Cleaning a standalone office is relatively straightforward.
There is one company occupying the premises, one management team setting the requirements and usually one cleaning arrangement covering the workplace.
A multi-tenant commercial building is different.
Several businesses may occupy different floors or units while sharing lifts, lobbies, washrooms, staircases, corridors, loading areas and other facilities.
This creates a practical question that is surprisingly easy to overlook:
Who is responsible for cleaning each part of the building?
A tenant may have its own cleaning provider for its office, while the building management has another contractor responsible for common areas. In some buildings, one contractor may manage both.
Without clearly defined boundaries, areas can be missed, duplicated or cleaned according to different standards.
For businesses arranging office cleaning services, understanding these boundaries is important before a cleaning contract is signed.
At GreenGarden, cleaning requirements can be structured around the actual property, tenant areas and shared facilities rather than treating a multi-tenant building like a single office.
What Is a Multi-Tenant Office Building?
A multi-tenant office building is a commercial property occupied by multiple independent businesses.
A typical building might contain:
- Tenanted offices
- Shared lift lobbies
- Common corridors
- Shared washrooms
- Reception or security areas
- Staircases
- Passenger lifts
- Service lifts
- Loading areas
- Refuse collection points
- Shared pantry or breakout facilities
- Building management offices
Some areas belong directly to an individual tenant’s leased premises.
Others are controlled and maintained by the building operator.
This distinction is the starting point for determining cleaning responsibility.
Tenant Areas vs Common Areas
The simplest way to understand cleaning responsibility is to divide the building into two broad categories.
Tenant Areas
These are spaces occupied and controlled by individual businesses.
Examples include:
- Private offices
- Open-plan work areas
- Internal meeting rooms
- Tenant pantries
- Internal washrooms
- Internal corridors
- Storage rooms
- Reception areas located within the leased unit
The tenant may appoint its own cleaning provider for these areas.
Common Areas
These are spaces shared by multiple building users.
Examples include:
- Lift lobbies
- Common corridors
- Shared washrooms
- Staircases
- Main entrances
- Building reception
- Shared waiting areas
- Common loading areas
- Refuse rooms
- Shared facilities
These areas are commonly managed through the building’s facilities or property-management arrangements.
The exact boundaries depend on the building.
Why Cleaning Boundaries Matter
Imagine a tenant occupies Level 12.
Its cleaning contractor cleans the office interior.
The building’s common-area contractor cleans the corridor and lift lobby.
Now imagine there is a small transition zone immediately outside the tenant’s entrance.
Who cleans it?
If both contractors assume the other is responsible, it can remain dirty.
The opposite can also happen.
Both contractors may clean the same area, creating duplicated work and unnecessary cost.
A written responsibility matrix removes this ambiguity.
Create a Cleaning Responsibility Matrix
A multi-tenant property can use a simple matrix such as:
| Area | Tenant | Building Management | Cleaning Provider |
|---|---|---|---|
| Tenant office | ✓ | Tenant-appointed | |
| Tenant pantry | ✓ | Tenant-appointed | |
| Tenant washroom | ✓ | Tenant-appointed | |
| Lift lobby | ✓ | Building-appointed | |
| Common corridor | ✓ | Building-appointed | |
| Shared washroom | ✓ | Building-appointed | |
| Main entrance | ✓ | Building-appointed | |
| Tenant-side entrance | Agreed | Agreed | Defined by contract |
| Loading area | ✓ | Building-appointed | |
| Refuse room | ✓ | Building-appointed |
This is only an example.
The actual division of responsibility should follow the property’s lease arrangements, management requirements and cleaning contracts.
The important point is that every area should have one clearly identified owner.
The Boundary Between Tenant and Common Area
The most difficult areas are often not clearly one or the other.
These can include:
- Tenant entrances
- Shared reception areas
- Corridors immediately outside tenant units
- Shared pantry facilities
- Common meeting rooms
- Service corridors
- Lift waiting areas
- Shared terraces or balconies
- Access-controlled transition zones
These areas should be specifically identified during the site survey.
Do not assume that “common area” automatically includes everything outside a tenant’s office.
Who Cleans the Corridor Outside a Tenant’s Office?
This depends on the building’s cleaning arrangement.
In some properties, the building contractor maintains all common corridors.
In others, a tenant may have responsibility for certain areas immediately outside its premises.
The answer should therefore appear in the contract or building rules.
A cleaning provider should not have to determine ownership while standing in front of a dirty corridor.
Shared Washrooms Need a Different Approach
Common washrooms can be among the busiest areas in a multi-tenant building.
