About Us
Thirty years
building
clarity
from
complexity.
Senior-level MEP engineering advice for property professionals who need answers—not ambiguity.
Get a QuoteLes Murphy
CEng Chartered Energy Engineer,
MBA, MSc BSc(Hons) BA.
Our Approach
At the feasibility stage, you don't need tender drawings. You need decision-grade answers.
What Will This Cost?
Not a hand-wave that unravels at tender. Real ranges grounded in current market rates and comparable projects — suitable for board and bank discussions.
What Are the Risks?
Hidden services. Aging plant. Undersized mains. Single points of failure. The issues that derail programmes and blow budgets — flagged before you commit.
Will It Comply?
Part L pathway. Fire strategy constraints. Accessibility requirements. BER trajectory from B3 to A2. What's required, what it impacts, and what it will take.
"I've watched clients pay for feasibility drawings they didn't need — when a two-page memo would have answered the real question."
Why Legacy Business Engineers?
After 30 years in MEP and building services consultancy, I've supported major healthcare and higher-education projects across Ireland. But I keep seeing the same issue: clients paying for full design teams when they only need a senior engineer to answer the key questions.
Not every project needs a 10-person team. Sometimes you need the right answer from someone who's seen it before. That's Legacy Business Engineers.
Clear answers. Fewer surprises. Better decisions.
Chartered Engineer
Energy Institute (CEng MEI)
MBA
Dublin City University
Cambridge Institute for Sustainability Leadership
Net Zero Emissions
Data Centre Design
Certified Professional
Why Work With Legacy Business Engineers
Four principles that define how we deliver MEP consultancy services.
Senior Expertise
The engineer who scopes the work does the work. 30 years of MEP experience, directly on your project — not delegated to juniors.
Fixed Fee Pricing
Price agreed before we start. No hourly creep. No surprise invoices. Budget certainty from day one on every project.
Fast Turnaround
Most reports delivered in 3–7 days. Your deal has a timeline — you need engineering answers now, not next month.
Commercial Focus
We understand deals, not just ductwork. Technical advice shaped by investment reality and exit strategy.
Who We Work With
Developers
MEP feasibility and costs
Investors
Pre-acquisition DD
Architects
Planning & Stage 1-2
Asset Managers
Performance Audits
Occupiers
Energy Cost Reduction
MEP Engineering Services for Property Professionals
Fast, focused MEP consultancy — from deal stage to operation
Most MEP consultancies want the full design job. We're different.
We specialise in the critical decision points — the moments when you need engineering answers fast, but aren't ready for a full design team. Should you buy this building? What will the MEP cost? Will it pass Part L? Is the BER stopping a sale?
Seven focused services. Clear deliverables. Fixed fees. No scope creep.
Whether you're acquiring, developing, upgrading, or scaling — we give you the technical intelligence to move with confidence.
MEP Service Categories
Pre-Acquisition Due Diligence
MEP due diligence before you commit. Know the mechanical, electrical and plumbing risks, compliance gaps, and CapEx liabilities — in days, not weeks.
Deal Viability Memo →Development & Feasibility
MEP feasibility studies for planning and investment decisions. Load calculations, system options, Part L compliance, and budget costs — ready when you need them.
View Development Services →Existing Building Upgrades
Building performance improvement and compliance upgrades. From BER ratings to MEES deadlines — clear roadmaps with costs and grants mapped.
View Building Services →MEP Quick Toolkit
Browser-based calculators for electrical loads, cable sizing, heating, ventilation and more. Quick estimates when you need them — no login required.
Try the Tools →