“After buying a house with many problems i contacted TRI DYN & I'm so glad I did. Throughout the whole process there was good communication, good time keeping, always friendly, honest, tidy & polite. I had a leaking wet room that needed taking out & a new bathroom installed. I couldn't be happier. Liam & Sian work there socks off & are a great team! Always giving me the best advice along the way. I also found a leak on the chimney & condensation in the attic. Again I called TRI DYN & the knowledge, experience & workmanship was brilliant. I can't recommend these guy's highly enough!”
Public evidence profile · Checked April 2026
Tri Dyn Electrical and Building Services
Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.
Reviews · public evidence
What customers say
These reviews are published independently on the named public source below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
5.0out of 5
Based on the 3 reviews with a star rating
5 stars3
4 stars0
3 stars0
2 stars0
1 star0
Where these reviews are published
- Checkatrade17 reviews · 5.0 avg
Highlights
“What can I say! Liam, Keiron and Bernie were professional, understanding and helpful during our works: Replacing a 25 year old girder supporting our main bedroom. They explained the process at each stage. We felt confident with their knowledge and experience dealing with a complex situation and the works completed to a high standard. We will definitely use them again and recommend them.”
“What can I say other than I would beyond recommend Liam. From the moment he came to give me a quote and look at the job I had a good vibe from his friendly attitude to his expertise when I was asking questions. The work was carried out efficiently over 2 days as agreed. The areas were left clean after each day and most importantly the work was completed to a high standard. I can not recommend Liam enough. Such a nice guy with great silicone skills which is very important to me. Approaching Liam throughout the job was never an issue and my happiness with the work was his priority.”
Detailed reviews
After buying a house with many problems i contacted TRI DYN & I'm so glad I did. Throughout the whole process there was good communication, good time keeping, always friendly, honest, tidy & polite. I had a leaking wet room that needed taking out & a new bathroom installed. I couldn't be happier. Liam & Sian work there socks off & are a great team! Always giving me the best advice along the way. I also found a leak on the chimney & condensation in the attic. Again I called TRI DYN & the knowledge, experience & workmanship was brilliant. I can't recommend these guy's highly enough!
What can I say other than I would beyond recommend Liam. From the moment he came to give me a quote and look at the job I had a good vibe from his friendly attitude to his expertise when I was asking questions. The work was carried out efficiently over 2 days as agreed. The areas were left clean after each day and most importantly the work was completed to a high standard. I can not recommend Liam enough. Such a nice guy with great silicone skills which is very important to me. Approaching Liam throughout the job was never an issue and my happiness with the work was his priority.
What can I say! Liam, Keiron and Bernie were professional, understanding and helpful during our works: Replacing a 25 year old girder supporting our main bedroom. They explained the process at each stage. We felt confident with their knowledge and experience dealing with a complex situation and the works completed to a high standard. We will definitely use them again and recommend them.
Local context
Rated 5.0, above the local average for builders in Caerphilly
Across 13 builders in Caerphilly, the typical rating is 4.7 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Sources
1 named public sourceWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Public evidence last checked April 2026
About
Builder in Caerphilly, Mid Glamorgan.
Independent checks
About this business
Recently reviewed3 reviews in the last 12 months.
Your own checks
What to check before you hire
Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
Verify at the sourceCheck them yourself
This trade isn't licensed in the UK, so anyone can set up. TrustMark is the only Government-endorsed quality scheme for work in and around the home - check whether they're registered, or find a TrustMark-registered business.
Check the TrustMark registerNever pay a large deposit up front. Agree a staged payment schedule tied to completed milestones, and hold a small retention until snagging is done.
Get it in writing: an itemised quote with scope, materials, start and finish dates, and how any changes (variations) will be priced.
Be wary of a cash-only price or pressure to start tomorrow. Both are red flags for an unaccountable job.
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Common questions about Tri Dyn Electrical and Building Services
Is Tri Dyn Electrical and Building Services a legitimate business?
Tri Dyn Electrical and Building Services has 17 independent public reviews, rated 5 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about Tri Dyn Electrical and Building Services?
Tri Dyn Electrical and Building Services has 17 public reviews, averaging 5 out of 5. You can read the individual reviews and where each came from in the reviews section above.
How do I know Tri Dyn Electrical and Building Services' reviews are genuine?
Tri Dyn Electrical and Building Services' 17 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published, so you can open the source and read them yourself rather than trusting a single curated page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.
Has Tri Dyn Electrical and Building Services had recent public reviews?
Tri Dyn Electrical and Building Services has 3 public reviews dated within the last 12 months. That shows their review history includes recent feedback; it does not prove current availability, so confirm capacity before hiring.
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