High-Density Wi-Fi Design: How Many Access Points Do You Really Need?
There is no deterministic “one AP per X square metres” rule that survives a Singapore office. Count people and devices in the busiest hours, then look at walls, ceiling height and how noisy the neighbours are. A quiet floor of 80 desks is not the same problem as a 200-seat town hall. Buying fewer, bigger APs to “save licences” usually creates sticky laptops and slow cells. Buying a large number of APs without a channel plan creates interference.
Related pages: Cisco Meraki · How to choose the right Cisco / Meraki access point · The hidden cost of Wi-Fi upgrades · Fixing sticky clients · Knowledge base
Why does “square metres per AP” fail?
Coverage is “can I see an AP.” Capacity is “can fifty laptops on a call share it.” High-density is a capacity problem that looks like a coverage problem on a heat map.
Concrete cores, meeting-room glass and other tenants’ Wi-Fi affect signal quality. The number of access points needed in a warehouse is fewer than the number needed in a high density office of the same size.
What should you count instead?
| Input | Why it changes AP count |
|---|---|
| Busy-hour people | Design for the peak room, not the empty floorplate |
| Devices per person | Phone + laptop is normal; add meeting-room gear |
| Room type | Open desk vs training theatre vs clinic waiting vs warehouse aisle |
| Ceiling and walls | High ceiling and concrete shrink useful 6 GHz range |
| Switch and cable | Extra APs need ports, PoE and drops |
What is a sensible starting range?
Use this only to see if a quote is in the right order of magnitude. A site survey or at least a floor plan with seat layout still wins.
| Space | Starting thought | Do not |
|---|---|---|
| Open office, moderate desks | One AP covering a group of desks — often on the order of a few dozen seats per cell if walls are kind | Hide two APs to save two licences |
| Meeting / huddle rooms | Dedicated AP if the room is used all day and the door is shut | Assume the corridor AP is enough through glass and concrete |
| Training / exam / all-hands | Plan for every seat with a laptop | One high-end AP in the middle of 150 people |
| Clinic / hotel corridor | More, smaller cells; wall-plate where rooms need it | Office spacing copied onto rooms |
| Warehouse / high ceiling | External-antenna models and a real aisle walk | Ceiling omni counted like a low office |
Wi-Fi 7 does not cut the AP count in half. 6 GHz cells are often shorter. You may need the same number of APs, or more, even with newer radios.
Is one expensive AP better than two mid-tier APs?
Almost never in a dense room. Two cells share people. One cell shares air. Licences and switch ports cost money; a failed all-hands costs more. Size the model to the room, then size the count. Model names are in the AP guide.
What does a buyer need to send to get a real number?
Floor plan with walls and ceiling height
Headcount by zone at the busy hour
Current AP map if you have one
Switch generation and whether new cables are allowed
Without that, any “you need 18 APs” on a first call is a guess. Treat it as a guess.
FAQ
Can configuration change remove the need for additional access points?
Turning up the transmit power to cover a meeting room blind-spot usually makes roaming worse for other areas, causing more sticky clients.
Do we count guest phones?
Yes, if guests share the same wireless infrastructure. A guest VLAN isolates their traffic, but they still use the same air-time as users.
Will a survey change the first estimate?
Often by a few APs, sometimes by a lot when there is a lot of concrete and glass. Budget a small buffer
.
Send the plan and busy-hour headcount. Megatron Technology will propose a count and a model mix — and the licence and switch lines that go with it — before anyone orders a number that only looked cheap.
Request a density check: www.megatron.com.sg/ciscomeraki · Contact