#1
Supreme Property Maintenance (SA) Pty Ltd
5.0
Read 61 reviews · Score: 81/100
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Every suburb, every trade
Bestin
2026 Rankings
Best Builders & Trades in Semaphore
Compare the top builders & trades in Semaphore, SA, ranked by our composite reputation score.
Updated October 2026 · Based on 196 real Google reviews across the 15 builders & trades
Bestin
Top Builders & Trades in Semaphore, SA
The short answer
As of October 2026, the 3 highest-ranked builders & trades in Semaphore, SA on the Starworks directory are Supreme Property Maintenance (SA) Pty Ltd (5.0 stars from 61 Google reviews), GRAPHITE CONSTRUCTION MANAGEMENT CUSTOM HOMES (5.0 stars from 16 Google reviews) and my:concept design & drafting (5.0 stars from 12 Google reviews).
Starworks ranks 15 builders & trades in Semaphore, SA, holding 196 Google reviews between them. Across the 15 the median rating is 5.0 stars from a median of 6 reviews. Of the 15, 10 are rated 4.5 or better.
Every figure here is computed from Google review data that Starworks collects for builders & trades in Semaphore, SA, recalculated when this page rebuilds. Placement on this list cannot be bought.
#2
GRAPHITE CONSTRUCTION MANAGEMENT CUSTOM HOMES
5.0
Read 16 reviews · Score: 66/100
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#4
Pine Construction and Interiors Pty. Ltd.
5.0
Read 2 reviews · Score: 57/100
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#7
Truline Construct
5.0
Read 6 reviews · Score: 55/100
316 St Port, Port Adelaide SA 5015
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#11
SF Prestige Group - Home Builder | Property Builder in Port Adelaide
4.4
Read 7 reviews · Score: 28/100
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#12
Custom Home Builders Adelaide - Tetrabuilt
4.3
Read 6 reviews · Score: 28/100
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#15
Halliday Builders
4.4
Read 8 reviews · Score: 19/100
96 Semaphore Rd, Adelaide SA 5019
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What customers wrote about builders & trades in Semaphore
Real Google reviews of businesses ranked on this page. Reviewer names are never shown.
“I recently engaged Supreme Property Maintenance to clear my very neglected gutters. The SPM guys were awesome! They were punctual (arriving when they said they would) and respectful in their conduct with myself and…”
“Great company and great people to do business with. Pleased to be associated with Maritime Constructions P/L”
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Frequently Asked Questions
Common questions about builders & trades in Semaphore.
Who are the best builders & trades in Semaphore?
As of October 2026, the 3 highest-ranked builders & trades in Semaphore, SA on the Starworks directory are Supreme Property Maintenance (SA) Pty Ltd (5.0 stars from 61 Google reviews), GRAPHITE CONSTRUCTION MANAGEMENT CUSTOM HOMES (5.0 stars from 16 Google reviews) and my:concept design & drafting (5.0 stars from 12 Google reviews). Every figure here is computed from Google review data that Starworks collects for builders & trades in Semaphore, SA, recalculated when this page rebuilds. Placement on this list cannot be bought.
How many builders & trades does Starworks rank in Semaphore?
Starworks ranks 15 builders & trades in Semaphore, SA, holding 196 Google reviews between them. Across the 15 the median rating is 5.0 stars from a median of 6 reviews. Of the 15, 10 are rated 4.5 or better.
What star rating should I expect from a good builder in Semaphore?
The median Google rating across the 15 builders & trades Starworks ranks in Semaphore, SA is 5.0 stars, and 10 of them sit at 4.5 or above. A rating at or near that median is ordinary for builders & trades in Semaphore, SA 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 builder in Semaphore have?
The median builder Starworks ranks in Semaphore, SA carries 6 Google reviews.
How does Starworks rank builders & trades in Semaphore?
Starworks gives every builder in Semaphore, SA 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 builder in Semaphore 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 builder with a handful of excellent reviews may still be the right choice in Semaphore, SA. The star rating and review count sit next to every score so you can weigh both yourself.
Why does the same builder 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 15 distinct builders & trades in Semaphore, SA rather than a longer list of repeats.
How often is this list of builders & trades in Semaphore updated?
This ranking of builders & trades in Semaphore, SA 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 builder business ranking in Semaphore?
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 builder Starworks ranks in Semaphore, SA carries 6 Google reviews at 5.0 stars.
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