Office Building
Design and cost for office buildings. El-Eman Office provides commercial construction services.
Floor efficiency and column grid
Office building construction cost depends on design efficiency before it depends on materials. The ratio of lettable area to total built area determines the return, and the more corridors, services and columns take space from offices, the lower the project value. The designer therefore aims for a regular column grid that allows flexible partitions and fewer heavy beams.
- Group services such as toilets, stairs and lifts in a central core.
- Avoid columns inside open spaces where possible.
- Give attention to floor height so services and suspended ceilings fit without squeezing.
Mechanical and electrical systems
In office buildings, air conditioning, electrical, low-current systems and fire protection take a large part of the budget and affect technical space. The designer should choose the air-conditioning type suited to the building's size and use, and provide space for equipment and vertical shafts so services reach every floor without clashes.
- Calculate electrical loads and set transformer and panel capacity.
- Design the runs in floors or ceilings to suit partition flexibility.
- Coordinate cable and pipe routes in unified drawings to avoid clashes.
- Plan emergency exits and the alarm and fire fighting system.
Procurement stages and comparing offers
Offers often differ because of different specifications, not different efficiency. A tender should therefore include precise specifications and clear bills of quantities, and separating the structure contract from finishing and systems contracts is preferable if you want to control quality. Items some owners overlook:
- Protection and support works for neighbouring buildings during excavation.
- Testing, calibration and commissioning before handover.
- Signage, facades, external works and parking.
- Permit fees, consultants and insurance.
Permits, handover and operation
Before starting an office building, check height, setback, parking and Civil Defence requirements, since these affect the number of floors and areas possible. At handover, lifts, air conditioning, fire fighting and electrical systems are tested, and final drawings and operating manuals are delivered. A maintenance plan helps preserve efficiency and value.
- Ask for a record of all tests and certificates at handover.
- Review the as-built drawings of the systems before final acceptance.
- Train the operating team on control panels and smart systems.
Frequently asked questions
Is full fit-out better or handing over shell space?
It depends on strategy. Shell space gives the tenant design freedom, while a full fit-out raises value and speeds letting in some markets. The decision is commercial before it is engineering.
How do I avoid clashes between systems?
Prepare unified coordination drawings between architectural, structural, electrical and air-conditioning work before execution, and resolve clashes on paper before they appear on site.
Why does the land survey matter here?
It defines the land boundaries, levels and building setbacks, supports excavation and foundation calculations, and ensures the building matches the licensed drawings.
