Best Environmental Consultants in Sydney
Compare the top environmental consultants in Sydney, NSW, ranked by our composite reputation score.
Updated October 2026 · Based on 576 real Google reviews across the 71 environmental consultants
Top Environmental Consultants in Sydney, NSW
The short answer
As of October 2026, the 3 highest-ranked environmental consultants in Sydney, NSW on the Starworks directory are Building Harmony Building Biology (5.0 stars from 24 Google reviews), Energi Assessments - BASIX Certifications (5.0 stars from 22 Google reviews) and EnviroX Consulting (4.9 stars from 99 Google reviews).
Starworks ranks 71 environmental consultants in Sydney, NSW, holding 576 Google reviews between them. Across the 71 the median rating is 5.0 stars from a median of 4 reviews. Of the 71, 58 are rated 4.5 or better. The most-reviewed carries 99 reviews, more than the top-ranked environmental consultant holds, which is why rating alone does not set the order.
Every figure here is computed from Google review data that Starworks collects for environmental consultants in Sydney, NSW, recalculated when this page rebuilds. Placement on this list cannot be bought.
Energi Assessments - BASIX Certifications
Read 22 reviews · Score: 73/100
NEO Consulting: Environmental Services for Greater Sydney & NSW
Read 19 reviews · Score: 66/100
Zephyr Environmental
Read 3 reviews · Score: 57/100
Consulting Earth Scientists Pty Ltd
Read 2 reviews · Score: 57/100
Australia Wide Safety Solutions Pty Ltd.
Read 12 reviews · Score: 54/100
Alluvium Consulting Australia Pty Ltd
Read 2 reviews · Score: 51/100
Gondwana Carbon
Read 1 reviews · Score: 51/100
Otta International PTY Ltd.
Read 1 reviews · Score: 48/100
iEnvi
Read 1 reviews · Score: 48/100
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Frequently Asked Questions
Common questions about environmental consultants in Sydney.
Who are the best environmental consultants in Sydney?
As of October 2026, the 3 highest-ranked environmental consultants in Sydney, NSW on the Starworks directory are Building Harmony Building Biology (5.0 stars from 24 Google reviews), Energi Assessments - BASIX Certifications (5.0 stars from 22 Google reviews) and EnviroX Consulting (4.9 stars from 99 Google reviews). Every figure here is computed from Google review data that Starworks collects for environmental consultants in Sydney, NSW, recalculated when this page rebuilds. Placement on this list cannot be bought.
How many environmental consultants does Starworks rank in Sydney?
Starworks ranks 71 environmental consultants in Sydney, NSW, holding 576 Google reviews between them. Across the 71 the median rating is 5.0 stars from a median of 4 reviews. Of the 71, 58 are rated 4.5 or better. The most-reviewed carries 99 reviews, more than the top-ranked environmental consultant holds, which is why rating alone does not set the order.
What star rating should I expect from a good environmental consultant in Sydney?
The median Google rating across the 71 environmental consultants Starworks ranks in Sydney, NSW is 5.0 stars, and 58 of them sit at 4.5 or above. A rating at or near that median is ordinary for environmental consultants in Sydney, NSW rather than a warning sign on its own, and a rating well above it only means much when enough reviews stand behind it.
How many Google reviews does an established environmental consultant in Sydney have?
The median environmental consultant Starworks ranks in Sydney, NSW carries 4 Google reviews. The most-reviewed of them carries 99.
How does Starworks rank environmental consultants in Sydney?
Starworks gives every environmental consultant in Sydney, NSW a reputation score out of 100 from three things: its Google star rating (up to 47 points), how many reviews back that rating (up to 35), and whether customers can reach it by website and phone number (up to 18). Review volume is the one part that can subtract: below 15 reviews it costs points, because a near-empty review record gives a stranger very little to go on. No score falls below 0 and placement cannot be bought. The score measures the strength of a business's public review record rather than the quality of its work, so it is worth reading the reviews as well, and every listing links to them on Google.
Why does a environmental consultant in Sydney with all 5-star reviews score lower than one with a lower rating?
Because review volume counts as well as rating, and below 15 reviews it counts against you. Five perfect reviews are encouraging but thin evidence; three hundred reviews averaging 4.7 tell a stranger far more about what to expect on the day. That is a judgement about how much proof exists, not about the quality of the work, and a newer environmental consultant with a handful of excellent reviews may still be the right choice in Sydney, NSW. The star rating and review count sit next to every score so you can weigh both yourself.
Why does the same environmental consultant not appear several times on this list?
Some businesses run more than one Google listing, often one per suburb they service. Those are the same company, so Starworks groups them and shows the business once, using the listing with the strongest review record. That is why this page opens with 50 distinct environmental consultants in Sydney, NSW rather than a longer list of repeats.
How often is this list of environmental consultants in Sydney updated?
This ranking of environmental consultants in Sydney, NSW rebuilds on a 30-day cycle and prints the date of its last rebuild above the list, which for the current version is October 2026. Ratings and review counts are re-read from Google over time rather than on a fixed schedule, so an individual figure here can be older than the rebuild date.
How can I improve my environmental consultant business ranking in Sydney?
Collect genuine customer reviews consistently, and keep a working website and phone number on your Google listing, because those are the three inputs the score reads. There is no placement to buy on this page. For scale: the median environmental consultant Starworks ranks in Sydney, NSW carries 4 Google reviews at 5.0 stars.
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