Builder
Blue Line Build Ltd
Companies House
Active incorporated business
Trust score
85out of 100
Rating4.9★
Review volume164
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 Blue Line Build 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 Blue Line Build Ltd →Companies House registration
ActiveActive incorporated business
Blue Line Build Ltd is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.
Legal nameBlue Line Build Ltd
Company number12222958
Incorporated
Registered activityHome building & construction
Official checkListed
Planning evidence
Nearby projects
Checking nearby planning applications.
About
Verified kitchens in Carshalton, Surrey.
Reviews · public evidence
What the public record says
4.9out of 5
Highlights
"Konrad did an amazing job replacing my kitchen and repairing damage from a leak. The work included a small interior remodel, new floors and the kitchen installation. He paid attention to detail, asked me all the right questions and when he came across a problem he’d always suggest a solution. I could not be happier with my new kitchen and would use him again anytime."
"Very helpful and provided advice throughout the process of refurbishing two of our bathrooms. We are very happy with the results and our experience."
Detailed reviews
Very helpful and provided advice throughout the process of refurbishing two of our bathrooms. We are very happy with the results and our experience.
Konrad did an amazing job replacing my kitchen and repairing damage from a leak. The work included a small interior remodel, new floors and the kitchen installation. He paid attention to detail, asked me all the right questions and when he came across a problem he’d always suggest a solution. I could not be happier with my new kitchen and would use him again anytime.
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Local context
Rated 4.9★ — in line with the local average for builders in Carshalton
Across 24 rated builders in Carshalton, the typical rating is 4.9★. 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 evidence4.9★ from 164 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: 4.9★
✓Review volume: 164
✓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.
Check the TrustMark registerSmart checks
Before you hire a builder
Never 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.
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 Blue Line Build Ltd
What do customers say about Blue Line Build Ltd?
Blue Line Build Ltd has 164 public reviews, averaging 4.9 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 Blue Line Build Ltd's reviews are genuine?
Blue Line Build Ltd's 164 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 Blue Line Build Ltd a registered business?
Blue Line Build Ltd is a registered business on Companies House (company number 12222958), incorporated 23 Sept 2019, listed as active. This confirms the legal registration of the business — not evidence of workmanship or service quality.
Want an extra legitimacy check?
Run the Cowboy Checker on Blue Line Build Ltd before you contact them.
