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LSJ Building & Construction

Cardiff, Caerdydd
+Approved member since 2017

Services and skills

  • Bricklayer

    2 skills



  • Builder

    21 skills

    Basement / Cellar Conversions

    Brick / Concrete Structural Repairs


    Concrete Garages



    Extensions / Conversions

    Fire and Flood Renovation


    Garage Conversions

    Garden Studios

    General Building

    Insurance Claim Specialist

    Loft Conversions

    New Builds

    Partition Walls


    Repair and Listed Building Specialist

    Suspended Ceilings

    Wall Tie Replacements

    Workshop Design / Construction

  • Carpenter

    13 skills


    Barn Conversions

    Built In Furniture

    Cabinet Makers / Handmade Furniture

    Door Fitting / Hanging

    General Carpentry

    Handmade Kitchens Designed / Installed


    Log Cabins



    Truss Roofing

    Wooden / Timber Structures

  • Groundworks

  • Bathrooms

    6 skills

    Bathroom Designer

    Bathroom Fitter

    Bathroom Showroom

    Bathroom Supplier

    Disabled Bathrooms / Showers

    Wet Rooms

  • Bedrooms

    4 skills

    Bedroom Planner / Designer

    Bedroom Supplier / Installer

    Fitted Wardrobes

    Home Offices

  • Kitchens

    18 skills

    Accessible Kitchens

    Kitchen Appliance Supplier

    Kitchen Designers

    Kitchen Doors - Installation

    Kitchen Doors - Repair

    Kitchen Doors - Supply & Installation

    Kitchen Fitters - Installation

    Kitchen Fitters - Supply & Installation

    Kitchen Refurbishments

    Kitchen Showroom

    Kitchen Supplier

    Replacement Doors and Drawers


    Worktops - Acrylic

    Worktops - Granite

    Worktops - Laminate

    Worktops - Quartz

    Worktops - Solid Wood

  • Services

    4 services

    • Domestic Work
    • Commercial Work
    • Free Estimates
    • Insurance Work Undertaken


Customer reviews

Overall ratingin last 12 months

9Write a review
  • Workmanship9.00 out of 10
  • Tidiness9.00 out of 10
  • Reliability9.00 out of 10
  • Courtesy9.00 out of 10
Write a review

18 Total Reviews

The reviews below represent customers' views and not the views of Checkatrade

  • Extension and renovation

    9Verified Review

    Lewin and his team have been absolutely superb from start to finish. Professional, respectful and curteous from start to finish. We had almost lost hope when we got Lewin out to quote for us but he completely restored our faith and very quickly set to work on our extension which has be built to a high standard. Gareth and Matt are brilliant and we can’t thank them enough for all that they’ve done and for the patience they’ve had with us. We would 100% recommend this company.

    Location: CF5
  • All work related to building a first floor extension and garage conversion.

    7.75Verified Review

    Lewin employs some excellent tradespeople, but there was some lack of organisation and we felt that we were not fully informed about the planned work as the project progressed. There were long periods where no work was carried out and the overall project took far longer than originally quoted (10 months rather than 3). The work that has been carried out is excellent, but we needed to find other tradespeople to finish some of the work.

    Location: CF3
  • 2 storey extension with fitted kitchen

    9.5Verified Review

    The project had been started by another builder who let me down very badly, leaving the vast majority of the work to be completed. The situation was far from ideal but Lewin and his team really turned things around and did an excellent job. Progress was slower than planned but there were problems due to Covid restrictions. The people working on site always conducted themselves professionally and communication with Lewin was very good throughout.

    Location: NP20
  • Rear extension, rewiring, new bathroom and central heating under floor. Plastered to finish.

    10Verified Review

    Lewin and his team were excellent and the finish was superb. Polite, tidy and cannot fault their work. Definitely use again and highly recommend.

    Location: South Glamorgan
  • New kitchen diner and skylights.

    9.75Verified Review

    Excellent service and delighted with finished job. Lewin very accessible and everything done with great attention to detail. Real pride in workmanship and kept everything very tidy causing minimum disruption possible.

    Location: South Glamorgan
  • Full refurbishment and side extension

    10Verified Review

    Really pleased with the work carried out by lsj, we needed trustworthy builders as it was a bit job and that is just what we got. Lewin and the team were really friendly and polite and Lewin kept us up to date with progress via phone and text. People who have visited since the work has been completed have commented on how good it looks and also how clean and tidy the house was while the work was taking place. Lsj are very organised and professional and will do anything they can to help. We highly recommend! Thank you LSJ

    Location: West Glamorgan

Company profile

  • OwnerMr Lewin Steven Jones
  • Member Since2017
  • Public Liability InsuranceUnverified
  • AddressChecked
  • IdentityChecked
  • Checkatrade T&C'sSigned
  • VATNo
  • Company typeSole Trader

Company info

LSJ Building & Construction is a professional, affordable and reliable company based in Cardiff and the surrounding areas.

We guarantee you competent, efficient and punctual building services for any size of project.

We are rapidly growing and are happy to be able to say that we have a high percentage of repeat work from satisfied customers. We value our customers’ homes and business premises carrying out our work in a careful and respectful manner, minimising disruption.

We are highly experienced contractors and all of our work is carried out by competent persons to current regulations.

LSJ Building and Construction covers all aspects of building work including:

New Builds
Extensions and Loft Conversions
Kitchens and Bathrooms
Carpentry and Joinery
Driveways, Patios and Fencing
Foundations and Brickwork
Windows, Bi-Fold Doors, Conservatories, Guttering, Fascia's and Soffits
Plumbing and Heating
Painting & Decorating


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Contact details