“The communication was excellent throughout.” · Checkatrade, 7 Dec 2025
“Great communication.” · Checkatrade, 24 Nov 2025
Public evidence profile
KJ's Building Contractors Ltd
Companies House
Active incorporated business
Trust Score
65out of 100
- 184 reviews across 2 review sources, rated 5.0 where a rating is published
- 3 reviews in the last 12 months
How this score is worked out
Rating5.0 / 5
Review volume184
Independent sources3 independent public sources
CredentialsNo credentials shown yet
How this score is made up
What customers say46.7 of 60
Independent checks10.6 of 30
Track record8 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 site2.6 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
KJ's Building Contractors Ltd is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.
Legal nameKJ's Building Contractors Ltd
Company number09918335
IncorporatedNot listed
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.
From customer reviews
What customers consistently say
Recurring themes from 4 customer reviews across 2 review sources. Analysis updated 18 Aug 2026.
Respectful and tidy in your home: “The site was kept tidy and safe at all times.” · Checkatrade, 24 Nov 2025
“They were always on time and all the guys are extremely hard working.” · Checkatrade, 7 Dec 2025
“The workers were first class on time keeping.” · Checkatrade, 24 Nov 2025
Reviews · public evidence
What customers say
These reviews are published independently on the named public sources 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
Customers often mention
Where these reviews are published
- Checkatrade183 reviews
- Rated People1 review · 5.0 avg
Detailed reviews
These are the individual reviews we hold for KJ's Building Contractors Ltd, including the highlights above. The 184 headline total is the review volume reported across public review sources.
I couldn’t recommend this firm enough, from start to finish they went above and beyond. This time using them they’ve done all the drainage and blockwork for my 2 bed detached modern bungalow/lodge. From the beginning of the job Kris helped me with the ongoing work in other areas his knowledge on new builds is second to none. He didn’t come in the cheapest but learning from past mistakes pay cheap pay twice and end up with headaches along the way. This time round there has been no headaches all plain sailing. Great team and left the site spotless when they finished. Thanks lads
Kris and his guys did the ground work for our extension and they were absolutely brilliant. Ten out of ten!! The communication was excellent throughout. Very professional, honest and trustworthy. . They were always on time and all the guys are extremely hard working. All the guys are very experienced. Kris always kept us up to date on progress. They were also brilliant with the neighbours, very friendly and polite, going out of their way to make sure everyone was happy and considerate with parking. We would 100% recommend KJ’s to anyone considering using them.
I’m delighted with my new garden area. The workers were first class on time keeping. Great communication. I was kept well informed and involved in decision making. The site was kept tidy and safe at all times. My safety was prioritised. Beautiful job.
House Extension
Kris & his team have been an absolute pleasure to work with on our kitchen extension project over the last few months. They have been professional and friendly, with a great attention to detail. Kris approached the project and all of the challenges that we had with a great positivity and can-do attitude. We are absolutely delighted with the finished result and couldn't have asked for a better team to help us get here. I wouldn't hesitate recommend Kris and his team for future projects.
Local context
Rated 5.0, in line with the local average for builders in Worthing
Across 76 builders in Worthing, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Sources
3 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
BrickworkDemolitionExtensions / ConversionsFoundationsGarage ConversionsGarden StudiosGeneral BuildingLoft ConversionsNew BuildsPeriod Property RestorationProject ManagementRefurbishments
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
Worthing
The areas they list covering on a public directory; confirm they cover your address before you book.
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 KJ's Building Contractors Ltd before you contact them.
Run Cowboy Checker →Good to know
Common questions about KJ's Building Contractors Ltd
Is KJ's Building Contractors Ltd a legitimate business?
As of 10 Sept 2026, we hold 184 independent reviews across Checkatrade and Rated People for this business, and Companies House lists (no. 09918335) as active, checked 11 Mar 2026. This is independent public evidence, not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about KJ's Building Contractors Ltd?
KJ's Building Contractors Ltd has 184 public reviews, averaging 5 out of 5, gathered across 2 review sources, 1 of which publish a rating. You can read the individual reviews and where each came from in the reviews section above.
How do I know KJ's Building Contractors Ltd's reviews are genuine?
KJ's Building Contractors Ltd's 184 public reviews are gathered and cross-checked across 2 review sources. Reviews spread across several review 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.
Has KJ's Building Contractors Ltd had recent public reviews?
KJ's Building Contractors Ltd has 3 public reviews dated within the last 12 months. That shows their review history includes recent feedback; it does not prove current availability, so confirm capacity before hiring.
Is KJ's Building Contractors Ltd a registered business?
KJ's Building Contractors Ltd is a registered business on Companies House (company number 09918335), listed as active. This confirms the legal registration of the business, not evidence of workmanship or service quality.
What does KJ's Building Contractors Ltd specialise in?
KJ's Building Contractors Ltd lists specialist services including Brickwork, Demolition, Extensions / Conversions, Foundations, Garage Conversions, Garden Studios. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
How long has KJ's Building Contractors Ltd been trading?
KJ's Building Contractors Ltd has been reviewed on public sources since 2020.