Trade cover image

RCB Design & Build Contractors

10/10

London

£1,000 guarantee T&Cs apply

Checkatrade member since May 2025

Skills

  • Extensions / Conversions
  • General Building
  • Loft Conversions
  • Refurbishments

Customer Reviews

Write a review

10 /10

Based on 6 reviews over the past 12 months

Quality of work

10

Reliability

10

Communication

10

Reviews (118)

  • 10

    General Building

    Posted 18 October

    Excellent initial consultation and advice

    Excellent initial consultation and advice I recently had an online consultation with Vasi regarding alterations to the steps leading to our home. From the outset, he was extremely professional, friendly and knowledgeable. He took the time to listen to our circumstances, understand our concerns and discuss various options for making our entrance safer and more accessible. What particularly impressed me was the detailed follow-up email, which included helpful design suggestions, estimated costs and information about possible grants and financial assistance that we weren’t previously aware of.
    Job location: ME1
    Michelle C

    Response from RCB Design & Build Contractors

    Thank you, Michelle, for such a kind review. It was a pleasure helping you explore safer, more accessible options for the steps and entrance to your home. Every project should start with listening, clear advice and realistic costs, including any support available. Whether it's access improvements, extensions, lofts or refurbishments, we're happy to help homeowners across London and Kent plan with confidence. We look forward to hearing from you when you're ready. Anyone considering a project is welcome to contact us at www.rcbGroup.co.uk. Kind regards, Vasi J., & RCB Group Team

  • 10

    Kitchen Refurbishments

    Posted 07 August

    A Stress-Free Experience with Beautiful Results

    We are extremely happy with the work completed on our entrance hallway. The team was very professional, reliable, and delivered the project on time with excellent quality. We were initially worried after having a bad experience with workers in the past, but they completely changed our expectations. They treated our home with great respect, kept everything clean and tidy throughout the project, and left the space spotless when they finish. We couldn’t be happier with the final result and would highly recommend them. We will definitely use them again for future projects. Thanks Anca and Costa!
    Job location: SE16

    Response from RCB Design & Build Contractors

    Hi, Thank you for your kind words & for trusting RCB Design & Build. We’re delighted you’re happy with the overall experience, the quality of our workmanship & the care and respect shown throughout your project. It was a pleasure working with you, & we’d be very happy to help again with any future refurbishment, renovation, reconfiguration, extension or loft project. Please feel free to recommend our RCB Design & Build services to family & friends, and to explore more of our completed projects, client reviews & services online. Warm regards Vasi. J. & RCB Design & Build Team

  • 10

    Extensions / Conversions

    Posted 17 July

    If you're looking for clear communication and a schedule that's stuck to, I'd highly recommend!

    We're currently halfway through a rear extension and loft conversion with RCB Design & Build, and so far I'm really pleased with how the project is going. From day one, communication has been exceptional - I've been kept in the loop on every single decision, with daily updates on progress across the project. If you're looking for a team that's big on communication and committed to keeping your project on schedule, RCB Design & Build are the ones to go with. Highly recommended, I'll update this review once the project is complete!
    Verified reviewerJob location: WD6
  • 10

    Extensions / Conversions

    Posted 01 July

    Kitchen Extension

    We used RCB Design & Build for our kitchen extension and renovation. The project was well organised, the team were skilled and reliable, and the standard of finish is excellent.They handled everything from structural works to the final details exaclty what we want from a principal contractor. Highly recomanded.
    Verified reviewerJob location: SW15
  • 10

    Bathroom Supply & Fit

    Posted 20 January

    Bathroom removal and fitting

    Vasi and co did a great job removing the two old student showers and joining them together to make a single bathroom in our house. The work was done to a high standard, but what stood out was the communication. They gave an update of the work performed at the end of each day and we're very responsive to message. This was appreciated as it made me a lot less anxious about the work being done.
    Verified reviewerJob location: SE8
    Keir G
  • 10

    Extensions / Conversions

    Posted 08 January

    Conservatory rebuild

    " I had a lot of problems with my conservatory, I.e cracked walls and dropped floor. I contacted RCB Design & Build, could not have chosen a better company. They were so helpful, explaining and outlining the reasons for my problem. They completely rebuilt from the base upwards, very hardworking, friendly and professional. Anca was on hand to oversee the progress of work and answer any questions I may have had. I can thoroughly and truly recommend this company for any kind of building work. "
    Verified reviewerJob location: E16

Photos

Company Info

Owner

Mr Vasilica Juncanariu

Ltd Company

1 years on Checkatrade

VAT Registered

Yes: 210999791

Domestic WorkCommercial WorkFree EstimatesCards Accepted

Why Choose RCB – Residential, Commercial, Bespoke Construction Services?


Looking for a builder you can genuinely trust — one that turns plans into precision, and houses into homes?


Welcome to RCB, a fully insured, London-based Design & Build Principal Contractor, specializing in residential extensions, loft conversions, property refurbishments, HMO conversions, and bespoke renovation projects across Greater London and beyond.

We’re not just another building company.

We’re a professional construction partner — trusted by homeowners, landlords, and property investors for over 20 years.

Led by Vasi J., our senior management team brings over 60 years of combined professional experience in architecture, project management, building control, and quantity surveying. That means you get clarity, structure, and excellence from start to finish — no guesswork, no chaos.

What makes us different?

