually priced using PlanSwift from your actual drawings.
Learn moreDetailed, itemised BOQs formatted to your specific tender requirements. Clear, structured and ready to submit — broken down by system, floor level or trade package, however your tender documentation demands.
Learn moreWe work alongside your team throughout the entire tender process. RFI responses, scope clarifications, addendum reviews and last-minute estimate revisions — we're available from submission to award.
Learn moreWhen a project is over budget we identify where savings are possible without compromising specification or compliance. Alternative materials, system configurations and scope reductions — priced and compared side by side.
Learn moreFast, accurate pricing for scope changes, design variations and site instructions. Turnaround from 24 hours so your project keeps moving. Includes design change comparisons showing cost impact before and after.
Learn moreEarly-stage budget estimates for developers, architects and hydraulic engineers at concept or DA stage. Order-of-magnitude hydraulic costs to inform project viability and funding decisions before detailed design is complete.
Learn moremodel in Australia.
Lock in a dedicated estimator, priority turnaround and fixed monthly pricing for your ongoing tender programme. No per-job quoting. No surprises. Perfect for plumbing contractors who tender regularly and need reliable estimating support every single month.
Send us your plans and scope and we'll tell you exactly what's required and how long it will take — before you commit to anything.
in the numbers.
300+ projects. Six states. A perfect Google rating. These aren't targets — they're the results of doing the same thing right, every single time.
The contractors and developers
who trust SNZ.
From national retailers to Tier 1 civil contractors to government agencies — the names below have trusted SNZ with their hydraulic estimates.
Client names are listed based on direct and indirect project engagements. SNZ has provided hydraulic estimating services on projects associated with these organisations. All project details available on request.
Send us your plans — we'll have your estimate back before your deadline.
Send us your plans.
We'll do the rest.
Fill in the form and we'll be in touch within a few hours. Most estimates are back within 72 hours. For large or complex scopes we confirm your timeframe upfront.
For urgent enquiries call +61 451 404 645 directly.