Internet
Which internet providers serve a San Francisco office
Seven providers reach San Francisco offices. Business service runs $60 to $900 per month, and the fastest of them can be working in nine days.
The date is not set by the provider. It is set by whether your building is already on a network, and by a signature only the landlord can give.
Figures compiled 7 September 2026 from each provider’s own pages. Where a provider publishes no number, this page says so.
The seven
In the order they can have a twelve-person office working.
Monkeybrains
$75–$900 per month
Fixed wireless, rooftop radio to rooftop radio
Says it can likely serve any business in San Francisco or Oakland, but publishes its coverage map as an approximation and reviews every address by hand. Needs a clear line of sight, which Twin Peaks and Bernal Heights can break.
What it costs
From $75 per month for one to five people at up to 100 Mbps, from $300 per month up to 50 people at 25–200 Mbps, from $900 per month above that. Install $150.
What will delay you
The building's management has to permit a rooftop radio. Monkeybrains says it will help ask.
Install: Nine days or less, survey to working line
Contract: None. Month to month.
Monkeybrains, as published, 7 September 2026
Google Fiber Webpass
$100–$250 per month
Fixed wireless into the building, fibre behind it
Listed for San Francisco and address-specific. Either the building is already on the network or it is not, and a tenant cannot change that alone.
What it costs
$100 per month for 1 Gbps symmetric, $250 per month for 2 Gbps symmetric. Router and up to two mesh extenders included.
What will delay you
The property manager must sign an access agreement before a survey can even be booked. That signature, not the install, is the wait.
Install: not published by the provider
Contract: Not stated for the business plans.
Google Fiber, as published, 7 September 2026
AT&T Business Fiber
$60–$285 per month
Fibre to the premises where it is built, copper or wireless where it is not
AT&T states plainly that fibre is available in parts of San Francisco and that a business may qualify depending on location. Where it is not built, the substitute is a dedicated circuit or fixed wireless at around 100 Mbps.
What it costs
Published tiers from $60 per month at the entry speed to $285 per month for up to 5 Gbps, before any bundle discount. National rate card, and it applies here.
What will delay you
Whether fibre reaches the address at all. If it does not, you are buying a dedicated circuit instead and the lead time changes entirely.
Install: not published by the provider
Contract: No annual contract stated for standard Business Fiber.
AT&T Business, as published, 7 September 2026
Comcast Business
$70–$220 per month
Cable, with dedicated fibre quoted separately on request
The broadest footprint on this page. Pricing is published nationally rather than for San Francisco, so treat it as typical rather than local.
What it costs
$70 per month up to 300 Mbps, $150 per month up to 1.25 Gbps, $180 per month up to 2 Gbps. The five-year price lock adds roughly $40 per month and a one-year contract.
What will delay you
Cable is shared, so the upload speed is a fraction of the download. Dedicated Comcast fibre is a different product at several times the price.
Install: not published by the provider
Contract: One year for the price-locked tiers.
Comcast Business, as published, 7 September 2026
Sonic
Quoted, not published
Its own fibre where built, DSL where not
Built out across San Francisco neighbourhood by neighbourhood from 2016, and says itself that fibre is not an option at every address. No source confirms Sonic fibre inside any particular office building.
What it costs
Business fibre is quoted by an account executive after a site survey. Only the residential price is public, so we do not print one. New business fibre carries an offer of up to three months free.
What will delay you
A site survey decides both the price and the date. Ask for both in writing.
Install: not published by the provider
Contract: Not published. The business service is quoted with a 99.99 percent uptime commitment.
Sonic, as published, 7 September 2026
Zayo and Lumen
Quoted, not published
Dedicated metro fibre into buildings already on their network
Carrier-grade, and only if your building is already lit. Neither publishes which San Francisco buildings those are.
What it costs
Quote only, through a sales engineer. This is what a company buys when it needs a guaranteed circuit rather than a fast one.
What will delay you
If the building is not already on the network, someone has to build into it. That is the longest lead time of anything on this page.
Install: not published by the provider
Contract: Typically multi-year. Not itemised publicly.
Zayo, as published, 7 September 2026
Astound Business
Quoted, not published
Cable on the legacy Wave plant at the entry tier, its own fibre above it, dedicated fibre above that
Names the Bay Area as a service region and keeps its own office at 660 3rd Street, but publishes no San Francisco business page and no statement that it serves San Francisco offices. Which of its three tiers reaches an address is answerable only by its own address checker. Ring it for a quote, and do not assume it before the checker says so.
What it costs
Every business price is behind an address lookup or a quote form. The only monthly figure Astound publishes is an infrastructure fee of up to $21.85 per month, added on top of a base rate it does not print. A static IP is $19.95, once.
What will delay you
The entry tier is cable, so the upload speed is a fraction of the download, and Astound says installation may need a new outlet. Its middle fibre tier carries no service level agreement; only the dedicated tier does.
Install: not published by the provider
Contract: States no contract for standard Internet. No term is published for the dedicated tier.
Astound Business, as published, 9 September 2026
The order
Internet is the long pole of an arrival. Start it at signature, not at move-in.
Before you sign, ask the landlord which providers are already in the building
The question is which providers have equipment in the riser or on the roof today. A building already served turns on in days; a building that is not can take months. This is a question about the lease, not about internet.
The same week you sign, put the access agreement in front of the property manager
Google Fiber Webpass cannot book a survey until a manager signs, and Monkeybrains cannot mount a radio without permission. Neither provider controls how long that signature takes, and it is the step founders discover last.
Check availability at the suite address, not the street
Every provider on this page checks by address, and two of them say their own coverage maps do not guarantee service. A neighbourhood answer is not an answer.
Order a second line if the first has a survey in it
Fixed wireless can be working in nine days, which makes it a usable bridge while a fibre circuit is provisioned. Month to month with no contract is what makes that affordable.
By neighbourhood
How likely it is that somebody already reaches the building.
This is the most a neighbourhood can tell you. Availability changes inside a single postcode, and two of the seven providers say their own coverage maps guarantee nothing.
Several providers reach these buildings already, so the order is usually paperwork rather than construction. Ask which providers are in the riser before you sign.
Some buildings were rewired with fibre and the one next door was not. Nothing useful can be said here without the exact address, including by us.
Commercial investment is arriving and so is the infrastructure, but availability and the kind of line on offer still change from building to building.
Fewer providers and less mature fibre, so assume a longer lead time and get the date in writing before the lease is signed.
Grouped as published. HighSpeedInternet.com, as published, 7 September 2026. A comparison house rather than a provider, which is why it is named.
Not published
Four things every comparison site prints and we will not, because no provider publishes them.
- Which providers serve a named building. No provider publishes a building list for San Francisco, and a guess would be worse than a blank.
- A current share of the city covered by any one provider's fibre. The only such figure we found is from 2018.
- Sonic, Zayo, Lumen, and Astound business prices. All four are quoted after a survey or an address lookup, and none is public.
- Install lead times for AT&T, Comcast, Sonic, Zayo, Lumen, and Astound. None of them publishes one.
Comcast and AT&T publish national rate cards rather than San Francisco ones. Those figures are typical here, not local to here, and this page does not pretend otherwise.
We take it
Internet is the third of the ten Services. Tell us the neighbourhood, the arrival date, and the headcount, and the Dossier dates the install against your own move.