Hydraulic plumbing estimating.
Full plumbing and hydraulic estimates, produced from your actual drawings, priced to your actual market, verified before delivery. Not benchmarks. Not averages. Not templates. The estimate your tender can actually be built on.
Plumbing and hydraulics. Exclusively.
SNZ Plumbing Estimating does one thing: hydraulic estimating. Not electricals. Not structure. Not fitout. Every hour we work, every estimate we produce and every system we price is focused on plumbing and drainage. That specialisation is your advantage when your tender comes down to accuracy and credibility.
We estimate cold and hot water services, sanitary drainage, stormwater, gas reticulation, fire services interfaces, trade waste, civil hydraulics and every specialist system in between, from a standard commercial fitout to a 30-storey tower.
Every estimate is produced using PlanSwift digital takeoff from your actual drawings. Not a rate per apartment, not an industry benchmark, not a template from a previous job. Your drawings. Your project. Your numbers.
Five steps from drawings to a bid-ready number.
Send us your drawings
PDF, DWG or Revit. Architectural and hydraulic drawings, plus any specification you have.
any sector
We confirm timeline and fee
We come back within a few hours with a fee quote and a turnaround time, before any work begins.
few hours
Full PlanSwift takeoff
Every pipe, fitting, fixture and labour item individually measured from your specific drawings.
not estimated
Independent review
A second estimator checks the package before it leaves. This is the step most firms skip.
before it ships
Delivery, on time
Excel BOQ, PDF summary or a tender-ready breakdown, set out the way your submission requires.
not ours
Every system. Every line item.
A complete SNZ hydraulic estimate covers every plumbing and drainage system in your project. Nothing missed, nothing assumed.
Tier 1 contractors to boutique developers.
SNZ works with every type of client who needs a hydraulic estimate, from a national Tier 1 contractor tendering a government rail programme to a boutique developer pricing a 5-storey apartment building.
Our clients include Tier 1 civil contractors, government agencies, hospital developers, national retailers, residential developers, architects, hydraulic engineers and plumbing contractors across all seven states and territories.
What makes the number hold up.
Measured from actual drawings.
PlanSwift digital takeoff from your specific drawings. No rate per apartment, no industry benchmark, no template from a previous job.
Timeline confirmed upfront.
We come back within a few hours with a fee and a turnaround time, so there are no surprises on either side.
Second estimator review.
Every estimate is independently checked before delivery. We will not skip it, even under deadline pressure.
Civil engineering foundation.
Our background is civil engineering, so we understand how hydraulic systems interact with structure, civil works and site constraints, not just the pipes in isolation.
Changed scope mid-project?
Already on site and a design change has created additional scope? SNZ prices variations from the revised drawings against the original scope: fast, detailed and defensible.
When the hydraulic design changes mid-project, SNZ compares the two drawing sets and produces a clear, priced design change comparison of exactly what changed and exactly what it costs.
Looking for a straightforward price on a job? See our plumbing cost estimator service for what a full itemised estimate includes.
What contractors say.
Verified Google reviews. 5.0 from 69 reviews.
We’ve been incredibly impressed with the responsiveness and professionalism of SNZ. Quick to respond, thorough in their work, and consistently reliable. Their attention to detail has made a real difference to our workflow. We see them as a valuable long-term partner.
Worth every penny. SNZ estimated a large commercial hydraulic, civil and 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.
Shoaib and the team went over and above to deliver in a tight timeframe. Everything was detailed and communication was 10/10. The breakdown was very thorough and transparent covering all aspects of the job. Will definitely be using SNZ on future projects.
Common questions.
What does a full hydraulic estimate include?
Every plumbing and drainage system in the project: cold and hot water, sanitary drainage, stormwater, gas reticulation, fire services interfaces, trade waste, civil hydraulics and any specialist systems, each measured and priced line by line.
What drawings do you need to start?
Architectural and hydraulic drawings in PDF, DWG or Revit, plus any specification you have. We review everything and raise questions before pricing begins.
How long does a hydraulic estimate take?
We come back within a few hours with a fee quote and timeline. Small to medium projects are back within 72 hours, and large or complex scopes have the timeline confirmed upfront.
Do you use benchmark or per-square-metre rates?
No. Every estimate is produced using PlanSwift digital takeoff from your actual drawings, not a rate per apartment, an industry benchmark or a template from a previous job.
Is every estimate checked before delivery?
Yes. A second estimator independently reviews every package before it reaches you, and we do not skip that step under deadline pressure.
What format do I get the estimate in?
Excel BOQ, PDF summary or a tender-ready breakdown, set out the way your submission requires.
Ready to get your estimate started?
Send us your drawings and we will come back within a few hours with a fee quote and timeline. Small to medium projects within 72 hours, large and complex scopes confirmed upfront.
Request an estimate