Louis and his team did an outstanding job on our renovation. They are skilled, efficient, and always kept us in the loop. Every detail was finished to perfection, and the whole process felt smooth and stress-free. They stuck to the timeline, delivered amazing results, and were a pleasure to work with. We’ll definitely be calling them again for future projects, highly recommend!
Public evidence profile
Louis Carlsen Build & Renovation Limited
Companies House
Active incorporated business
Trust Score
51out of 100
- Rated 5.0 from 46 reviews
- Reviewed 11 months ago
How this score is worked out
Rating5.0 / 5
Review volume46
Independent sources2 independent public sources
CredentialsNo credentials shown yet
How this score is made up
What customers say35.3 of 60
Independent checks8.1 of 30
Track record8.1 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.
Companies House registration
ActiveActive incorporated business
Louis Carlsen Build & Renovation Limited is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.
Legal nameLouis Carlsen Build & Renovation Limited
Company number12687980
Incorporated
Registered activityHome building & construction
Run by1 director (longest-serving director appointed in 2020)
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 6 years on the register also points to an established business rather than a brand-new one.
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
- Checkatrade46 reviews · 5.0 avg
Detailed reviews
These are the individual reviews we hold for Louis Carlsen Build & Renovation Limited, including the highlights above. The 46 headline total is the review volume reported across public review sources.
we wanted to change our shower which involved new tray/shower/surround, new lights and fans in ceiling, micro cement walls, new shower rail, extended internal wall, decoration and removal of existing bath. Louis knew exactly what we wanted, was great to deal with, value for money, and completed the job in a very professional way where he explained what was happening and any decisions we had to make. Would definitely use again if we needed any further work done in the house
Local context
Rated 5.0, in line with the local average for builders in Windsor
Across 23 builders in Windsor, 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.
Services they list
Agricultural BuildingBasement / Cellar ConversionsBrick / Concrete Structural RepairsCar PortsCladdingConcrete GaragesConcretingCore DrillingDemolitionDiamond DrillingEquestrian StableExtensions / Conversions
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
BerkshireWindsor
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 Louis Carlsen Build & Renovation Limited before you contact them.
Run Cowboy Checker →Good to know
Common questions about Louis Carlsen Build & Renovation Limited
Is Louis Carlsen Build & Renovation Limited a legitimate business?
Louis Carlsen Build & Renovation Limited has 46 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 Louis Carlsen Build & Renovation Limited?
Louis Carlsen Build & Renovation Limited has 46 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 Louis Carlsen Build & Renovation Limited's reviews are genuine?
Louis Carlsen Build & Renovation Limited's 46 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 Louis Carlsen Build & Renovation Limited a registered business?
Louis Carlsen Build & Renovation Limited is a registered business on Companies House (company number 12687980), incorporated 22 Jun 2020, listed as active. This confirms the legal registration of the business, not evidence of workmanship or service quality.
What does Louis Carlsen Build & Renovation Limited specialise in?
Louis Carlsen Build & Renovation Limited lists specialist services including Agricultural Building, Basement / Cellar Conversions, Brick / Concrete Structural Repairs, Car Ports, Cladding, Concrete Garages. If your job is one of these, look for it in their listed services or ask them to confirm for your project.