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Top SEO Companies Houston, TX

businesses screened
524
qualified
67
listed
3

Many Houston SEO agencies list mailbox suites, virtual offices or serviced-office addresses, and the two firms that rank highest for Houston SEO searches don’t name a single person on their sites. This list comes from a review of the SEO agencies we could find in the Houston metro: what they publish, what they’ve proven, what clients say, and how they rank for their own city.

The short answer For industrial and B2B companies, start with EWR Digital. For home-service and local businesses, Illumination Marketing. For ecommerce and manufacturers, OuterBox.

Read all three →

Reviewed by Andrew Eagar, fractional SEO · Reviewed · Next review January 2027

No agency paid to be listed or can pay to change its position. I run a fractional SEO practice, which some businesses hire instead of an agency, so I don't rank myself here. How we reviewed

Side by side

Compare Houston’s top SEO agencies

AgencyBest forStarting priceSEO case studiesGoogle ratingMedian tenureContract
EWR Digital Industrial, energy, B2B, law firms $2,500/mo Several 4.9 (148) 1.5 yrs 6 months or $15K minimum, then 3-month rolling
Illumination Marketing HVAC, roofing, plumbing, local services $2,500/mo Several 5.0 (49) 7.6 yrs 6 months, then month-to-month
OuterBox Ecommerce, manufacturing, B2B Not published Several 4.8 (198) 2.4 yrs Not published

Prices and terms as published on each agency's site, October 2026. Tenure is the median from LinkedIn company data.

The three

The three agencies, reviewed

Top pickBest for industrial, energy and B2B companies

EWR Digital

4.9 on Google (148) · 5.0 on Clutch (11) · Northwest Houston · Founded 1999

Why we picked them

  • Search Console case studies with starting figures, e.g. a Houston personal-injury firm's clicks rose from 90 to 847 a month in about a year.
  • Named in 12 of 15 AI-assistant answers we tested, and top 10 for 2 of 12 Houston SEO searches we checked, more than any other qualified agency.
  • Published SEO pricing, $2,500 to $7,500 a month for most campaigns, and 148 Google reviews at 4.9.

What clients say

Recent Google reviewers mostly praise strategy calls with the team; Clutch reviewers credit better rankings. We went from NEVER getting clicks, to all of a sudden 38 clicks — Nolen D., Google, 2025

Watch-outs

Most campaigns cost $2,500 to $7,500 a month, and new clients sign a 6-month agreement or pay a $15,000 minimum, then roll quarterly. Five of its nine Google reviews from the past year come from prospects praising a free consultation, not clients. Its site says it is "Rated Top 10 % of all SEO agencies in US" with nothing to support it. LinkedIn headcount is up 77% in two years, with a median tenure of 1.5 years.

2 · Home-service and local businesses

Illumination Marketing

5.0 on Google (49) · No Clutch reviews · Vintage Park (mailbox-style suite) · 4 on LinkedIn

Why we picked them

  • Published SEO packages from $2,500 a month, with monthly reporting and a live ranking dashboard.
  • Case studies with starting figures, e.g. a turbine-repair firm's ranked keywords rose from 148 to 462 in six months.
  • 49 Google reviews at 5.0, 10 of them from the past year.

What clients say

Reviewers credit them with better rankings and more leads, and praise their responsiveness. his expertise in SEO has made a noticeable impact on our online visibility — Mike H., Google, 2026

Watch-outs

Its only address is a mailbox-style suite in Vintage Park, about 18 miles northwest of downtown; the founders are local. New clients sign a 6-month initial agreement. Five Google reviews arrived about six months ago, three of them star-only, and its Clutch profile has no reviews. The site calls it Houston's best marketing company, and most case-study figures have no calendar dates.

3 · Ecommerce brands and manufacturers

OuterBox

4.8 on Google (198) · 5.0 on Clutch (93) · Uptown · 356 on LinkedIn (company-wide)

Why we picked them

  • Named in 12 of 15 AI-assistant answers we tested, 11 of them under TopSpot, the name of its Houston office until 2024.
  • 93 Clutch reviews at 5.0 company-wide, and 198 Google reviews at 4.8 for its Houston office.
  • Case studies tie SEO to revenue, e.g. an ecommerce client since 2022 grew organic revenue 17% year over year.

