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San Francisco
SEO Agency
that ranks where buyers search.

We are a San Francisco SEO agency that ranks your business across the Bay Area on Google and inside AI search. One team handles both, because the work that gets you ranked on Google is the same work that gets you cited inside ChatGPT and Gemini.

Talk to your SF SEO team →
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You came here for a San Francisco SEO agency. We rank your business in Google, on the local map, and inside the AI tools your Bay Area buyers are asking. That is the work.

Why hire us

Three reasons SF founders work with a San Francisco SEO agency.

Pipeline you can measure. An asset that compounds. A new channel most Bay Area founders are not chasing yet.

01 / 03

Pipeline from search, not vanity traffic.

We find the queries your SF buyers type when they are ready to spend money. Then we build the pages that win those queries. You get qualified leads from Google, not impressions.

Buyer-intent queries Bottom-funnel pages Qualified leads Bay Area buyers
google · search
YOU
Search
AI
Top result
yourcompany.com
02 / 03

The only channel that compounds.

Ads stop the day you stop paying. Rankings hold. The pages we build keep ranking, keep getting cited, and keep sending leads long after the work is done. Every month the cost per lead goes down.

Owned pages Compounding ranking Lower CAC Long-term equity
Cost per lead Lower wins
Paid ads $$$$ Every month. Forever.
SEO, as it compounds $ Same page. Drops further as it keeps ranking.
A fraction of paid, every month it runs
03 / 03

Be the company AI recommends.

Your buyer asks ChatGPT or Perplexity for the best company in your category, and gets one answer. We make sure that answer is you. The same pages that rank in Google get cited by AI, with the right structure on top.

ChatGPT citations Perplexity Google AI Overviews AI-first answer
AI engines Cite you
ChatGPT recommends your company
Perplexity cites your pages
Google AI surfaces your answer
Compounding

Your rankings compound like the S&P 500.

You do the work once. Buyers reach you again, and again, and again. The line bends up while the cost bends down.

Compounding curve · illustrative
Organic
Why it matters

Why this matters for your bottom line.

You stop renting attention. You start owning it.

01

You own the channel.

Ad accounts belong to Google. Rankings belong to you. Cancel us tomorrow and the pages keep ranking.

02

Your leads stop disappearing.

Referrals dry up. Ads spike when budget spikes. Search delivers buyers every week, the same week, no spend reset.

03

Your cost per lead drops.

The pages we ship in month one are still ranking in year three. Same lead, lower cost, every month.

By the numbers

Results from clients we've worked with.

Traffic pulled from Google Search Console and Ahrefs. Revenue reported directly by the businesses.

0+
Combined years of experience in SEO, GEO & growth
0/5
Google & Clutch verified rating across reviews
0%
Average organic traffic growth across client engagements
SF Case Study

The flagship SF proof. One client. Two numbers.

Hedra is an SF AI company building LLM-generated video. Engagement ongoing.

Hedra · San Francisco, CA ENGAGEMENT ONGOING

Doubled revenue from Google. Quadrupled it from AI search.

4.8K2.5K5000
Jul 25Nov 25Feb 26May 26

Revenue from Google search +123%. Revenue from ChatGPT and Gemini +354%. 5-year Ahrefs organic traffic reversal. 18 pages per month, every month, ongoing. The flagship proof that the system works in the most competitive search market in the world.

Read the Hedra case study
Reviews

Trusted by the founders we work with.

Google-verified reviews from the businesses we've helped.

★★★★★
"Working with The 66th has been a game-changer. They executed as planned and increased our revenue by 25% in three months."
Andrew Crookshank
Andrew Crookshank
Co-founder of Bilo Media Ad Agency
★★★★★
"Since working with The 66th team, the difference has been night and day. They've helped me achieve actual results."
Anastasiia Romaniv
Anastasiia Romaniv
Founder of Eightstation.com
★★★★★
"Liam and his team did my SEO and generative engine optimization. They were incredible. You will not be disappointed."
Clare Howard
Clare Howard
Founder of Maison Rouge
★★★★★
"Working with this team has been a game-changer for us as a business. What really impressed us is how they've supported 044BUREAU in every aspect."
044 Bureau
044 Bureau
Founders of 044bureau.com
★★★★★
"Within the first month, they increased our clients' organic traffic by 32%. Our clients' conversion rates improved by 18% through their technical optimizations."
Victor Klinkera
Victor Klinkera
CEO and Founder of RCM
★★★★★
"Liam helped grow our online presence tenfold and increased our sales by over 140% in less than six months. I strongly recommend The 66th!"
Shawn Lytton
Shawn Lytton
President of Maple Terroir
Process

How we get you found on Google and recommended by AI.

