Hospital Planning & Departmental Zoning: Best Practices (2026-27)

Hospital planning and departmental zoning decide how well a hospital works long before any finishes or equipment are chosen. Zoning is the arrangement of departments into logical groups so that patients, staff, visitors, supplies and waste move along short, safe and separate routes. Good zoning shortens the trip from the ambulance bay to the operating theatre, keeps infection risk under control and lets the building grow without tearing out what already works. This guide sets out the best practices that hospital owners and design teams in Pakistan should apply in 2026-27.

What Hospital Planning Involves

Hospital planning turns a clinical brief into a building. It starts with the services the hospital will offer, the expected patient volumes and the number of beds, theatres and consulting rooms. From these the planner prepares a space programme, an adjacency matrix showing which departments must be close to each other, and then block plans that test different arrangements on the site.

Zoning is the heart of this process. Once the zones and their relationships are fixed, the architecture, structure and engineering systems are designed around them. Changing zoning late in design is expensive, which is why it deserves careful attention early. Our guide to the complete list of hospital departments lists the departments most hospitals need to place.

The Main Functional Zones

Critical Adjacencies Between Departments

Some departments must be next to each other or connected by a dedicated lift. Others should never share a corridor. The most important adjacencies in a general hospital are:

• Emergency to imaging: trauma patients often need X-ray or CT within minutes.
• Emergency to theatres and ICU: by a short horizontal route or a dedicated bed lift.
• Theatres to CSSD: ideally with a clean lift or pass-through from sterile stores and a separate dirty return.
• Theatres to ICU and recovery: on the same floor where possible.
• Labour and delivery to obstetric theatre and neonatal unit: for emergency caesarean sections.
• Pharmacy and laboratory to outpatients: to keep walking distances short for patients.

The design of ICU and emergency departments deserves particular attention because these adjacencies have the greatest effect on outcomes.

Separating Movement: Patients, Staff, Visitors and Supplies

A well-zoned hospital gives each type of traffic its own route. Outpatients and visitors use public corridors and lifts. Inpatients on beds use dedicated bed lifts and clinical corridors. Staff have separate entrances and changing areas. Clean supplies, food and linen travel on service routes, while soiled linen, waste and the deceased leave by another path.

Separation improves privacy and dignity, reduces congestion and supports infection control. It also improves security, because public access can be limited to defined areas. Our article on patient flow in hospital design explains how these routes are mapped.

Risk-Based Zoning for Infection Control

Not every area of a hospital carries the same infection risk. Zoning by risk allows ventilation, finishes and access control to be matched to each area.

Isolation rooms and airborne-infection areas need pressure control in line with healthcare ventilation standards. See hospital design for infection control for zoning details, finishes and flow.

Vertical Zoning in Multi-Storey Hospitals

Urban plots in Lahore, Karachi and Islamabad usually force hospitals upwards. Vertical zoning follows the same logic as horizontal zoning:

• Basement: plant rooms, stores, medical gas manifolds (where permitted), mortuary and parking
• Ground floor: emergency, outpatients, imaging, pharmacy and main reception
• First floors: theatres, ICU, CSSD and labour suite, stacked to share services
• Upper floors: wards and private rooms
• Roof: chillers, cooling towers, solar panels and water tanks

Stacking departments with heavy services (theatres, ICU, imaging) above each other keeps duct and pipe risers short. Lifts must be planned as carefully as corridors: at least one bed lift dedicated to emergency and theatre transfers, plus separate public and service lifts in larger hospitals.

Zoning Support Services and Back-of-House Areas

Support services are often squeezed into whatever space is left, yet they keep the hospital running every hour of the day. Good practice is to group them in a service zone with its own vehicle access, away from the main entrance and patient gardens.

What belongs in the service zone

• Loading bay and central stores for medical and general supplies
• Kitchen with separate routes for raw food in and waste out
• Laundry or linen exchange, with clean and soiled sides kept apart
• Healthcare waste holding area that can be reached by collection vehicles without passing clinical areas
• Mortuary with a discreet exit for families and funeral vehicles
• Generator, transformer, water tank and medical gas plant areas, protected and accessible for maintenance

Zoning by hospital size

In a small hospital of a few dozen beds, zones may share a single floor and be separated by corridors and doors rather than by wings. In a large multi-specialty hospital, zones often become separate blocks linked by a hospital street. The principles stay the same; only the scale changes.

Planning for Expansion and Flexibility

Most hospitals in Pakistan grow in stages. Zoning should leave each department room to expand without moving its neighbours. Practical measures include placing departments with fixed equipment, such as imaging and theatres, away from the edge where growth is planned; using a regular structural grid; sizing shafts, plant rooms and electrical capacity for the final phase; and keeping one side of the site free for future blocks.

The Zoning Process Step by Step

Common Zoning Mistakes

• Placing outpatient waiting areas on clinical corridors
• Putting theatres and ICU on different floors without a dedicated lift
• Using the same lift for patients, food and waste
• Locating imaging far from emergency
• Leaving no room for expansion beside high-demand departments
• Fixing the zoning before the clinical brief and equipment list are confirmed

ACCO tests zoning options at concept stage as part of its hospital design and construction services, so that structure and MEP are designed around a settled plan.

Frequently Asked Questions

Conclusion

Hospital planning and departmental zoning are the decisions that every later design choice depends on. Getting adjacencies, flows, risk zones and expansion space right at concept stage produces a hospital that is safer for patients, easier for staff and cheaper to run and extend. For owners in Pakistan, that means agreeing the clinical brief, testing two or three zoning options and confirming licensing requirements before construction drawings begin. It is worth spending the time on zoning before a single detailed drawing is made.