At MJI Design, we specialise in hydraulic engineering with a focus on clarity, efficiency, and real-world application. Established in 2019, we’ve grown into a trusted design, drafting, and modelling firm committed to delivering value-driven hydraulic solutions.
At MJI Design, we understand the critical role of accurate hydraulic estimation in ensuring efficient, code-compliant plumbing system design for commercial and multi-residential developments. Our hydraulic estimator service is tailored exclusively for B2B professionals, including plumbing contractors, architects, and developers, seeking reliable data for seamless project planning and execution.
Hydraulic estimation is not just about numbers—it's about precision forecasting that aligns with real-world functionality. Our experienced design team uses industry-standard software and drawing tools to provide hydraulic calculations and schematics that integrate effortlessly with your broader building plans. This includes detailed fixture unit assessments, pipe sizing, flow rates, and pressure loss analysis—all customized to the unique demands of each project.
A professional hydraulic estimator plays a critical role in ensuring the design phase is tightly aligned with both project scope and regulatory requirements. At MJI Design, our estimators don’t just calculate pipe sizes or fixture units—they deliver fully coordinated hydraulic system plans that reflect current NCC/BCA codes, site-specific constraints, and integration with other building services.
We work collaboratively with Tier 1 and Tier 2 contractors and consultancies to assess water supply, sewer drainage, stormwater, fire services, and recycled water systems. Our estimators provide early-stage hydraulic costing, design markups, material take-offs, and value engineering options to assist with feasibility assessments and tender success.
We collaborate closely with plumbing contractors and engineers during the design phase to produce documentation that supports smooth approvals, accurate budgeting, and fewer on-site revisions. For architects and developers, our hydraulic estimation services bring clarity early in the design process, helping identify space requirements and service constraints before construction begins.
At MJI Design, we do not provide physical plumbing installation—we focus entirely on design documentation and estimation that aligns with building codes and project specifications. Whether your next project is a high-rise, healthcare facility, or commercial complex, our hydraulic estimator solutions ensure a strong foundation for plumbing infrastructure planning.
Let MJI Design be your partner in delivering smarter, scalable hydraulic systems through precise, technical design services.