Usage may come from employees, visitors, contractors and delivery personnel from several companies.
The cleaning programme may therefore need to consider:
- Number of tenants
- Typical building occupancy
- Visitor traffic
- Number of washroom fixtures
- Peak periods
- Cleaning frequency
- Consumable usage
- Waste collection
- Inspection requirements
A shared washroom should not necessarily be managed according to the requirements of the largest tenant.
Its service level should reflect the building’s overall usage.
Lift Lobbies Have High Visibility
Lift lobbies are another important common area.
Employees and visitors pass through them throughout the day.
The cleaning requirements can include:
- Floor cleaning
- Lift-door cleaning
- Button-area cleaning
- Handrails
- Glass panels
- Walls
- Waste bins
- Visible fingerprints
- Spill response
The appropriate cleaning frequency depends on building traffic.
A small low-rise commercial property and a busy high-rise office tower can have very different lobby workloads.
Cleaning the Lift Interior
The inside of a passenger lift may technically be a shared facility, but it should be explicitly included in the cleaning scope.
A lift can experience concentrated traffic because many people use the same small space throughout the day.
The cleaning specification may address:
- Floor
- Door surfaces
- Button panels
- Handrails
- Mirrors
- Stainless-steel surfaces
- Visible fingerprints
Material compatibility is important.
Different lift finishes may require different cleaning methods, particularly for stainless steel, glass and specialised surfaces.
Entrance Cleaning Requires More Than Mopping
The main building entrance can be one of the most heavily trafficked areas.
Dirt from outside can be brought indoors by:
- Shoes
- Delivery carts
- Wheelchairs
- Equipment
- Rainwater
- Dust
- Outdoor debris
The entrance cleaning programme may therefore involve:
- Entrance mats
- Floor cleaning
- Spot cleaning
- Glass cleaning
- Door-handle cleaning
- Waste removal
- Spill response
Singapore’s weather can also make entrance conditions change quickly during periods of rain.
The appropriate response should be incorporated into building operations rather than relying on one fixed cleaning cycle.
Refuse Rooms Require Clear Responsibility
Waste areas are another potential boundary problem.
A multi-tenant building may have designated refuse rooms where individual tenants deposit waste.
The cleaning responsibility should distinguish between:
Tenant responsibility
Moving waste from the tenant’s office to the designated collection point.
Building responsibility
Maintaining the shared refuse room and coordinating building-level waste arrangements.
Waste contractor responsibility
Collection and disposal according to the applicable arrangement.
The exact division should be agreed contractually.
Otherwise, one party may assume that transporting waste automatically includes cleaning the refuse room.
Cleaning Loading Bays
Loading areas may contain more than ordinary office dirt.
They can experience:
- Packaging debris
- Dust
- Water
- Delivery traffic
- Cardboard
- Pallet movement
- Occasional spills
The cleaning frequency should therefore reflect the operational use of the loading area.
Because loading bays may also be used by multiple tenants, cleaning schedules should be coordinated with building operations.
Cleaning during peak delivery periods may create unnecessary conflict.
Multi-Tenant Buildings Need Coordinated Access
Access is one of the biggest operational differences from a standalone office.
A cleaning contractor may need access to:
- Tenant units
- Service corridors
- Plant-adjacent areas
- Refuse rooms
- Loading bays
- Shared washrooms
- Common facilities
Tenant businesses may also have their own security requirements.
The building should therefore establish:
- Access hours
- Security procedures
- Lift access
- Loading-bay procedures
- Key or card controls
- Restricted zones
- Emergency contacts
A cleaner should never have to improvise building access.
After-Hours Cleaning Can Become Complicated
A tenant may want its office cleaned from 7 p.m. to 10 p.m.
Another tenant may operate until midnight.
A third company may run a 24-hour operation.
At the same time, the building’s common areas need to remain accessible.
This makes scheduling more complex than in a standalone office.
The cleaning plan can separate:
Tenant cleaning windows
Cleaning inside leased premises.
Common-area cleaning windows
Cleaning shared facilities.
High-disruption cleaning
Machine scrubbing, polishing or other equipment-intensive work.
Emergency response
Spills or unexpected contamination that cannot wait until the next scheduled cycle.
The objective is to create a coordinated building-wide operation.
Do Not Let Cleaning Contractors Block Building Operations
Multi-tenant buildings have more people moving through shared spaces.
Cleaning equipment should therefore be positioned carefully.
