Design for Operations (Design for FM): How to Reduce OPEX from Day One

Why “Design for FM” Has Become a Competitive Advantage in Iran

Many projects focus on construction schedules and physical handover—but the real challenge starts after opening:

The plant room has poor access,
Equipment is not tagged/coded,
O&M instructions and as-built drawings are incomplete,
Energy monitoring and BMS points are insufficient,

And the result? High operating costs (OPEX), recurring failures, safety risks, and operator/user dissatisfaction.

“Design for Operations” (Design for FM) means that from the very beginning—during feasibility and design—we define and select the asset in a way that makes it cheaper to run, safer, easier to maintain, and easier to monitor throughout its life.

This approach is fully aligned with the definition of FM: IFMA (adopting the ISO definition) describes FM as an organizational function that integrates people, place, and process within the built environment to improve quality of life and the productivity of the core business.

What Does Design for FM Mean? (An Operational Definition, Not a Slogan)

Design for FM is a working method where the project team does not see the output merely as a “constructed building/facility.” Instead, they treat it as an operational service that must be:

Operable,
Maintainable,
Monitorable, and
Delivered with a data-driven handover.

Simply put:

Design for FM means validating design decisions against OPEX, operational risk, and performance—before it’s too late.

The Six Core Design Levers for Reducing OPEX

In practice, reducing OPEX through design typically revolves around six pillars:

1) Life Cycle Cost (LCC) Decisions Instead of Lowest Purchase Price

International Organization for Standardization (ISO) provides requirements and guidance for life cycle cost analysis (LCC) in buildings and constructed assets in ISO 15686-5.

RICS also explains that LCC covers costs of construction / maintenance / operation / disposal, and differs from WLC (Whole Life Cost), which additionally includes user, financial, and external costs.

Practical translation for your project:
For high-cost and high-risk systems (HVAC, generator, UPS, chiller, boiler, elevators, fire protection systems, BMS), you should perform at least one LCC comparison for key options.

Even National Institute of Standards and Technology (NIST) notes (when introducing the BLCC tool) that LCC is commonly used to compare options with higher initial cost but lower operating cost over the project life—especially useful for energy and water projects.

Quick LCC Checklist (for building/industrial projects)

Analysis horizon (e.g., 10, 15, or 20 years)
Energy/water cost + price escalation scenarios
Service and spare parts costs (O&M)
Failure / downtime cost
Mid-life renewal/replacement costs
Disposal/decommissioning cost + environmental requirements
Risk & uncertainty (scenario planning)

2) Closing the Performance Gap with Soft Landings and Real Commissioning

BSRIA explains that Soft Landings helps reduce the gap between design intent and operational outcomes (the performance gap).

This is exactly where OPEX rises: a building that looks efficient on paper becomes energy-hungry in practice; or a system that should be stable becomes sensitive and failure-prone.

Why commissioning is critical

A widely used definition (often attributed to ASHRAE Guideline 0) describes commissioning as a quality-focused process for achieving, verifying, and documenting that systems perform according to defined objectives and criteria. ASHRAE also notes that Guideline 0 provides best practices for whole-building commissioning.

Iran market note:
If commissioning and operator training are not taken seriously, operations enter a “trial-and-error” phase—and trial-and-error equals OPEX.

3) Designing for Maintainability and Safe Access (Maintainability & Safe Access)

Many costs don’t come from equipment selection—they come from layout, access, and serviceability. Common examples:

Small plant rooms → replacing a part requires dismantling multiple units
Unsafe access routes → higher HSE cost and more shutdowns
No service clearance → longer repairs, higher MTTR (Mean Time To Repair)

Maintainability design checklist

Safe access to filters, belts, bearings, panels, valves
Heavy part handling routes (corridors, door openings, overhead/portable lifting points)
Isolation points for servicing without wide shutdowns
Standardization of models/consumables to reduce warehouse variety
Ability to perform preventive maintenance without stopping critical service (redundancy/bypass)

4) Designing for Energy Performance and Monitorability (Metering + BMS + Data)

If you can’t measure it, you can’t manage it.
Reducing energy OPEX without proper monitoring usually becomes guesswork.

Minimum requirements for monitorable design

Energy/water meters at main points and key subsystems
Sufficient BMS points (temperature, pressure, flow, equipment status, alarms)
Data logging and reportable archives
Defining energy KPIs (EnPI) and a baseline from day one of operations

5) Data-Driven Handover: From BIM to CMMS/CAFM

BSI Group explains that ISO 19650 is an international standard that helps manage information securely across the entire life cycle of a built asset using BIM.

So it’s not just about a “3D model”—it’s about operationally usable information.

