A small office network doesn't need to be complicated. It does need to be deliberate. Most of the problems people live with — slow file access, Wi-Fi that drops in the conference room, a printer that disappears every few weeks — come from networks that grew one device at a time without a plan.
This checklist walks through the pieces almost every small office needs, what each one is for, and the questions worth asking about yours. Use it to take stock of what you have, or as a starting point before setting up a new space.
1. An internet connection that fits how you work
Start with how your team actually uses the internet. An office that lives on video calls and cloud apps needs more than one that mostly sends email. Upload speed matters as much as download if you share large files or back up to the cloud.
- Do you know your plan's download and upload speeds?
- What happens to the business if the connection goes down for a day? If the answer is "we stop working," a backup connection is worth discussing.
- Who owns the account with your provider, and who has the login?
2. A router and firewall you control
The router connects your office to the internet; the firewall decides what's allowed in and out. In many small offices, both are a single box supplied by the internet provider and never touched again. That can be fine, but you should know what it is and who can manage it.
- Has the default admin password been changed?
- Is the device still receiving firmware updates from its manufacturer?
- Is anything in the office exposed directly to the internet — remote desktop, a camera system, a file server — and does it need to be?
3. Switches with room to grow
Switches connect the wired devices in your office: computers, printers, access points, phones. A common pattern is a small switch added under a desk whenever the office ran out of ports, until nobody knows which cable goes where.
- Is there spare capacity for new staff or equipment?
- Are your switches in one sensible place, or scattered around the office?
- Do they support network segmentation (VLANs) if you decide to use it?
4. Wi-Fi designed for the space, not just the router
Wi-Fi coverage depends on walls, floors, distance, and how many people are connected at once. A single powerful router in the corner rarely covers an office evenly. Business-grade setups usually use several access points placed where people actually work, managed together.
- Are there rooms where calls freeze or connections drop?
- Is there a separate guest network, so visitors never share the network your business systems are on?
- Do you know where your access points are and how they're managed?
If Wi-Fi is your main frustration, our guide Is your Wi-Fi the problem? covers how to tell what's actually wrong.
5. Segmentation: not everything on one network
In a "flat" network, every device can see every other device: staff laptops, the guest's phone, the printer, the security cameras, the smart TV in the waiting room. Segmentation separates these into groups that only talk to each other when they need to. It improves security, because a compromised device can't easily reach everything else, and it makes problems easier to trace.
For a small office, a sensible starting point is often three groups: staff devices, guests, and "things" like printers and cameras. Whether you need more depends on your business.
6. Documentation someone else could follow
This is the item most offices skip, and the one that hurts most later. If the person who set up the network left tomorrow, could someone else manage it?
- A simple diagram of what connects to what.
- A list of network equipment with model, location, and how it's managed.
- Where the admin credentials are stored, and who has access to them.
- Your internet provider's account details and support contact.
It doesn't need to be fancy. One shared document, kept up to date, is enough.
7. Power and placement
Network equipment ends up in closets, under desks, or on top of filing cabinets. Wherever it lives, it needs ventilation, protection from being unplugged by accident, and ideally a battery backup (UPS) so a brief power flicker doesn't take the whole office offline.
8. Backup that doesn't depend on the network staying healthy
Strictly speaking, backup isn't part of the network — but the network is often where it quietly fails. A backup drive plugged into one computer, or a server backing up to a device in the same closet, doesn't help if that room has a problem. At least one copy of your important data should live somewhere else. Our cloud backup basics guide covers the essentials.
Using this checklist
Go through each section and mark it as "fine," "not sure," or "needs attention." The "not sure" answers are the important ones: they're the parts of your network nobody currently understands. That's normal for a small office, and it's exactly where problems tend to hide.
If you'd rather have an independent review, a network and infrastructure assessment covers each of these areas and ends with a written plan, ordered by priority, that you or any IT provider can follow.