Potential issues include:
- Trolleys blocking lift doors
- Wet floors across main corridors
- Vacuum cables crossing walkways
- Cleaning machines blocking entrances
- Waste carts interfering with deliveries
The cleaning contractor should work according to building traffic.
For high-traffic areas, cleaning can be performed in smaller sections where practical.
Appropriate warning signage and safe work practices should also be followed.
What Happens When Multiple Tenants Have Different Standards?
This can be challenging.
Tenant A may require a basic cleaning programme.
Tenant B may require a higher presentation standard because it receives clients throughout the day.
Tenant C may require additional cleaning for a specialised workplace.
The solution is not necessarily to impose the highest standard on the whole building.
Instead, divide the cleaning scope.
Building Standard
Defines the required standard for common areas.
Tenant Standard
Defines the additional requirements inside each leased premises.
Special Requirements
Documents areas requiring additional cleaning methods or frequency.
This creates a consistent building-wide baseline while allowing individual businesses to purchase additional services.
How GreenGarden Can Manage Different Tenant Requirements
A multi-tenant property can use a core-and-add-on model.
Core Building Services
For common areas:
- Lobbies
- Corridors
- Shared washrooms
- Staircases
- Main entrances
- Common facilities
Tenant Services
For individual units:
- Work areas
- Tenant meeting rooms
- Private pantries
- Internal washrooms
- Office floors
- Internal glass
Additional Services
Where requested:
- Carpet treatment
- Upholstery cleaning
- Floor maintenance
- Detailed glass cleaning
- High-level cleaning
- Deep cleaning
This structure makes it easier to understand exactly what is included in each cleaning arrangement.
Cleaning Different Floors Differently
A multi-tenant building may also have very different requirements from floor to floor.
For example:
Level 3
Mostly low-occupancy offices.
Level 5
High-density office with several hundred daily users.
Level 7
Large training facility with substantial visitor traffic.
Level 10
Corporate office with frequent client meetings.
The common-area cleaning programme may therefore need to identify floor-specific traffic patterns.
This information can help management review whether cleaning resources are distributed appropriately.
Building Management Should Collect Usage Information
Cleaning decisions become easier when facilities teams know how the building is being used.
Useful information includes:
- Approximate tenant occupancy
- Major tenant move-ins and move-outs
- Visitor traffic
- Training or event schedules
- Operating hours
- Renovation activity
- Vacant units
- High-use common facilities
A change in building occupancy may affect the cleaning workload.
For example, when a previously vacant floor becomes fully occupied, shared facilities may experience increased demand.
Cleaning During Tenant Fit-Outs
Renovation and tenant fit-out periods create another potential boundary.
One tenant may be undergoing construction while neighbouring businesses continue normal operations.
Construction-related dust and debris can enter:
- Common corridors
- Lift lobbies
- Service lifts
- Building entrances
The cleaning responsibilities should be defined separately from routine tenant cleaning.
Post-construction cleaning should not automatically become part of the normal daily cleaning contract unless it is specifically included.
What Happens When a Tenant Moves Out?
A tenant moving out can create temporary cleaning requirements that differ from routine service.
There may be:
- Empty rooms
- Abandoned furniture
- Floor marks
- Adhesive residue
- Dust
- Rubbish
- Removed partitions
- Fixtures requiring cleaning
The building should distinguish between normal recurring cleaning and reinstatement or move-out cleaning.
This can then be priced and scheduled separately where required.
A Simple Multi-Tenant Cleaning Responsibility Checklist
Before appointing a cleaning contractor, building management should confirm:
Tenant Areas
☐ Which areas belong to each tenant?
☐ Who cleans internal tenant areas?
☐ Are tenant-specific standards documented?
Common Areas
☐ Who cleans corridors?
☐ Who cleans lift lobbies?
☐ Who cleans shared washrooms?
☐ Who cleans staircases?
☐ Who cleans the main entrance?
Waste
☐ Who moves tenant waste?
☐ Who maintains refuse rooms?
☐ Who arranges waste collection?
Access
☐ What are cleaning hours?
☐ How are access cards managed?
☐ Which areas are restricted?
☐ Who is the escalation contact?
Special Work
☐ Who handles tenant renovation cleaning?
☐ Who handles carpet treatment?
☐ Who handles floor restoration?
☐ Who handles move-in or move-out cleaning?
The answers should be written down.
Example: A Six-Storey Multi-Tenant Office Building
Consider a hypothetical building with:
- Six office floors
- 18 tenant companies
- 1 shared main entrance
- 6 lift lobbies
- 4 common washrooms per floor
- Shared staircases
- One loading area
- One refuse room
Suppose each tenant hires its own cleaner.