Best practice: make information deliverables contractual

Instead of chasing documents at the end of the project, define them from day one in tender/contract documents:

Asset hierarchy
Asset register with minimum required fields
Equipment tagging and coding
O&M manuals and recommended PM instructions
Critical spare parts list and initial stock levels
As-built drawings and searchable files
Warranties and service conditions

6) Alignment with an FM Management System (ISO 41001)

ISO 41001 sets requirements for an FM management system when an organization needs to demonstrate effective and efficient delivery of FM, aligned with the objectives of the demand organization.

ISO has also published an amendment titled “Climate action changes” for ISO 41001—showing that climate/sustainability considerations are becoming more prominent in management standards.

Practical translation:
Design for FM should produce outputs that can later be managed within an FM system: service scope, SLA/KPIs, risks, energy, asset data, and O&M processes.

A Practical 5-Phase Design for FM Process (Applicable to EPC/EPCM Projects)

Phase 1) Feasibility & Business Requirements

Define service level based on asset type (hospital/hotel/office/industrial)
Identify critical assets and service downtime criteria
Establish decision criteria: cost–risk–performance
Define data requirements for handover (from the start)

Output: FM Brief or OPR (Operator/Owner Project Requirements)

Phase 2) Concept Design

Develop system options and run LCC comparisons for key choices
Review maintainability in layouts
Define minimum BMS/metering requirements

Output: Options report + LCC/risk-based selection

Phase 3) Detailed Design

Access & safe maintenance checklist validation
Standardize equipment and consumables
Design isolation points, bypasses, and redundancy for service without shutdown
Define data drops (asset register fields, coding, tagging) aligned with ISO 19650 principles

Output: Construction-ready design package + operations information package

Phase 4) Construction, Installation & Commissioning

Commissioning plan, tests, checklists, and document handover
Operator and maintenance team training
Installation QC from an O&M viewpoint (access, tags, documents)

Output: Performance verification + training + complete documentation

Phase 5) Handover & Post-Occupancy (Soft Landings / Aftercare)

Aftercare period for tuning, optimization, and defect resolution
Validate real performance and reduce the performance gap
Establish energy baseline and calibrate KPIs

Output: A truly “operable” building/site—supported by data and process

25-Item Design for FM Checklist

A) Equipment and Plant Space Architecture

Service access for each equipment item (at least two sides)
Heavy component handling route
Adequate plant room height and lighting
Floor drains / water collection and proper drainage
Separation of wet/contaminant areas
Spare parts storage near critical points

B) Electrical & Service Resilience

Redundancy for critical equipment (N+1 or project equivalent)
Separation of critical vs non-critical loads
Safe access to panels and cable routes
Ability to test generator/UPS periodically without service disruption

C) Mechanical & HVAC

Filter replacement without heavy dismantling
Isolation points for zoned servicing
Design for balancing (dampers/valves)
Condensate control and access to drain pans

D) Monitoring, BMS & Energy

Sub-metering for major consumers
Data archiving and reporting
Sensors at decision-making points (not decorative only)
Energy KPIs defined from the beginning (baseline)

E) Data & Handover

Asset register with minimum required fields
Physical tagging aligned with the register
Searchable O&M manuals
Initial PM plan
Warranties and service conditions
Operator training + competency validation

F) Commissioning & Aftercare

Test plan + signed test records + aftercare period

Common Mistakes (and the Fix)

Selecting equipment based on lowest purchase price → Run at least one LCC comparison for key options.
Pushing documentation handover to the end → Make information deliverables contractual from day one (BIM/ISO 19650 approach).
Token commissioning → Commissioning means performance verification and documentation against defined objectives.
No aftercare period → Use Soft Landings to seriously reduce the performance gap.

If You Want to Achieve the Following in Your Building/Industrial Projects…

Control OPEX starting from the design stage,
Deliver data-driven handover usable in CMMS/CAFM,
Execute real commissioning and aftercare,
And smooth the path for FM deployment (ISO 41001),

…we can deliver a Design for FM Package for you: from LCC and value engineering to handover requirements, commissioning checklists, and operational readiness of your FM/operations team.

FAQ

1) Is Design for FM only for large buildings?

No. Wherever maintenance/energy/downtime costs matter, Design for FM creates value—from office buildings to clinics and industrial sites.

2) What exactly does LCC mean?

ISO 15686-5 provides guidance for LCC analysis in buildings, and RICS explains the difference between LCC and WLC.

3) What problem does Soft Landings solve?

Reducing the performance gap between design intent and operational outcomes.

4) Why is ISO 19650 important in Design for FM?

Because it targets secure, consistent information management across the asset life cycle (with BIM) and standardizes operational information handover.