What clients say

Long-standing industrial clients from the TopSpot years praise the relationship; Clutch reviewers credit leads and return on spend. OuterBox has improved our website and organic traffic. — Jeani L., Google, 2026

Watch-outs

A national firm headquartered in Ohio; its Houston office is the former TopSpot Internet Marketing, acquired in 2024. No published prices or contract terms. Two Google reviews from the past year complain of billing with no work to show, one describing a decline since the acquisition. Clutch reviews arrive in bursts (20 in July 2025), and it publishes "best agencies" lists that rank itself first.

Free agency audit

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Sample scorecard
Scope vs. delivery
B
Results vs. spend
C
Work quality
C
Reporting
D
Ownership and risk
A

Verdict: Fix

Illustrative example, not a real client.

First-party data

The Houston SEO market in numbers

27%
publish their pricing
43%
show SEO case studies with real numbers
4%
rank top 10 for their own Houston searches
5 of 67
get named by AI assistants for Houston SEO
Published SEO prices start at a median of $775 a month Lowest published monthly SEO plan, for the 18 of 67 qualified agencies that publish one

Teal: agencies on this list. Grey: other qualified Houston agencies (not named).

Only 18 of Houston's 67 qualified agencies publish a monthly SEO price, and just three rank in the top 10 for their own Houston SEO searches.

Before you sign

What we saw that you should watch for

None of these rules an agency out on its own, but each is worth a question before you sign.

  • "Houston" addresses that are mailboxes At least 40 agencies we screened list Houston-area addresses in mailbox suites, virtual offices or serviced-office buildings, and some have teams overseas or in other states. Ask where the people doing your work are based.
  • Bought and sold links At least ten agencies we screened sell links, from monthly guest-post quotas to "buy backlinks" packages. Paid links break Google's guidelines; ask how links are earned.
  • Ranking guarantees At least six agencies we screened promise rankings, from first-page results within 120 days to a #1 position. No agency controls Google's results, and we excluded every agency that promises them.
  • Top rankings, no names The two agencies that rank in the top 10 for the most Houston SEO searches we checked, 11 and 10 of 12, don't name anyone on their sites. Ask who will actually work on your account.
  • AI-assistant shortlists Of the 30 agencies AI assistants named in the 15 answers we tested, 5 passed our screen. The three named most often after our picks failed it: one sells links, one guarantees first-page results, and one hasn't published anything since March 2025.
  • "Best agencies" lists written by an agency Several Houston agencies publish lists that rank themselves first, including one of our picks. Check who wrote a list, this one included.
  • Review bursts Some agencies collect many reviews in a short burst, and one Google review we read appears to come from the agency's own staff. Read what reviews describe and when they were written, not just the average.

Method

How we reviewed

Every agency went through the same three rounds, each looking harder at fewer agencies.

  1. Screen. Names SEO as a service, has a Houston-area office, active in the last 12 months, names real people, has client reviews. Guaranteed rankings or paid link schemes rule an agency out.
  2. Qualify. Proof of results, rankings for their own Houston searches, reputation, transparency, SEO depth and awards.
  3. Deep dive. For the top 10: review text, team stability on LinkedIn, and 15 AI-assistant answers.

No agency paid to be included, and none was contacted. We re-check each quarter. Send a correction · Full methodology

Three of 524 made the list

Found in Houston524

Offer SEO246

Passed the screen67

Deep-dive finalists13

Listed3

FAQ

Questions, answered

How much does an SEO company cost in Houston?

Among agencies that publish a price, monthly SEO plans start between $79 (a plan for nail salons) and $10,000 (a multi-channel bundle), with a median of about $800. Most agencies quote after a call.

How do I choose an SEO agency in Houston?

Ask for case studies with real numbers from businesses like yours, the contract length and exit terms, and who will do the work. Check whether the team is actually in Houston.

Do I need a Houston-based SEO company?

Not necessarily, but many firms with a Houston address are mailboxes or work elsewhere. If local knowledge matters to you, confirm where the team is.

Is SEO still worth it with AI search?

Yes. In our tests, AI assistants named just 5 of Houston's 67 qualified agencies, and most of the firms they did name didn't make our qualified list. Check an AI shortlist the way you would a search result.

Is hiring an agency my only option?

No. Many businesses hire a fractional SEO instead: one senior specialist working directly on the account, with less overhead.

Photo of Andrew Eagar

About the reviewer

Andrew Eagar

Andrew Eagar has worked in SEO since 2008. He has been Director of SEO at four agencies, built SEO departments from the ground up and led teams of more than 20 SEOs, on brands including Twitter, Amazon, S&P Global, PGA Tour, Allstate and Seagate. He has contributed to Moz and Clutch, and today runs The Fractional SEO in Virginia. LinkedIn