Mizzenconstruction Reviews 10

TrustScore 4 out of 5

3.9

While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more

To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more

3.9

Great

TrustScore 4 out of 5

10 reviews

5-star
4-star
3-star
2-star
1-star

How this company uses Trustpilot

See how their reviews and ratings are sourced, scored, and moderated.

Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

Mizzen installed a new boiler and 10…

Mizzen installed a new boiler and 10 new radiators - they made a very good job and no damage to any decorations - the engineers were all very polite and professional and left everything very clean and tidy - thank you - very impressed with the work

23 April 2026
Unprompted review
Rated 3 out of 5 stars

Good installation undermined by poor finishing, unclear quoting and an incomplete job.

I really wanted to have a great experience with Mizzen and leave a strong review, given the many positive ones. Unfortunately, my experience was mixed.

I asked for a quote on 3 items:
- shower installation
- tap installation
- investigation of toilet issues

Sent photos, received a quote, agreed, paid the deposit.

The engineer showed on time, did a good installation and then did a poor silicone job around the basin: inaccurate, seams unsealed, cracked. He did not neglect this job completely, but the result looked unprofessional.
Investigation was effectively not carried out: he spent 1 minute on it, no questions asked, no stack inspection, no reasoning about the system, venting, etc. He said: "I don't know, I'll ask fellow engineers". Never did, as far as I'm aware. When I suggested an idea, he decided it's the right one. The problem is not that he arrived at incorrect resolution, but that no proper process of investigation took place.

After the visit we were discussing this situation with Charlie.
His initial position was that investigation did happen, basin removal, its reinstallation and silicone cover was not part of the original quote. He suggested they come for silicone fix, but the investigation item should stay.
Later, the investigation charge was removed, but there was a proposal to charge additionally for basin removal, waste replacement, and silicone work, more than doubling the original tap installation quote, despite this not being agreed in advance or communicated during the visit.

I feel they didn't put enough attention to quoting, faced  the job turned out to be more complex than initially expected, never mentioned during the visit the fact that they had to do the additional work and may be were not prepared for it and then tried to charge for it retroactively.
They did good work on installation. Tap and shower work. Silicone needs full reapplication. Investigation process was not carried out.

From this experience, it seems that outcomes may depend on the engineer assigned. I believe they are a capable and professional team, but it would be helpful if scope and potential additional costs were clarified more clearly upfront, and if finishing details (such as silicone) and diagnostic work received more attention.

1 April 2026
Unprompted review
Rated 5 out of 5 stars

I needed a tap replacing on the kitchen…

I needed a tap replacing on the kitchen sink. Engineer was very courteous, explained what he had to do and tidied up afterwards. All in all, a very pleasant experience and would definitely use them again!

3 February 2026
Unprompted review
Rated 1 out of 5 stars

bad job bad communication

£7,000 spent, and after only two months everything is leaking.
The company refuses to send anyone to fix the issues.
They even emailed me saying they don’t understand why I left a negative review.

17 October 2025
Unprompted review
Rated 5 out of 5 stars

Replaced old heating system and more

Replaced my 'megaflow' type system with a combi boiler and converted the tank cupboard into an airing cupboard. Replaced a radiator and shower too. These guys are great. Very courteous and explain at every stage. Would definitely recommend.

12 August 2024

Is this your company?

Claim your profile to access Trustpilot’s free business tools and connect with customers.

Get free account

The Trustpilot Experience

Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.

Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.

Learn more about other kinds of reviews.

We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.

Learn about Trustpilot’s review process.

Here are 8 tips for writing great reviews.

Verification can help ensure real people are writing the reviews you read on Trustpilot.

Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.

Take a closer look