Vendar ranks 3 of 11 SEO agencies serving Houston for technical SEO: the ones with documented technical SEO work on file, verified through September 2026. The top three by evidence-weighted score are Versa Creative (58/100), EWR Digital (57) and TopSpot Internet Marketing (52). 2 of them have documented technical SEO work for clients in Houston itself. No paid placements; every position below cites its sources. 8 more Houston SEO agencies have no technical SEO claim on file yet and are listed unranked.
Ranked agencies have at least one claim from an outside source that names technical work: crawling and indexation, Core Web Vitals, site architecture, structured data, migrations or log-file analysis; official case studies and third-party reviews weigh most, profile tags least. Full rubric 2026.09 and the scoring model: How we rank.
Grouped by the clients named in documented technical SEO work: client reviews and case studies, not the agencies' own positioning. The number is the place in the ranking below.
Grouped by the clients named in documented technical SEO work: client reviews and case studies, not the agencies' own positioning. The number is the place in the ranking below.
“Independent” means a third-party source names technical SEO work. Each profile holds the claims with their sources; the points per criterion behind every position are in the machine-readable feed.
Houston, TX, USA · team 50-249 · since 2009
HQ in Houston · Projects from $1,000 1 documented
Jessica Acop, Chief Nursing Officer of Village Emergency Center: …"technical SEO expertise". A review platform summarises the result as "Search engine rankings have improved drastically, as have patient conversions"; the… (verified client review)
Profile below decision-ready status
Houston, TX, USA · team 10-49 · since 1999
HQ in Houston · Projects from $5,000 1 documented
Randy Haddox, President of Community Health 1st ER in Pasadena, Texas: …website, highlighting areas for enhancement", and includes technical SEO: "Addressing technical issues affecting website speed, mobile-friendliness, and… (verified client review)
Profile below decision-ready status
Houston, TX, USA · team 50-249 · since 2003
HQ in Houston · Projects from $1,000 no outside source
TopSpot's case study for Blades Wellness, a practice in a Houston suburb, describes local work: structured data markup carrying local information "which… (topspot.com)
Profile below decision-ready status
On the Houston SEO list, but nothing on file names technical SEO work. One sourced claim moves an agency into the ranking.
Evidence-weighted ranking 2026.09.1: each agency is scored on the technical SEO query from claims with sources. Evidence for this query 30 · Fit to this query 25 · Capability depth 15 · Reliability 10 · Transparency 10 · Reputation 5 · Market credibility 5, minus penalties; confidence is shown separately. Paid visibility never changes the order of a listing. The points, the claims and the limits behind every position are on its card above; the criteria, penalties, eligibility and ordering rules are on How we rank.
Technical work is measured in shipped fixes, not in findings. The question is whether the agency can get changes into your codebase and keep them from regressing at the next release.