Called in for remedial work after previous 2 storey side extension and loft extension. Rebuild much of the work and did an excellent job. Punctual, efficient and really know what they are doing! Great work overall.
Public evidence profile
SDB Construction Ltd
Credentials & registries
2 credentials shown
Companies House
Active incorporated business
Only 3 reviews held yet.
No Trust Score yet
- Rated 5.0 from 3 reviews
- 2 credentials shown
Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.
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
- Which? Trusted Traders3 reviews · 5.0 avg
Detailed reviews
SDB was highly recommended to us by a friend who worked with them on a major renovation last year. We completed a double story side extension, double story rear extension, front extension , loft conversion and full gutting and redoing of our house . SDB not only didn't disappoint they exceeded our expectations. They were immaculate, good attention to details, kept us informed throughout and acted as both an advisor to help our decisions (and trust me they ate so many) as well as construction firm. They were very easy to deal with, open, honest and very understanding. We had a schedule of build and cost estimates at the beginning with clear details of items included and not included. They delivered ahead of the agreed schedule and the quality of their work and the quality if the finishes is just superb. Some of our bespoke fittings was not easy to implement but SDB continuously raised to the challenges throughout the project and delivered. We decided to buy all of our second fixes to ensure it is to our tast and quality. SDB worked with us throughout the project to create a timetable for decision and procurement of the second fixes that followed the build schedule. The final result is extremely high quality finish both inside and outside that makes the house stand out in the street. We will use them again for future projects
SDB construction did my house renovation, they kept with the time that they had given me with outstanding results. I will be using SDB for any further renovations or DIY.
Local context
Rated 5.0, above the local average for electricians in London
Across 767 electricians in London, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Credentials and associations
2Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
- Source reference
- sdb-construction-ltd
- Source checked
- 11 Jul 2026
What this protects you with: As a member of the Federation of Master Builders, you get independent vetting of the builder, the option of an insurance-backed warranty on the work and access to a dispute resolution service.
Open this source entry (opens in new tab)- Source checked
- 25 Jun 2026
Companies House registration
ActiveActive incorporated business
SDB CONSTRUCTION LTD is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.
Legal nameSDB CONSTRUCTION LTD
Company number10949774
Incorporated
Registered activitySpecialised construction
Run by1 director (longest-serving director appointed in 2017)
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 9 years on the register also points to an established business rather than a brand-new one.
Source-listed gallery
1 photoPhotos listed on Which? Trusted Traders
These sources do not label every image as completed work. The gallery may include projects, people, logos or certificates, so it does not count as completed-work evidence.
From Which? Trusted Traders
Opening hours
The hours this business publishes online, handy for knowing when to call. Confirm before you set off.
- Monday–Saturday
- 8am–6pm
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
Registers and membership directories
Business and public registers
Check dates vary by source. Where we hold a date, the check shows it.
About
SDB Construction builds new homes, carries out conversions and renovates houses in London. We care about the quality of work and commitment to our clients. Planning, communication, project management and client satisfaction are the vital aspects of our work. Complete service from start to finish is structured and designed according to specifications. We make sure that we understand the needs and expectations of our clients and then create a comprehensive plan to achieve those expectations.
Services they list
ExtensionsLoft conversionsPorchesPlasteringGarage conversionsBuilding servicesJoinery and carpentryEmergency plumbing servicesRe-pointingCentral heating systems (installation and servicing)electrical works
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Your own checks
What to check before you hire
Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
Verify at the sourceCheck them yourself
Electrical work in homes in England & Wales should be done by a registered competent person who can self-certify it meets the Part P safety rules. Check they're on the official register.
Check the electrical registerIn England and Wales, notifiable electrical work (new circuits, a consumer unit, anything in a bathroom or kitchen) must by law be signed off under Part P of the Building Regulations. Confirm they will handle that.
Prefer an electrician registered with a government-approved competent-person scheme (NICEIC, NAPIT or ELECSA) so they can self-certify the work meets the wiring regulations.
Insist on the Electrical Installation Certificate (or Minor Works Certificate) when the job is done. It is your proof the work is safe and compliant, and you will need it if you ever sell.
Want an extra legitimacy check? Run the Cowboy Checker on SDB Construction Ltd before you contact them.
Run Cowboy Checker →Good to know
Common questions about SDB Construction Ltd
Is SDB Construction Ltd a legitimate business?
SDB Construction Ltd has 3 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 SDB Construction Ltd?
SDB Construction Ltd has 3 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 SDB Construction Ltd's reviews are genuine?
SDB Construction Ltd's 3 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 SDB Construction Ltd qualified and accredited?
We hold 2 independently sourced credentials for SDB Construction Ltd, including Federation of Master Builders, Which? Trusted Trader. Each is attributed to the body that issued it in the credentials section. For example, Federation of Master Builders is the Federation of Master Builders: members are independently inspected and can offer an insurance-backed warranty.
Is SDB Construction Ltd a registered business?
SDB CONSTRUCTION LTD is a registered business on Companies House (company number 10949774), incorporated 6 Sept 2017, listed as active. This confirms the legal registration of the business, not evidence of workmanship or service quality.
What does SDB Construction Ltd specialise in?
SDB Construction Ltd lists specialist services including Extensions, Loft conversions, Porches, Plastering, Garage conversions, Building services. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
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