01
03
STEP 01

We map your market.

We pull every search your SF buyers run and every page your competitors rank for. You get the list before we touch the site. You know what we will build, why, and what each page is worth in pipeline.

the66th / audit.01
Google Rankings
+47%
AI Visibility
18%
STEP 02

We build and ship.

New pages, fixed pages, links, reviews. Every week you see what we shipped, what moved, and what is next. No black box. No monthly recap slide deck. Just the work, on the site, ranking.

Technical audit resolved● COMPLETE
Schema & structured data● COMPLETE
Bottom-funnel pages built● COMPLETE
AI citation sources seeded○ IN PROGRESS
Backlink campaign○ QUEUED
STEP 03

We compound.

Rankings hold. AI citations stack. Buyers land on pages built to convert, not just to rank. We keep shipping. The curve bends up, and the cost per lead bends down.

ORGANIC TRAFFIC · 6 MOS +675%
AI visibility

Why an SF SEO agency has to win AI search too.

Most Google searches now end without a click. Your SF buyer asks ChatGPT or Perplexity instead. If you are not in the answer, you are not in the consideration set. We build for both.

ChatGPT
Claude
Perplexity
Gemini
Google AI
Copilot
Your Brand Cited 312× last 30d
Who we work with

SF startups, from pre-seed to Series C.

If your buyers Google or ask ChatGPT before they sign, we can help.

01
AI & ML startups
You compete with companies that raised more than you. We make sure when your buyer searches for the best AI tool in your category, your name shows up first in Google and in ChatGPT. If you came through Y Combinator, see our dedicated SEO for YC startups San Francisco page.
02
B2B SaaS
Long sales cycles start with a Google search. We rank the pages your buyer reads at every stage, from "what is" to "best" to "vs."
03
Fintech & payments
Trust is the whole game. We build the search presence that makes you the obvious, credible choice when a founder or CFO is comparing options.
04
Dev tools & infra
Developers Google before they buy. We get your docs, comparison pages, and integration guides ranking for the searches your users actually run.
05
Healthtech & biotech
Regulated industries with technical buyers. We rank you for the specific terms your customers search, and keep the content compliant.
06
Agencies & pro services
Lawyers, consultants, creative shops. Your client Googles before they call. We make you the obvious choice in the results and in the AI answer.
What you get

What you get from a San Francisco SEO agency.

Four things, all bundled, no upsells.

01

Revenue, not vanity traffic.

You get rankings for the searches your Bay Area buyers actually type. Hedra doubled revenue from Google and quadrupled it from AI search with this system.

02

AI search baked in.

You get AI citations inside ChatGPT, Perplexity, and Google AI Overviews. Most SF agencies sell this as an add-on. We bundle it because it is a byproduct of doing the foundation right.

03

Your Google profile, fixed.

Your Google Business Profile set up the way local search rewards now. Reviews working as the trust signal Google leans on hardest.

04

Senior people, every call.

Liam runs SF strategy directly. No account managers, no offshore writers. If you want an advisor-only engagement, see the San Francisco SEO consultant page.

Reach us anytime

Two ways to start. Pick whichever is easier.

Option 01, fastest start 30min

Book a strategy call directly.

Pick a time on Liam's calendar. Free 30-minute look at where your SF business is ranking now, where the Bay Area opportunities are, and what we would do first.

Open calendar →
Option 02, written brief

Send a written message.

Tell us what your SF business is trying to rank for, what is not working, and what your existing channels look like. We come back within one business day.

✓

Message received.

We will reply within one business day from liam@the66th.com.

Replies within one business day. No spam, ever.
Start today

Ready to be the SF business buyers find first?
Let's talk.

Talk to your SF SEO team → liam@the66th.com
FAQ

Questions about SF SEO.

Bay Area founders, ask away.