How Saudi Projects Can Move from Assumption-Based Delivery to Data-Based Delivery
Saudi Arabia’s construction sector is one of the most active in the world. Giga-projects, commercial towers, healthcare campuses, educational facilities, and residential developments are delivered at a scale and pace that few other markets match. Yet for all the sophistication of design, engineering, and procurement that characterises the Kingdom’s leading projects, one fundamental gap persists: the gap between what a building is designed to deliver and what it actually delivers when it is completed and occupied.
This gap — sometimes called the performance gap, sometimes the design-to-operation gap — is not unique to Saudi Arabia. It exists in every major building market. But in Saudi Arabia, the consequences of the gap are particularly acute, because the climate conditions the building must resist are extreme, the energy costs of underperformance are significant, and the regulatory framework is moving rapidly toward requiring verified performance rather than design compliance. Closing this gap requires moving from assumption-based delivery to data-based delivery — and that shift starts with measurement.
What Assumption-Based Delivery Looks Like
Assumption-based delivery is the default model for the vast majority of building projects in Saudi Arabia and internationally. It works as follows: designers produce specifications and calculations that predict the building will perform to a certain standard. Contractors build to those specifications. Commissioning engineers adjust the mechanical systems until they appear to function correctly. The building is handed over with a documentation package that confirms the design was followed.
At no point in this process is the actual performance of the completed building measured against the predictions made at design stage. The airtightness of the envelope is assumed to match the design specification — it is almost never tested. The leakage rate of the duct system is assumed to be within SMACNA limits — it is rarely pressure-tested before handover. The thermal comfort and indoor air quality in occupied spaces are assumed to meet the design intent — they are seldom monitored against baseline data.
The result is a building that is documented as compliant but whose actual performance is unknown. When tenants move in and report that some areas are too warm, or that energy consumption is above budget, or that air quality complaints are frequent, the investigation process is slow and expensive because there is no performance baseline to compare against. The gap between design and reality can only be estimated, not measured.
What Data-Based Delivery Looks Like
Data-based delivery replaces assumptions with measurements at every critical stage of the building’s life cycle. It does not require a fundamentally different construction process — it requires the addition of measurement milestones that verify performance at the points where design assumptions are most likely to diverge from construction reality.
The key measurement milestones for a Saudi commercial building are: airtightness testing at envelope completion, duct pressure leakage testing before commissioning, HVAC commissioning with verified airflow data, and indoor environment quality monitoring during early occupancy. Each of these milestones produces a data record that either confirms the design assumption or reveals a deviation that can be addressed while the building is still in construction mode — before the cost of remediation escalates and before the client has inherited the problem.
The documentation package for a data-based building delivery therefore includes, alongside the standard design and construction records, a set of verified performance certificates: an airtightness test report, a duct leakage test report, a commissioning report with measured airflow data, and an early occupancy indoor environment quality report. This package gives the client something fundamentally more valuable than a standard handover document: evidence that the building performs as it was designed to.
The Regulatory Driver
Saudi Arabia’s regulatory trajectory strongly supports the move toward data-based delivery. The Saudi Building Code’s energy efficiency provisions already require duct leakage testing and HVAC commissioning for qualifying buildings. Airtightness testing is required for buildings targeting green building certifications including LEED and Mostadam. The NEOM development framework includes building performance verification requirements that go significantly beyond standard SBC compliance.
These requirements are not static. The direction of travel in KSA regulatory development — as in building codes globally — is consistently toward tighter performance standards and more rigorous verification requirements. Projects delivered today with comprehensive performance data are positioned ahead of the regulatory curve. Projects delivered on an assumption basis are accumulating a compliance risk that will become visible as verification requirements tighten.
The Commercial Driver
Beyond regulatory compliance, data-based delivery is increasingly a commercial imperative in Saudi Arabia’s institutional and investment-grade property market. Sovereign wealth funds, institutional real estate investors, and major corporate tenants are applying ESG frameworks to their property decisions that require verified performance data — not design calculations, not specification sheets, but actual measured evidence of building performance.
Buildings that can demonstrate verified airtightness performance, confirmed duct integrity, and documented HVAC commissioning results are differentiated assets in this environment. They command higher valuations, attract lower-risk tenants, and generate more defensible sustainability reports. Buildings that cannot provide this evidence are increasingly disadvantaged in comparison — regardless of how impressive their design specifications appear on paper.
How to Make the Transition
The transition from assumption-based to data-based delivery does not require rebuilding project delivery processes from scratch. It requires three changes to the standard Saudi construction programme.
The first change is specification: building performance testing must be included in the project specification as a deliverable, not treated as an optional add-on. Airtightness testing, duct pressure testing, and HVAC commissioning with verified data should be specified as contractual requirements with defined test methods, acceptance thresholds, and reporting formats.
The second change is scheduling: testing milestones must be integrated into the project programme at the correct construction stages. Airtightness testing occurs after envelope completion and before final finishes. Duct leakage testing occurs after duct installation and before commissioning. Allocating time for these milestones — and for any remediation they reveal is necessary — prevents the last-minute scramble that results when testing is added as an afterthought.
The third change is resourcing: specialist testing and verification companies should be engaged as part of the project team from the early stages, not commissioned reactively when a problem emerges. Aeroseal Arabia provides building performance testing, verification, and remediation as an integrated service, allowing projects to plan their measurement programme and remediation capacity together from the outset.
Conclusion
The shift from assumption-based to data-based building delivery is not a future possibility for Saudi projects — it is a current requirement being driven by regulatory frameworks, investment standards, and the practical experience of building owners who have inherited the consequences of the performance gap. The tools, technologies, and expertise to make this shift are available in Saudi Arabia today. Aeroseal Arabia provides the measurement-led building performance services that enable Saudi projects to deliver what they design and design what they can verify. Contact our team to discuss how data-based delivery can be built into your next project from the ground up.
