Soil & Rock Consultants vs Tonkin + Taylor:Which is more popular?
In September 2026, Tonkin + Taylor had more branded searches than Soil & Rock Consultants among geotechnical consultancies in New Zealand. Tonkin + Taylor had about 3,610 branded searches, while Soil & Rock Consultants had 140. Tonkin + Taylor made up 78% of all geotechnical consultancy searches we track, and Soil & Rock Consultants accounted for 3%. When we asked ChatGPT and Google AI Overviews about geotechnical consultancies, Soil & Rock Consultants appeared in three of the five answers and Tonkin + Taylor in two. Soil & Rock Consultants and Tonkin + Taylor were each mentioned first in one of the two answers.
Who do people search for more?
Tonkin + Taylor, about 26 searches for every 1 for Soil & Rock Consultants
Who does AI mention more?
Soil & Rock Consultants, mentioned in 3 of 5 answers, Tonkin + Taylor in 2
Who does AI recommend more?
Each is named first in 1 of 2 answers.
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Top geotechnical consultancies in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Soil & Rock Consultants was mentioned in three out of five: in two of the three ChatGPT answers and in one of the two Google AI Overviews. Tonkin + Taylor was mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. Soil & Rock Consultants and Tonkin + Taylor were each listed first in one of the two answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
ENGEO3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers- Soil & Rock Consultants3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Tonkin + Taylor2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
CMW Geosciences1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Ground Consulting1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Geologix0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about geotechnical consultancies
5 answers
Asked ChatGPT
“Which geotechnical consultancy should I hire in New Zealand?”
Asked ChatGPT
“What are the best geotechnical consultancies in New Zealand?”
Asked ChatGPT
“What's the best geotechnical consultancy in New Zealand for a building site?”
Searched Google, AI Overview
“geotechnical consultants nz”
Searched Google, AI Overview
“ground investigation nz”
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in New Zealand on October 21, 2026.
Is Soil & Rock Consultants or Tonkin + Taylor more popular in search?
This chart shows how often people search Google for Soil & Rock Consultants and Tonkin + Taylor by name. Each line represents a brand's share of searches for all six geotechnical consultancies we track, month by month, from searches in New Zealand.
Share of searches by month for Tonkin + Taylor, Soil & Rock Consultants. The figures are in the table below the chart.
View monthly share of searches table
| Month | Tonkin + Taylor | ENGEO | CMW Geosciences | Soil & Rock Consultants | Geologix | Ground Consulting |
|---|---|---|---|---|---|---|
| Oct 2025 | 79.7% | 10.8% | 5.7% | 1.1% | 1.8% | 0.88% |
| Nov 2025 | 80% | 10.9% | 4.7% | 2% | 1.8% | 0.67% |
| Dec 2025 | 80.6% | 9% | 5.7% | 1.7% | 2% | 1% |
| Jan 2026 | 77.6% | 10.7% | 5.6% | 2.9% | 2.4% | 0.8% |
| Feb 2026 | 80.8% | 9% | 4.8% | 2.6% | 2.2% | 0.73% |
| Mar 2026 | 80.1% | 8.9% | 5.8% | 2.5% | 2.2% | 0.54% |
| Apr 2026 | 78.8% | 10.7% | 5.7% | 2% | 2.3% | 0.53% |
| May 2026 | 73.7% | 12.2% | 7.9% | 2.9% | 2.4% | 0.81% |
| Jun 2026 | 80.3% | 8.7% | 5.8% | 2% | 2.2% | 0.91% |
| Jul 2026 | 82.2% | 9.1% | 3.9% | 2% | 2% | 0.74% |
| Aug 2026 | 86% | 6.2% | 4.1% | 1.4% | 1.7% | 0.48% |
| Sep 2026 | 78% | 10.6% | 5.6% | 3% | 2.2% | 0.65% |
How has the Soil & Rock Consultants and Tonkin + Taylor comparison changed over the last 12 months?
3 findings
- Tonkin + Taylor was ahead of Soil & Rock Consultants in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Soil & Rock Consultants’ share of searches among geotechnical consultancies in New Zealand moved from 1.1% to 3%, and its estimated monthly branded searches moved from 50 to 140.
- Across the 12 months ending September 2026, Tonkin + Taylor’s share of searches among geotechnical consultancies in New Zealand moved from 79.7% to 78%, and its estimated monthly branded searches held steady at 3.6K.
How did search popularity change for New Zealand geotechnical consultancies in September 2026?
2 changes
In September 2026, Soil & Rock Consultants overtook Geologix to rank 4th among geotechnical consultancies in New Zealand, with 3% of the searches.
In September 2026, Tonkin + Taylor lost share of searches among geotechnical consultancies in New Zealand, from 86% to 78%.
How are branded searches counted?
3 search terms
Brandwave collects information about searches that people make online using Soil & Rock Consultants’ and Tonkin + Taylor’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
Soil & Rock Consultants
1 branded search term
- soil and rock consultants
Tonkin + Taylor
2 branded search terms
- tonkin taylor
- tonkintaylor
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