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Plumbing Contractors

Services built to empower plumbing contractors - Detailed shop drawings drawings, accurate estimating, and detailed manuals.

End-to-end plumbing documentation: Estimates, Shop drawings, As-Builts, Fire Block Plans and O&M manuals - delivered seamlessly.

Estimating

Need quick, reliable estimates? We provide fast, cost-effective hydraulic quoting services for plumbers across Australia. Get in touch to see how we can help.

Shop Drawings

We deliver detailed, compliant, and fully coordinated designs that give your site team confidence to move forward. Our focus is on cost-effective solutions that meet all project specs and codes.

Penetration Drawings

Clear, accurate penetration drawings showing all fire collar locations and cast-in slab pipework — minimising clashes and ensuring smooth coordination on-site.

Fire Block Plans

Compliant Fire Block Plans tailored to your project. We liaise with firefighting authorities to ensure drawings are accurate, approved, and easy to interpret in an emergency.

As-Built Drawings

Accurate As-Built drawings that reflect all on-site plumbing changes for reliable records and future maintenance. Just send us your red-line markups — we’ll handle the rest.

O&M Manuals

Final documentation that captures all on-site plumbing changes, ensuring accurate records for maintenance and compliance. Simply send through your red-line markups — we’ll return clear, compliant As-Built drawings.

From Conception,
To Completion_

MJI Design delivers detailed, compliant, and cost-effective hydraulic shop drawings, penetration drawings, as-built drawings, fire block plans, O&M manuals, and estimating services tailored specifically to plumbing contractors.

Our team is dedicated to delivering efficient, sustainable, and reliable solutions across a wide range of applications and sectors.

What sets us apart is our combination of hands-on, on-site experience and strong engineering knowledge. This combination allows us to tackle real-world challenges while delivering smart, cost-effective solutions that consistently exceed client expectations.

Need compliant drawings or estimates fast?

Industry-leading plumbing design and estimating.

Get in touch

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