Network Design for a Small Office: A Plain-English Guide

When the network works, nobody notices it. When it doesn’t, the whole office stops.

Here’s what we usually see when we walk into a small office for the first time. Nobody designed the network. It grew. There’s the router the internet provider dropped off, a couple of switches someone added over the years, and a Wi-Fi access point that was on sale at some point.

If you’re moving into a new space in Richmond Hill, adding people, or just fed up with the Wi-Fi, this is how I’d think about network design for a 10 to 50 person office.

Start with how your people actually work

Before anyone buys hardware, ask a few questions. How many people are in the office, and how many work from home or on the road? Is your work in Microsoft 365, or on a server in the back room? Do you move big files around? Engineering firms work with large CAD drawings all day. Law and accounting offices mostly have lots of small documents.

Don’t forget guest Wi-Fi, printers, cameras, door access and the boardroom screen. The answers tell you how much bandwidth you need, where the Wi-Fi should go and how to split things up.

The internet connection

Get business-grade service. It usually comes with better support and service commitments than a residential plan.

Look at upload speed, not just download. Video calls, cloud backups and sending large files all lean on upload.

I’m also a big believer in a backup connection, either a second line from a different provider or a cellular backup. For a real estate office on a busy closing day, being offline for an afternoon is a real problem.

A real firewall, not the ISP’s box

The box your internet provider gave you is usually a basic router. It isn’t a business firewall.

A proper business firewall lets you block risky traffic and known bad websites. It can run a secure VPN for remote staff if you need one, split the network into zones (more on that below) and keep logs, so you can see what happened if something goes wrong.

Keep its firmware updated. An outdated firewall is one of the easiest ways in for attackers.

Switches and cabling

Use managed switches. They let you set up network zones and see what’s plugged in where.

Wire anything that doesn’t move. Wired is faster and more reliable than Wi-Fi. Label your cables and network ports while you’re at it. It sounds fussy, but it saves hours when something breaks.

And please put the gear in a locked, ventilated closet or rack. Under a desk is not a server room.

Wi-Fi is mostly about placement

Most Wi-Fi complaints aren’t really about speed. They’re about placement. One consumer router in a corner won’t cover an office. Business-grade access points mounted on the ceiling will, as long as someone plans coverage for boardrooms and meeting rooms where everybody connects at once.

Use WPA3 or WPA2 security, the minimum the Cyber Centre’s baseline controls recommend, with a strong passphrase. Clients and visitors should get a separate guest network that can’t reach your internal files.

Split the network into zones

This is the part most small offices skip, and I think it’s the most useful thing on this page. Network segmentation means dividing your network into separate zones, usually with VLANs (virtual networks), so devices only talk to what they need.

A typical small office setup we’d build has a staff network for your team’s computers and laptops, a server and storage zone for file servers and backup devices, guest Wi-Fi that gets internet and nothing else, and a devices zone for printers, cameras, door access, smart TVs and phones.

Why bother? If a cheap camera or a visitor’s laptop gets compromised, it can’t easily reach your client files. The Canadian Centre for Cyber Security’s Baseline cyber security controls for small and medium organizations says guest Wi-Fi should never connect to your internal network or resources like printers, and that internal Wi-Fi should be isolated from the rest of the network by a firewall.

Remote staff and more than one office

Lots of GTA firms have people at home, at client sites or spread across offices. A property management company might have staff in Toronto and Richmond Hill.

You can handle that with a secure VPN, cloud file access through Microsoft 365, or site-to-site connections between offices. Which one fits depends on where your files live and how your team works. Honestly, there’s no one-size answer here.

Watch it and write it down

Even a well-built network needs looking after. We use NinjaOne to monitor devices and keep them patched, so problems get spotted early instead of when someone calls to say the internet is down.

Documentation is the boring bit everyone skips. Keep a simple network diagram and a list of devices with models and warranty dates. Store admin logins in a password manager, not on a sticky note on the side of the firewall. Keep your internet provider’s support number handy too, since you can’t look it up when the internet is down.

Get a plan before you buy hardware

Whether you’re moving offices or living with a network that grew on its own, I’d much rather help you plan it than help you untangle it later.

Book a free 30-minute call with Midas Tech. We’ll talk through your current setup and send you a written fix-first list with the changes that will make the biggest difference.

Book your free 30-minute call or call us at 1-905-787-2038.