Builder
DeMa Construction Ltd
Companies House
Active incorporated business
Trust score
86out of 100
Rating5.0★
Review volume140
Source diversity3 sources
VerificationListed
Based on rating, review volume, independent sources and verification. Evidence context — not a guarantee of workmanship.
Trust at a glance
1 checkWhat we can verify about DeMa Construction Ltd
Each card summarises one evidence dimension from public sources — open it for the full detail and named source. This is evidence context, not a guarantee.
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 checkListed
Planning evidence
Nearby projects
Checking nearby planning applications.
About
Verified builder in St. Helens, Merseyside.
Reviews · public evidence
What the public record says
5.0out of 5
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."
"Marcin’s work was of the highest standard. He was incredible detailed and thorough and the end result was brilliant. It was easy having him work in the house and he was also super tidy. Over all he was absolutely outstanding."
Detailed reviews
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.
Marcin’s work was of the highest standard. He was incredible detailed and thorough and the end result was brilliant. It was easy having him work in the house and he was also super tidy. Over all he was absolutely outstanding.
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Local context
Rated 5.0★ — in line with the local average for builders in St. Helens
Across 5 rated builders in St. Helens, the typical rating is 5.0★. We compare against the same businesses a homeowner would find searching for this trade locally.
Public evidence checks
Public evidence shownTrust checks and red flags
Public review evidence5.0★ from 140 public reviewsCheckatradeCompanies HouseCompanies House Officers
Sources
3 named sourcesEvery signal, traced to its origin
Review sources
Checkatrade
Official sources
Companies HouseCompanies House Officers
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.
Public evidence checks
What's strong, and what to check yourself
✓Strong signals
✓Rating: 5.0★
✓Review volume: 140
✓Source diversity: 3 sources
!Worth checking yourself
!Verification: Listed
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.
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Before you hire a builder
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Be wary of a cash-only price or pressure to start tomorrow — both are red flags for an unaccountable job.
Ask to see a portfolio of completed work like yours, plus recent references you can contact.
Check the credentials and registrations that matter for this work — and that they are current.
Good to know
Common questions about DeMa Construction Ltd
What do customers say about DeMa Construction Ltd?
DeMa Construction Ltd has 140 public reviews, averaging 5 out of 5, gathered across 3 independent sources. 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 are gathered and cross-checked across 3 independent public sources. Reviews spread across several named sources are harder to fake than a single polished 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.
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