• We act as your principal contractor — managing all trades, suppliers, and compliance, so you don’t have to

• We give you remote CCTV access to monitor your project, even if you’re away or at work

• We offer in-house RIBA/ARB architect design, planning support, and drawings

• We provide detailed, transparent estimates from our QS team — no vague pricing

• We help with building regulations, planning submissions, and structural approvals

• We’re fully accredited by Checkatrade, FMB, TrustMark, and other trusted UK bodies

• We protect your investment with insurance, contracts (JCTs), schedules, and accountability

We don’t overpromise and underdeliver.

We don’t juggle too many jobs.

And we don’t believe in “builder’s talk.”

Instead, you get honest advice, regular updates, weekly check-ins, and a dedicated project manager who keeps everything moving forward with precision and care.


Still unsure?

Don’t just take our word for it.

Check our reviews. See our work. Ask us questions.

We welcome it — because we’re proud of the way we work.


🛡️ Whether you’re a first-time renovator or seasoned investor, with RCB you get structure, service, and results — delivered to British Standards, with clarity and care.

📞 Contact us today for a friendly, no-obligation consultation

🌐 Visit <a href="http://www.rcbgroup.co.uk/" target="_blank">www.rcbgroup.co.uk</a> to learn more or book your project review

📹 Follow us on social media and YouTube for real project videos and client feedback

RCB — Residential. Commercial. Bespoke.

Structure. Clarity. Accountability. That’s what we build.


Kind regards,

Vasi J. & the RCB Services Team

📞<span style="font-size: 14px;">+44 7359 872594 | 🌐 <a href="http://www.rcbgroup.co.uk/" target="_blank">www.rcbgroup.co.uk</a>

Accreditations and awards

Verified

Checkatrade has verified with issuing organisations.

City & Guilds Qualified - Level 3
City & Guilds Qualified - Level 3

Self Certified

Provided by the trade. Checkatrade has not verified.

BAFE
BAFESelf certified
British Gypsum
British GypsumSelf certified
British Wood Flooring Association
British Wood Flooring AssociationSelf certified
CHAS
CHASSelf certified
CITB
CITBSelf certified
CITY & GUILDS
CITY & GUILDSSelf certified
CSCS
CSCSSelf certified
City & Guilds Qualified - Level 2
City & Guilds Qualified - Level 2Self certified
City & Guilds Qualified - Level 4
City & Guilds Qualified - Level 4Self certified
City & Guilds Qualified - Level 5
City & Guilds Qualified - Level 5Self certified
City & Guilds Qualified - Level 6
City & Guilds Qualified - Level 6Self certified
City & Guilds Qualified - Level 7
City & Guilds Qualified - Level 7Self certified
City & Guilds Qualified - Level 8
City & Guilds Qualified - Level 8Self certified
City and Guilds
City and GuildsSelf certified
Constructionline
ConstructionlineSelf certified
ContractorPlus
ContractorPlusSelf certified
Cure It
Cure ItSelf certified
Dirtbusters - Approved Member
Dirtbusters - Approved MemberSelf certified
Dry Fusion
Dry FusionSelf certified
Dulux & Trustmark
Dulux & TrustmarkSelf certified
FENSA
FENSASelf certified
FLIR
FLIRSelf certified
FSA
FSASelf certified
FairTrades
FairTradesSelf certified
Freeview
FreeviewSelf certified
Glow Worm
Glow WormSelf certified
Greendeal Approved
Greendeal ApprovedSelf certified
Greendeal Loft Insulation
Greendeal Loft InsulationSelf certified
HPAS
HPASSelf certified
HomePro
HomeProSelf certified
Houzz
HouzzSelf certified
ISOQAR
ISOQARSelf certified
Ideal Accredited Installer
Ideal Accredited InstallerSelf certified
Institute Of Roofing
Institute Of RoofingSelf certified
LABC
LABCSelf certified
NVQ
NVQSelf certified
National Association of Drainage Contactors
National Association of Drainage ContactorsSelf certified
National Federation of Builders
National Federation of BuildersSelf certified
Nu-Heat
Nu-HeatSelf certified
PROMPT Register
PROMPT RegisterSelf certified
Polypipe Registerd Installer
Polypipe Registerd InstallerSelf certified
PowerFlush Association
PowerFlush AssociationSelf certified
Quick Step
Quick StepSelf certified
REHAU
REHAUSelf certified
ROSPA
ROSPASelf certified
SIG Roofing One Warranty
SIG Roofing One WarrantySelf certified
SSAIB CCTV Systems
SSAIB CCTV SystemsSelf certified
SSAIB Intruder Alarms
SSAIB Intruder AlarmsSelf certified
SSIP – Safety Systems in Procurement
SSIP – Safety Systems in ProcurementSelf certified
Thames Water
Thames WaterSelf certified
The Architectural Ironmongers
The Architectural IronmongersSelf certified
The Association of Professional Landscapers
The Association of Professional LandscapersSelf certified
The Guild of Builders & Contractors
The Guild of Builders & ContractorsSelf certified
Triton
TritonSelf certified
TrustMark Trading Standards
TrustMark Trading StandardsSelf certified
UKAS
UKASSelf certified
United Kingdom Asbestos Training Association
United Kingdom Asbestos Training AssociationSelf certified
Vaillant
VaillantSelf certified
Velux Certified Installer
Velux Certified InstallerSelf certified
Viessman
ViessmanSelf certified
What Tradesmen
What TradesmenSelf certified
Worcester Bosch Group
Worcester Bosch GroupSelf certified
Worcester Bosch Registered Installer
Worcester Bosch Registered InstallerSelf certified
Yale Doormaster
Yale DoormasterSelf certified

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Member since May 2025

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