Seattle is one of the more competitive business internet markets on the west coast. Comcast Business has the dominant cable footprint. Astound Broadband (formerly Wave) has a real fiber overlap in the city. Ziply Fiber rebuilt fiber across much of the metro. CenturyLink (now Lumen) is on most blocks. T-Mobile is headquartered in the metro and has strong 5G coverage.
The pricing problem in Seattle is the same as in most of the country. Most businesses default to Comcast, never quote the other four, and pay 30 to 50 percent above the new-customer rate within two years of signing.
Seattle's commercial spine
Seattle's commercial demand sits in three places. Downtown Seattle holds the legal, financial, and government corridor that anchors the metro's daytime workforce and the bulk of its Class A office tower stock. South Lake Union, the redeveloped technology and life-sciences district north of downtown, has filled in over the past two decades with corporate-tech, biotech, and academic-medical tenancy. SODO, the industrial and adaptive-reuse zone south of downtown, anchors a deep concentration of logistics, light-manufacturing, and creative-office tenants alongside the city's stadium district. Amazon, with its first global headquarters in the Puget Sound region and a major Seattle campus, and the University of Washington's Seattle campus are two of the largest commercial accounts in the metro and drive heavy enterprise telecom demand.
On February 2, 2026, AT&T said closing its acquisition of Lumen's mass-market fiber business added major metro areas including Seattle to AT&T's fiber footprint, materially shifting the carrier mix in a market that has been Comcast and CenturyLink-dominated for years. One pricing wrinkle: Seattle businesses in districts such as Downtown and SODO often carry Business Improvement Area assessments because the city uses BIAs as a formal funding mechanism for district services, and those assessments are commonly passed through in commercial leases.
What you should be paying
These are dedicated internet ranges from current carrier wholesale data, marked up to typical retail.
Seattle dedicated internet, typical retail (mid 50%)
Monthly recurring charge, dedicated internet access (DIA). Numbers are derived from current carrier wholesale quotes.
| Speed | Typical retail (mid 50%) | Sample size |
|---|---|---|
| 100 Mbps | $660 – $800/mo | n = 1 |
| 500 Mbps | $955 – $1,160/mo | n = 1 |
If your bill sits above the high end of the band, you are likely overpaying.
Analyze My Bill FreeFor Comcast Business coax at 600 Mbps, the fair price is $150 to $230 a month for a single office. For Ziply Fiber at 1 Gbps, expect $130 to $200 a month, which is one of the better headline rates available in the metro.
For T-Mobile Business Internet, the published rate is $85 a month for 200 to 300 Mbps fixed wireless.
Carriers worth quoting in Seattle
Six carriers cover most addresses in the metro.
- Comcast Business. Coax everywhere, fiber in select buildings.
- Astound (Wave) Business. Strong fiber and coax footprint in Seattle proper and on the eastside.
- Ziply Fiber Business. Aggressive on price, strong in the suburbs and parts of north Seattle.
- CenturyLink (Lumen). Fiber where they have rebuilt, copper elsewhere.
- T-Mobile Business Internet. $85 a month for 200 to 300 Mbps. Useful benchmark.
- Crown Castle Fiber. Common in downtown commercial buildings.
If you have not had three of these on a quote sheet, you have not run a real comparison.
What to do this week
- Pull your most recent invoice. Find the contract end date and the side fees.
- Get one quote outside Comcast. Ziply Fiber publishes most rates online and is the fastest benchmark.
- Compare your base rate to the bands above. If you are 20 percent above the high end, the retention call is worth making.
See where your Seattle bill sits against current rates
Upload your latest business internet invoice. We will run it against Seattle carrier wholesale data and flag the side fees that should not be there.
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