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RPG-3N1 Consulting Engineers Sunshine Coast · Brisbane · South East QLD · North QLD Est. 2003

Electrical & Mechanical Engineering.

Building services design supported by real construction knowledge — practical, coordinated and buildable on site.

Est. 2003

Many of our engineers come from electrical contracting and construction backgrounds — so we design systems that contractors can actually install, without losing performance, safety or compliance.

Our engineering consultancy focuses on solutions that support efficient construction delivery. That background gives the team a strong understanding of buildability, coordination and installation requirements across every project we document.

We work closely with contractors, architects and project managers to ensure systems integrate smoothly within the building design and construction process — not just on paper, but on site.

23+Years in practice
02Disciplines in-house
05Senior engineers
QLDSunshine Coast + statewide

Both, in-house

Verification testing on an electrical control panel
Electrical engineering

Designed to meet the network, not fight it

Our electrical engineers deliver comprehensive building services design for commercial, residential and institutional developments — and coordinate directly with Energex and Ergon so projects meet regulatory requirements while maintaining reliability and efficiency.

  • Lighting design
  • Power reticulation
  • Emergency lighting
  • Fire alarm systems
  • Communications
  • Security systems
  • EV charging
  • Generation + UPS
Ceiling cassette air-conditioning unit in a commercial fit-out
Mechanical + HVAC

Comfort, efficiency, and practical installation

Mechanical engineering for complex building environments. We design systems that improve indoor comfort, energy efficiency and building performance — while ensuring installation remains practical for construction teams.

  • HVAC design
  • Ventilation systems
  • Chilled water
  • Condenser water
  • Car park exhaust
  • Smoke control

Project record

Settlers Cove residential development
Noosa Heads — Residential

Settlers Cove

Medical suites fit-out, Maroochydore
Maroochydore — Health

City Centre Private Hospital Suites

M1 Development, Collins Place, Maroochydore
Maroochydore — Residential

Collins Place

Building services control panel
Maroochydore — Commercial

Quadrant Building

Detection systems in a hospitality environment
NT — Tourism

Ayers Rock Resort

Full project index

Our team

Every project benefits from direct oversight by experienced senior engineers with decades of building services expertise.

Darren Ryan

Managing Director
Electrical Design Manager

Robert Graham

Founder
Principal Electrical Engineer

Rick Boyle

Principal Mechanical Engineer

Colin Schedler

Engineering Drafting Manager

Greg Golding

Senior Electrical Consultant

We will reply at our earliest opportunity

Let's talk.