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In-house MEP engineering for commercial and residential projects — licensed to practice in all 50 states. Our mechanical, electrical, and plumbing engineers work as a single coordinated team, not three separate consultants. Title 24 energy compliance is included as part of every California project scope.
MEP engineering covers the three building systems that occupants experience every day — the heating and cooling that controls comfort, the electrical infrastructure that powers everything, and the plumbing that delivers water and removes waste. When these systems are designed well, they are invisible. When they are designed poorly, they generate complaints, code violations, and expensive corrections.
At YA Creative Design Partners, our MEP engineers are in-house and work alongside our structural and civil teams from the start of every project. Equipment penetrations are coordinated with structural framing before drawings go to the building department. Rooftop unit placement is confirmed against the structural roof system. Utility locations align with civil design. This internal coordination prevents the conflicts that typically surface during construction when separate consultants are involved.
Our MEP practice serves commercial and residential clients throughout California and nationwide — we are licensed to practice in all 50 states. Every California project includes Title 24 Part 6 energy compliance as part of the standard MEP scope — not as a separate add-on engagement.
Tell us your project type, square footage, and jurisdiction. We will assess the full MEP scope and respond within 24 hours.
Each discipline is handled by our own engineers — not subcontracted out. Select a discipline below to see what is included in our scope.
We design heating, cooling, and ventilation systems tailored to the specific requirements of your building and its occupants — from small residential projects to large multi-story commercial developments. Every mechanical design is sized for the actual building loads, not generic rules of thumb.
We design the full electrical infrastructure for your building — from the service entrance through distribution, branch circuits, lighting, and specialty systems. Our electrical engineers design to the California Electrical Code and ensure every system is sized correctly and laid out for efficient construction.
We design complete plumbing systems for commercial and residential buildings — domestic water supply, sanitary drainage, storm drainage, and gas systems. Our plumbing designs are sized to the actual fixture count and occupancy load of the building, and coordinated with the architectural layout and MEP systems from the start.
California Title 24 Part 6 energy compliance is a mandatory requirement for every permitted building project in the state. We include it as a standard part of our California MEP scope — not as a separate engagement. Our energy compliance work is coordinated with the mechanical design from the first equipment selection, not calculated after the fact and then retrofitted onto a system that was not designed with it in mind.
From single-family residential to large commercial developments — our MEP team is experienced across all project types, in California and nationwide.
HVAC zoning, electrical distribution, plumbing, and Title 24 nonresidential compliance for office buildings, retail centers, and mixed-use developments of all sizes.
Commercial kitchen ventilation, hood exhaust and makeup air systems, grease duct design, gas systems, grease interceptors, and health department coordination for restaurant and food service facilities.
Fan coil systems, VRF zoning, electrical distribution, plumbing, and full energy compliance for multi-story hotel and resort developments — coordinated with structural and architectural from the start.
Industrial HVAC, high-bay lighting, electrical service and distribution, compressed air coordination, and process plumbing for warehouse, manufacturing, and industrial facilities.
Full MEP packages for single-family homes, ADUs, apartments, and condominiums — including California Title 24 residential energy compliance and all-electric building design.
MEP redesign for commercial tenant improvements — from small retail suites to large office buildouts. We coordinate with base building systems and deliver a complete MEP package for building department submittal.
Our MEP drawings are produced to the current adopted California codes — so your submittal moves through the building department without unnecessary correction notices.
2025 California Mechanical Code (CMC) — Effective Jan 1, 2026
2025 California Electrical Code — Based on NEC 2023
2025 California Plumbing Code (CPC) — Effective Jan 1, 2026
2025 Title 24 Part 6 Energy Code — Effective Jan 1, 2026
2025 Title 24 Part 6 — Residential Standards
ASHRAE 62.1 — Ventilation for Acceptable IAQ
Our MEP engineers sit alongside structural and civil on every project. Equipment penetrations, rooftop unit placements, and utility connections are resolved internally — before the drawing set reaches the building department, not after the first correction notice.
California energy compliance is built into our mechanical design from the first equipment selection — not calculated at the end and retrofitted onto a system that was not designed with it in mind. This produces cleaner compliance and fewer conflicts at submittal.
Our MEP engineers are licensed to practice nationwide. We are experienced designing to different state energy codes, mechanical code standards, and electrical requirements — so out-of-state projects receive the same level of precision and code compliance as our California work.
Because our MEP engineers work alongside structural and civil colleagues, they understand how a building comes together as a whole — not just the mechanical, electrical, and plumbing systems in isolation. That broader context produces more coordinated, more buildable MEP designs.
Structural design coordinated directly with MEP — equipment pads, penetrations, and roof loading confirmed before drawings are finalized.
Site utility design coordinated with MEP point-of-connection requirements — water, sewer, and gas service sized consistently across both sets.
MEP system condition evaluations for existing buildings — useful before renovation or acquisition to understand the current state of building systems.
Yes. Our MEP engineers are licensed to practice in all 50 states. We are experienced designing to different state energy codes, mechanical standards, and electrical requirements across the country. Our structural and civil services are California-focused, but MEP is available for projects anywhere in the United States.
Yes. California Title 24 Part 6 energy compliance is included in our standard MEP scope for all California projects. It is coordinated with the mechanical design from the start — not added at the end. We prepare all compliance forms and the energy package required for building department submittal.
Yes. Restaurant MEP requires specific expertise — commercial kitchen hood exhaust and makeup air systems, grease duct design, gas systems, grease interceptors, and health department coordination. We are experienced with the unique MEP requirements of restaurant and food service projects and have delivered complete MEP packages for these project types throughout California.
Yes. We can engage for a single discipline — mechanical only, electrical only, or plumbing only — and coordinate with whatever other consultants your project team has in place. Many of our clients bring us in to handle one discipline that their existing team does not cover. Either way, you receive the same level of precision and responsiveness.
Because structural and civil are in-house at YA, MEP coordination happens internally on our end. Equipment penetrations are reviewed against structural framing, rooftop unit placements are confirmed against the structural roof system, and utility locations are aligned with civil design — all before the drawing set goes to the building department. When working with an external architect, we coordinate directly with their team throughout the process.
Tell us the project type, square footage, and jurisdiction. We will assess the MEP scope and respond with a coordinated proposal within 24 hours.
Based in Irvine, CA · MEP Licensed in All 50 States · Commercial & Residential

Structural · MEP · Civil Engineering