Energy efficiency is not a decorative label on a brochure. It is the result of coordinated decisions about the building envelope, cooling and ventilation, lighting, electrical systems, hot water and consumption monitoring. The Oman Building Code portal presents the Oman Energy Efficiency and Sustainability Code as the reference regulating energy-efficiency and sustainability requirements. For a buyer, the practical question is simple: what evidence shows that the property has been designed and delivered to perform efficiently?

Start with the thermal envelope

The envelope includes the roof, external walls, floors, doors and windows separating conditioned space from outside or unconditioned areas. These elements determine how quickly heat enters a home and how hard the air-conditioning system must work. Ask for the approved envelope specification, not only a statement that “insulation is included.” Look for roof and wall insulation values, window U-factor and solar heat gain coefficient, external shading, door and window sealing, and any air-leakage test or inspection records applicable to the project.

Read cooling and ventilation as one system

A larger air conditioner is not automatically a better one. Efficient performance begins with a documented cooling-load calculation, correctly sized equipment, efficient distribution, accessible filters and controls that match how the spaces are used. Ventilation matters too: fresh-air provision and exhaust should be planned without creating unnecessary cooling demand. Ask which standard and design conditions were used, whether spaces are independently controlled, and what maintenance access has been provided.

Check lighting, electricity and controls

Review both the fittings and the way they are controlled. Efficient lamps are only one part of the picture; occupancy controls, daylight-responsive controls and sensible zoning can reduce waste in corridors, parking areas and shared facilities. In larger commercial buildings, the Code includes energy monitoring requirements that separate major end uses such as HVAC, interior and exterior lighting, plug loads and other building operations. Where relevant, ask to see the meter schedule, monitoring interface and who will review the data after handover.

Do not overlook water

The sustainability provisions address efficient plumbing fixtures, hot-water distribution and water monitoring. A buyer should ask about fixture flow specifications, hot-water pipe insulation, individual or subsystem metering where applicable, leak-detection measures and the management of pools, irrigation and decorative water features. The point is not to collect technical numbers for their own sake; it is to understand whether water use can be measured, maintained and corrected when consumption changes.

Oman’s climate is not one condition

The 2025 Code assigns Omani cities to thermal and moisture zones and uses those classifications to determine applicable envelope and mechanical requirements. A specification suitable for one location should not be assumed to perform identically in another. Ask the consultant to identify the project’s climate and moisture zones, the compliance path used, and how the selected insulation, glazing and HVAC design respond to that location.

A buyer’s practical checklist

• Request the approved energy-efficiency compliance documents and relevant inspection records.
• Verify roof, wall and glazing specifications against the submitted design.
• Ask for cooling-load calculations, equipment schedules and ventilation strategy.
• Review lighting controls in the unit and common areas.
• Confirm how electricity and water consumption are measured and reported.
• Obtain operating manuals, warranties and the planned maintenance responsibilities.
• Check the project’s climate zone rather than comparing specifications in isolation.

What about solar readiness?

The commercial and residential solar-ready appendices reserve suitable roof space and connection pathways for future solar systems. However, the 2025 Oman Energy Efficiency and Sustainability Code states that these appendices are not mandatory unless specifically adopted. Solar readiness should therefore be verified against the project’s approved requirements; it should not be presented as a universal obligation. It is also different from having a solar system already installed.

Efficiency supports comfort, operational clarity and informed ownership, but it should not be treated as a guaranteed price premium. The strongest buying decision is based on approved documents, measurable systems and professional verification. To discuss a Rikaz property and request its available technical information, call 80083333 or message us on WhatsApp at 95000021.