“The quality of the workmanship is outstanding & Marcin is a perfectionist.” · Checkatrade, 13 Jun 2025
“Marcin’s work was of the highest standard.” · Checkatrade
Public evidence profile
DeMa Construction Ltd
Review quality
No reviews in 12 months
Companies House
Active incorporated business
Trust Score
61out of 100
How this score is worked out
Rating5.0 / 5
Review volume140
Independent sources2 independent public sources
CredentialsNo credentials shown yet
How this score is made up
What customers say43.5 of 60
Independent checks8.1 of 30
Track record9.8 of 10
See the independent checks
- Licences and credentials0 of 10.3
- Ways to reach them2.9 of 3.4
- Reviewed on more than one site0 of 5.1
- Registered company details5.1 of 5.1
- Photos of their work0 of 4.3
- Industry recognition0 of 1.7
Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.
Trust at a glance
2 checksWhat we can verify about DeMa Construction Ltd
Each card sums up one thing we can check from public sources. Open it for the full detail and the named source. This is evidence context, not a guarantee.
Review qualityNo reviews in 12 monthsSee detail →Companies HouseActive incorporated businessSee detail →
See the full verification checklist for DeMa Construction Ltd →Companies House registration
ActiveActive incorporated business
DeMa Construction Ltd is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.
Legal nameDeMa Construction Ltd
Company number07969714
Incorporated
Registered activityBuilding development
Official checkOn the public register
Why this helps you judge trust: this trader is linked to a registered company with named people who are legally accountable for it, on an official register anyone can check, a layer of accountability an unregistered trader doesn't offer. Around 14 years on the register also points to an established business rather than a brand-new one.
Review quality check
Review recencyReview recency
How recently this business's reviews were left, kept separate from the star rating and the number of reviews.
No reviews from the last 12 months are shown.
From customer reviews
What customers consistently say
Recurring themes from 3 customer reviews on Checkatrade.
Respectful and tidy in your home: “is probably the tidiest builder in the world !!!” · Checkatrade, 13 Jun 2025
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
Where these reviews are published
- Checkatrade140 reviews · 5.0 avg
Highlights
“We used DeMa Construction last year for remodelling our kitchen & dining room & have just had them back to upgrade our lounge with the construction of a Media wall with the associated electric work, the whole room was also replastered & decorated. The quality of the workmanship is outstanding & Marcin is a perfectionist. He is extremely polite, knowledgeable & hard working & is probably the tidiest builder in the world !!! All in all I am extremely pleased with the whole experience & have recommended him to friends & neighbours.”
“Fabulous job done throughout the downstairs including installation of velux, new doors, flooring, brickwork plastering, pipe work etc. Fabulous job completed and would only ever use Marcin and DeMa in the future.”
Detailed reviews
These are the individual reviews we hold for DeMa Construction Ltd, including the highlights above. The 140 headline total is the review volume reported across public review sources.
We used DeMa Construction last year for remodelling our kitchen & dining room & have just had them back to upgrade our lounge with the construction of a Media wall with the associated electric work, the whole room was also replastered & decorated. The quality of the workmanship is outstanding & Marcin is a perfectionist. He is extremely polite, knowledgeable & hard working & is probably the tidiest builder in the world !!! All in all I am extremely pleased with the whole experience & have recommended him to friends & neighbours.
Fabulous job done throughout the downstairs including installation of velux, new doors, flooring, brickwork plastering, pipe work etc. Fabulous job completed and would only ever use Marcin and DeMa in the future.
Local context
Rated 5.0, in line with the local average for builders in St. Helens
Across 8 builders in St. Helens, the typical rating is 5.0 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Sources
2 named public sourcesWhere 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
Business and public registers
Check dates vary by source. Where we hold a date, the check shows it.
About
Builder in St. Helens, Merseyside.
Services they list
Brick / Concrete Structural RepairsCar PortsCladdingConcretingDemolitionExtensions / ConversionsFire and Flood RenovationFoundationsGarage ConversionsGarden StudiosGeneral BuildingLoft Conversions
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
MerseysideSt. Helens
The areas they list covering on a public directory; confirm they cover your address before you book.
Independent checks
About this business
A real, registered businessWe cross-checked Companies House: this business is officially registered for work that matches the builder services it advertises - independent confirmation it's a genuine business set up to do this kind of work, not just a directory entry.
Your own checks
What to check before you hire
Worth checking yourself
No credentials are shown here and the business has not claimed this profile. Ask to see certificates and insurance directly.
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.
Want an extra legitimacy check? Run the Cowboy Checker on DeMa Construction Ltd before you contact them.
Run Cowboy Checker →Good to know
Common questions about DeMa Construction Ltd
Is DeMa Construction Ltd a legitimate business?
DeMa Construction Ltd has 140 independent public reviews, rated 5 out of 5. It is a registered business on Companies House, listed as active, and the public register shows no adverse status (no dissolution, insolvency or strike-off) against it. 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 DeMa Construction Ltd?
DeMa Construction Ltd has 140 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 DeMa Construction Ltd's reviews are genuine?
DeMa Construction Ltd's 140 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.
Is DeMa Construction Ltd a registered business?
DeMa Construction Ltd is a registered business on Companies House (company number 07969714), incorporated 29 Feb 2012, listed as active. This confirms the legal registration of the business, not evidence of workmanship or service quality.
What does DeMa Construction Ltd specialise in?
DeMa Construction Ltd lists specialist services including Brick / Concrete Structural Repairs, Car Ports, Cladding, Concreting, Demolition, Extensions / Conversions. If your job is one of these, look for it in their listed services or ask them to confirm for your project.