Vendar ranks 3 of 11 SEO agencies serving Houston for local SEO: the ones with documented local SEO work on file, verified through September 2026. The top three by evidence-weighted score are Red Houston SEO Company (67/100), TopSpot Internet Marketing (65) and EWR Digital (54). 2 of them have documented local SEO work for clients in Houston itself. No paid placements; every position below cites its sources. 8 more Houston SEO agencies have no local SEO claim on file yet and are listed unranked.
Ranked agencies have at least one claim from an outside source that names local-search work: Google Business Profile or map-pack results, service-area pages, local citations or multi-location programs; 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 local 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 local 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 local 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 2-9 · since 2016
HQ in Houston · Projects from $1,000 2 documented
Alonzo Monroe, Event Manager at Houston Fringe Festival: …"The team has set up the client's Google Business Profile and focused on location-specific terms to capture local traffic. Red Houston SEO Company has… (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
…the Houston area", so the team enabled the business's Google My Business, Bing Business and Apple Maps listings to make it findable in local searches… (topspot.com)
Profile below decision-ready status
Houston, TX, USA · team 10-49 · since 1999
HQ in Houston · Projects from $5,000 no outside source
EWR Digital's own case study for Cajun Encounters, a New Orleans swamp-tour operator, describes local SEO work aimed at the local 3-pack for "Swamp Tour… (ewrdigital.com)
Profile below decision-ready status
On the Houston SEO list, but nothing on file names local SEO work. One sourced claim moves an agency into the ranking.
Evidence-weighted ranking 2026.09.1: each agency is scored on the local 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.
Local results turn on the profile, the service-area pages and the reviews behind them. An agency that treats those as three separate projects will move rankings slowly and calls not at all.