The building management still needs a separate plan for:
- Main entrance
- Lift interiors
- Lift lobbies
- Common corridors
- Common washrooms
- Staircases
- Refuse room
- Loading area
Without a defined responsibility matrix, gaps can easily occur.
For example, Tenant 11 may clean its office but assume that the corridor immediately outside the unit is part of its contract.
Building management may assume the opposite.
The area then has no clear owner.
A written matrix solves the problem.
How to Compare Cleaning Quotations for a Multi-Tenant Building
Price comparison becomes more complicated when different contractors use different assumptions.
A building manager should compare:
Coverage
Which common and tenant areas are included?
Frequency
How often is each area cleaned?
Manpower
How many working hours are allocated?
Operating window
When will cleaning occur?
Supervision
Who checks the service?
Equipment
What equipment is included?
Consumables
Who supplies washroom and cleaning consumables?
Specialist work
Which periodic services are included?
Emergency response
How are spills and urgent requests handled?
A lower price may simply reflect a narrower scope.
The quotes should therefore be compared on equivalent requirements.
When Should the Building Cleaning Plan Be Reviewed?
A multi-tenant cleaning programme should be reviewed when the building changes.
Examples include:
- A major tenant moves in
- A large tenant leaves
- Floor occupancy increases
- A new shared facility opens
- Visitor traffic increases
- Renovation works begin
- Operating hours change
- Shared washroom usage rises
- New building amenities are introduced
A cleaning programme designed for a half-empty building may no longer be suitable after several floors become fully occupied.
GreenGarden’s Approach to Multi-Tenant Cleaning
GreenGarden can structure cleaning around the distinction between tenant premises and shared building facilities.
The first step is to understand the property.
This includes reviewing:
- Number of tenants
- Floor layouts
- Common areas
- Tenant areas
- Building operating hours
- Traffic patterns
- Washroom usage
- Lift usage
- Waste arrangements
- Access controls
- Periodic cleaning requirements
The cleaning programme can then be divided into defined zones with clear ownership.
For tenants requiring a consistent recurring service inside their own premises, daily office cleaning can be incorporated into their individual cleaning arrangement.
The building-wide service can then remain focused on the areas controlled by management.
Frequently Asked Questions
Does the tenant or landlord pay for office cleaning?
It depends on the lease and building-management arrangement. Tenant-specific cleaning may be paid directly by the tenant, while common-area cleaning may form part of the building’s management or service charges.
Who normally cleans a shared lift lobby?
This is typically handled through the building’s common-area cleaning arrangement, but the exact responsibility should be confirmed in the building’s management agreement.
Can one cleaning company clean both tenant offices and common areas?
Yes, where the building and tenants choose that arrangement. A single provider can potentially simplify coordination, but the scope and billing responsibilities for each area should still be documented.
How should cleaning responsibility for tenant entrances be decided?
The responsibility should be explicitly defined because tenant entrances can sit at the boundary between leased premises and common areas.
Should every tenant receive the same cleaning standard?
Not necessarily. Common areas can operate under a building-wide standard while individual tenants can specify additional requirements for their own premises.
Who cleans during a tenant renovation?
Renovation and post-construction cleaning should be separately defined unless the existing cleaning contract expressly includes it.
How can a building prevent areas from being missed?
Create a responsibility matrix covering every tenant space and every common area. Each area should have a clearly identified responsible party.
Final Takeaway
Cleaning a multi-tenant office building is not simply a larger version of cleaning one office.
The challenge is coordination.
Different businesses occupy different spaces, while many of the building’s most important facilities are shared.
That makes responsibility especially important.
Who cleans the tenant’s office?
Who cleans the corridor?
Who cleans the lift?
Who maintains the shared washroom?
Who removes waste from the refuse room?
Who handles renovation dust?
Who responds to spills?
Who pays for additional work?
These questions should be answered before the cleaning contract begins.
A well-designed multi-tenant cleaning programme divides the property into clearly defined zones, establishes responsibility for each area and sets appropriate cleaning frequencies according to actual usage.
It also establishes access procedures, communication channels and rules for additional work.
For building managers, this creates greater accountability.
For tenants, it creates clearer expectations.
For cleaning contractors, it provides a defined operational scope.
And for GreenGarden, it provides the foundation for building a cleaning programme that matches how the property is actually occupied.
A multi-tenant building works because many businesses share one property.
Its cleaning operation should be managed with the same level of coordination.