About Us

About — Legacy Business Engineers
30
12.4m 8.6m AHU-01 FCU-04 PUMP-02 CHILLER DB-L1
About Legacy Business Engineers

Thirty years
in MEP and
building services
consultancy.

We focus on a specific stage in property projects: early-stage MEP questions that arise before full design team appointments.

The questions property professionals ask at acquisition, feasibility, or portfolio level — when you need engineering input to make commercial decisions, but aren't ready for detailed design yet.

That's where we work.

30+
Years Experience
3–7 days
Typical Turnaround
€150M+
Projects Delivered

Les Murphy 

CEng Chartered Energy Engineer,

MBA, MSc BSc(Hons) BA.

Our Approach

At the stage between "we're exploring this property" and "we've appointed design teams," specific MEP questions arise.

Capital Cost Ranges

Feasibility-grade estimates (±15–20% accuracy) based on SCSI Q1 2025 benchmarks and project-specific analysis. Suitable for board discussions, bank submissions, or reserve setting.

Risk Identification

System condition screening, compliance gaps, utility capacity checks. The MEP factors that affect acquisition pricing, planning timelines, or refurbishment scope.

Compliance Pathways

Part L routes, BER trajectories, fire system requirements, accessibility standards. What's required, what it affects, what it enables.

"Property professionals often have MEP questions at early stages — acquisition, feasibility, portfolio review — when full design appointments are premature. That's the gap we fill."

Why We Exist

After 30 years in MEP consultancy across healthcare, education, commercial, and mission-critical projects, I noticed a recurring pattern: MEP questions that need engineering input, but at a different scope and timing than full RIBA-stage design.

Senior chartered engineer analysis, at the stage when you're still exploring options. Our output becomes the brief for your design team once you're ready for that stage.

Clear scope. Published pricing. Stage-appropriate depth.

Chartered Engineer

Energy Institute (CEng MEI)

MBA

Dublin City University

Cambridge Institute for Sustainability Leadership

Net Zero Emissions

Data Centre Design

Certified Professional

How We Work

Four principles that define how we deliver early-stage MEP consultancy.

Senior-Level Input

The chartered engineer who scopes your project prepares the analysis. Direct access throughout. 30 years MEP experience applied to your questions.

Published Pricing

Price agreed before work starts. Fixed scope, fixed fee. Budget certainty from first conversation.

Defined Turnaround

Clear delivery timelines matched to your decision schedule. Typical: 3–7 days from information receipt.

Stage-Appropriate Scope

Analysis detailed enough for commercial decisions, positioned before full design appointments. Output becomes the brief for your design team.

SELECTED PROJECT EXPERIENCE
Beacon Hospital // Dublin Port // UCD O'Brien Centre // UCC Kane Building // Systems Biology Ireland // Data Centres // Pharmaceutical Labs // Commercial Offices // Hotels // Nursing Homes // Student Accommodation // Residential // Mixed Use Development // Infrastructure // Laboratories // Mission Critical // Manufacturing // Retail // Healthcare // Higher Education //Beacon Hospital // Dublin Port // UCD O'Brien Centre // UCC Kane Building // Systems Biology Ireland // Data Centres // Pharmaceutical Labs // Commercial Offices // Hotels // Nursing Homes // Student Accommodation // Residential // Mixed Use Development // Infrastructure // Laboratories // Mission Critical // Manufacturing // Retail // Healthcare // Higher Education //

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

Our Services

Engineering input at the stage before full design appointments

We work at a specific stage in property projects: when MEP questions arise, but you're not yet at the point of appointing full design teams.

Typical scenarios: investment committee asks about MEP capex exposure, board wants feasibility direction before committing to design fees, or you need a strategic view across multiple buildings.

We provide engineering analysis at this scope — detailed enough for decision-making, earlier in the timeline than full design appointments. Our AIMEP platform covers 100+ workflows to Irish standards (IS 10101, CIBSE, SEAI). The chartered engineer reviews outputs, applies project-specific judgment, and produces your deliverable.

Published pricing. Clear turnaround. Audit-ready outputs.

MEP Service Categories

Pre-Acquisition

MEP input at acquisition stage — ESB capacity, system condition, compliance gaps, and capex scenarios. For investment committees and board papers.

Deal Viability Memo →

Feasibility & Development

MEP strategy at feasibility stage — load calculations, system options, Part L compliance, and budget estimates. Output becomes the brief for your design team.

View Feasibility Services →

Performance & Upgrades

Portfolio-level MEP assessment — CRREM screening, retrofit cost bands, BER pathways, and EU Taxonomy alignment. Strategic view across one or multiple buildings.

View Audit Services →
Free Tools

Free MEP Tools

35 browser-based screening tools for property professionals. Risk, budget, compliance, and carbon checks — no login required.

Explore Free Tools →