Dead Zones Eliminated: Whole-Home Mesh WiFi in a Large Baulkham Hills Property
Four bedrooms, two storeys, a granny flat and a pool area — all with full-speed WiFi.
The Situation
A large two-storey home in Baulkham Hills with an attached granny flat had significant WiFi coverage problems. The NBN router sat in the ground-floor study. The upstairs bedrooms had weak signal. The granny flat had no usable WiFi at all. The backyard and alfresco area were completely without coverage. A family member working from home in the upstairs home office was dropping out of video calls multiple times per day, causing real professional problems.
What We Found On The Assessment
A standard NBN-supplied modem-router placed in the study — designed for a small apartment, not a 42-square double-storey home with brick internal walls and concrete ceilings. WiFi speed in the study: 95 Mbps (the NBN plan was 100 Mbps — essentially full speed). WiFi speed upstairs master bedroom: 8 Mbps. Granny flat: 0 Mbps (no signal). The problem was not the NBN connection or the internet speed — it was the WiFi coverage. The router's radio signal could not penetrate the building materials across the distances involved.
How We Set It Up
**System chosen:** TP-Link Deco XE75 mesh system — three nodes configured as a tri-band mesh with a dedicated backhaul channel, ensuring full speed reaches each node without competing with client devices. **Node placement:** - Node 1 (main): Connected directly to NBN router via ethernet — full 1Gbps backhaul - Node 2: Upper floor hallway — covers all upstairs bedrooms and home office - Node 3: Granny flat — connected via powerline ethernet adapter run through the meter box **Result:** Seamless roaming as devices move between floors and areas. Single SSID — devices connect automatically to the strongest node. **Post-installation:** - Speed test ground floor: 98 Mbps - Speed test upstairs home office: 94 Mbps - Speed test granny flat: 87 Mbps - Speed test backyard alfresco: 72 Mbps
The Outcome
Full-speed WiFi throughout the entire property including granny flat and backyard. The home office worker has not dropped a video call since installation. Streaming works simultaneously on 8 devices across the property without any buffering. Total installation time: 3 hours.
Is your home WiFi as good as your NBN plan?
Your NBN plan and your WiFi are two different things
Many families pay for 100 or 250 Mbps NBN plans but receive only a fraction of that speed in rooms away from the router. The internet connection is fast — the WiFi coverage is not keeping up. These are two separate problems with separate solutions.
Standard routers are designed for small spaces
The router supplied by your NBN provider is designed for an apartment or small house with one or two rooms. In a large Australian home with brick walls and multiple floors, you need a dedicated system.
Mesh systems are now the standard solution
A mesh system uses multiple interconnected nodes placed around the property. Each node provides full-speed WiFi in its area and hands off devices seamlessly as you move. The technology that was enterprise-only five years ago is now affordable for home use.
Powerline adapters solve the granny flat problem
Running ethernet to a granny flat is often impractical. Powerline adapters send the network signal through your existing electrical wiring — no trenching, no cabling, just plug-in and configure.
Frequently asked questions
How much does mesh WiFi installation cost in Western Sydney?
Hardware for a 3-node mesh system is $300–$600 depending on the brand and speed tier. Installation (including configuration, placement assessment and testing) is $149–$250. We give a full quote after assessing your property.
What mesh system do you recommend?
For most Hills District and Western Sydney homes we recommend TP-Link Deco or Eero Pro systems depending on property size and layout. For larger properties or those requiring business-grade performance, we recommend Ubiquiti UniFi. We advise based on your specific situation.
Can you fix WiFi in a granny flat or separate building?
Yes. Powerline adapters, MoCA adapters or outdoor WiFi access points can extend network coverage to granny flats, garages, sheds and outdoor entertainment areas. We assess the best option for your property layout.
Will a mesh system fix my NBN speed?
If your NBN speed is slow because of coverage (weak signal in certain rooms), yes. If your NBN speed is slow because of a plan or provider issue, mesh WiFi will not help — but we can diagnose which problem you have and advise accordingly.
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