Updated October 2026 · For property managers and businesses planning a move or upgrade
Fiber is one of the best connections a commercial building can have, but it is rarely instant. Installation time depends on whether fiber already reaches the building, how far new fiber has to run, and the permits required along the way.
Here is what to expect, step by step, and how to avoid waiting offline.
- If fiber is already in the building, service can be live in a few weeks.
- New construction to reach a building often takes 30 to 120 days or more.
- Permits, easements and building access are the most common delays.
- Fixed wireless can get you online in days while fiber is built.
Typical Fiber Installation Timelines
| Situation | Typical timeline |
|---|---|
| Fiber already lit in the building | 2 to 4 weeks |
| Fiber nearby, short build needed | 30 to 60 days |
| New underground or aerial construction | 60 to 120+ days |
| Major permits or easements required | Several months |
The Steps in a Fiber Installation
- Site survey and availability check.
- Engineering and route design.
- Permits from the city, county or property owner.
- Construction: underground boring or aerial installation.
- Building entry and inside wiring to your suite.
- Testing and service turn-up.
What Causes Delays
- Waiting on permits or right-of-way approvals.
- Landlord approval for building entry and riser access.
- Weather and ground conditions for underground work.
- Coordinating multiple carriers and building owners.
How to Speed Up Your Fiber Installation
- Start early: request availability and pricing as soon as you sign a lease.
- Get landlord approval for building entry and riser access in writing.
- Provide accurate floor plans and the location of your equipment room.
- Name one contact who can approve access for surveys and construction.
- Ask the provider for a written timeline with milestones.
Questions to Ask Before You Sign
- Is fiber already in the building, or is construction required?
- What is the estimated install date, and what could delay it?
- Are there one-time construction or installation charges?
- Is the service dedicated or shared, and what is the SLA?
- What temporary or backup options do you offer until fiber is live?
Planning a Move or New Location
If you are relocating, treat internet like any other critical utility. Many businesses set a fiber order in motion 90 days or more before move-in, then use fixed wireless or 5G to open on time if construction runs late. Planning the network early also lets you design cabling and Wi-Fi for the new space before furniture arrives.
How to Get Online Faster
You do not have to wait months to open. fixed wireless can be installed in days and deliver fiber-class speeds, then stay on as automatic backup once fiber is live. Cronus also offers 5G SD-WAN for temporary or backup connectivity.
Need internet before fiber arrives?
Cronus can connect your building in days and plan your fiber upgrade.
Frequently Asked Questions
How long does fiber installation take for a business?
If fiber is already in the building, a few weeks. If new construction is needed, typically 30 to 120 days or longer depending on permits.
Why does fiber installation take so long?
Most time goes to engineering, permits and construction to reach the building, not the final hookup.
Can I get internet while waiting for fiber?
Yes. Fixed wireless or 5G can be installed in days and later serve as backup to fiber.
