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Plumbing Design & Estimating

Trusted by contractors nationwide, we provide high-quality plumbing design and estimating solutions that streamline construction, reduce errors, and ensure full compliance from start to finish. With a deep understanding of on-site needs, we deliver practical, coordinated designs that help get the job done right.

Expert Plumbing Design and Estimating for Your Next Project.

We provide comprehensive plumbing design and estimating for plumbing contractors, including fully designed shop drawings, penetration drawings, fire block plans, O&M manuals, and accurate estimating. We also offer comprehensive hydraulic design services to developers and architects. Explore the pages below for a detailed overview of our services and how we can support your project needs.

Plumbing Contractors

MJI Design provides detailed, compliant, and cost-effective hydraulic shop drawings, penetration drawings, as-built drawings, fire block plans, O&M manuals, and estimating services to Plumbers across Australia and New Zealand.

Developers & Architects

We provide expert hydraulic services, from minor refurbishments to complex plumbing and pipework systems. Committed to sustainability and compliance, we deliver efficient, reliable solutions backed by on-site experience and engineering expertise, ensuring high-performance and cost-effective results.

Our company mission is to exceed all expectations

  • We deliver clear, detailed & compliant hydraulic drawings that leave no room for confusion.
  • Open and responsive communication, keeping you in the loop at every stage.
  • We prioritise cost-effective, value-managed designs that save you time and money on-site.
  • Fast and reliable turnaround times, even under tight deadlines.
  • Each project is approached with a tailored solution to meet your unique requirements.
  • We collaborate seamlessly with builders, consultants, and contractors to ensure smooth project execution.

We work with

The values that make us_

Integrity_

We uphold unwavering honesty, transparency, and accountability in every decision and action, reflecting our commitment to ethical business practices and fostering trust with our clients and partners. We believe that doing the right thing every time is essential to building long-term relationships and delivering reliable solutions.

Client Experience_

We are dedicated to exceeding expectations through personalised service, proactive communication, and a commitment to delivering solutions that align with our clients’ needs and aspirations. Every interaction is guided by a genuine focus on making the design process smoother, more efficient, and stress-free for our clients.

Value Creation_

We go above and beyond to understand our client’s unique challenges and goals, crafting tailored solutions that drive lasting value for their projects. By combining industry expertise with a deep understanding of hydraulic and plumbing systems, we help reduce costs, improve efficiency, and support long-term project success.

Plumbers, need fast, accurate estimates?